{"id":925,"date":"2015-12-29T13:08:39","date_gmt":"2015-12-29T13:08:39","guid":{"rendered":"http:\/\/haisins.epac.to\/wordpress\/?p=925"},"modified":"2015-12-29T13:08:39","modified_gmt":"2015-12-29T13:08:39","slug":"tcp-%ed%8c%8c%eb%9d%bc%eb%af%b8%ed%84%b0-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/haisins.synology.me\/wordpress\/?p=925","title":{"rendered":"TCP \ud30c\ub77c\ubbf8\ud130 \uc815\ub9ac"},"content":{"rendered":"


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tcp_deferred_ack_interval<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\uc694\uccad\ud558\ub294 \ud074\ub77c\uc774\uc5b8\ud2b8\uc640 \uc751\ub2f5\ud558\ub294 \uc11c\ubc84 \uc0ac\uc774\uc5d0\uc11c TCP ACK <\/SPAN><\/FONT>\uc2e0\ud638\ub97c \uc9c0\uc5f0\ud558\uae30 \uc704\ud55c \uc2dc\uac04\uc744 \uc124\uc815\ud558\ub294 \ud30c\ub77c\uba54\ud130<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
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TCP 3 handshake<\/FONT><\/SPAN>\uc5d0\uc11c \uc694\uccad \uc11c\ubc84<\/FONT> A<\/FONT><\/SPAN>\uc5d0\uc11c<\/FONT> SYN<\/FONT><\/SPAN>\uc744 \ubcf4\ub0b4\uba74 \uc11c\ube44\uc2a4 \ud558\ub294 \uc11c\ubc84\uc778<\/FONT> B<\/FONT><\/SPAN>\uc5d0\uc11c\ub294<\/FONT> SYN<\/FONT><\/SPAN>\uacfc<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubcf4\ub0b4\uac8c \ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ub2e4\uc2dc \uc11c\ubc84<\/FONT> A<\/FONT><\/SPAN>\ub294 \uc774\ub97c \ud655\uc778\ud55c \ud6c4<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubcf4\ub0b8 \ud6c4 \ub370\uc774\ud130\ub97c \uc804\uc1a1\ud55c\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
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ACK <\/FONT><\/SPAN>\uc9c0\uc5f0\uc740 \uc11c\ubc84<\/FONT> A<\/FONT><\/SPAN>\uc5d0\uc11c \uc11c\ubc84<\/FONT> B<\/FONT><\/SPAN>\ub85c \ub370\uc774\ud130\ub97c \ubcf4\ub0b4\uae30 \uc804\uc5d0<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubcf4\ub0b4\ub294 \uac83\uc744 \uc9c0\uc5f0\ud55c\ub2e4\ub294 \uac83\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc989<\/FONT>, <\/FONT><\/SPAN>\ub370\uc774\ud130\uc5d0 \ub300\ud55c<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubc14\ub85c \ubcf4\ub0b4\uc9c0 \uc54a\uace0 \uc0c1\ub300\ud3b8<\/FONT> TCP<\/FONT><\/SPAN>\ub85c \ubcf4\ub0bc \ub370\uc774\ud130\uac00 \uc788\uc744 \uacbd\uc6b0 \ub370\uc774\ud130\uc640 \ud568\uaed8<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubcf4\ub0bc \uc218 \uc788\ub3c4\ub85d \uc77c\uc815\uc2dc\uac04<\/FONT> ACK <\/FONT><\/SPAN>\uc804\uc1a1\uc744 \uc9c0\uc5f0\uc2dc\ud0a4\ub294 \uae30\ub2a5\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc2e4\uc2dc\uac04\uc73c\ub85c \uc870\ud68c\ud558\ub294 \ub370\uc774\ud130\ub77c\uba74 \uc774 \uac12\uc744 \uc870\uc808\ud558\uba74 \uc5b4\ub290 \uc815\ub3c4 \ud6a8\uacfc\ub97c \ubcfc \uc218 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc8fc\uc758\ud574\uc57c \ud560 \uac83\uc740 \uc774 \uac12\uc744<\/FONT> 500 millisecond(1\/1000 <\/FONT><\/SPAN>\ucd08<\/FONT>)<\/FONT><\/SPAN>\uc774\uc0c1\uc758 \uac12\uc740 \uc124\uc815\uc744 \ud558\uc9c0 \uc54a\ub294 \uac83\uc774 \uc88b\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uadf8 \uc774\uc720\ub294 \uc9c0\uc5f0 \uc2dc\uac04\uc744 \ub108\ubb34 \uae38\uac8c \uc904 \uacbd\uc6b0 \uc0c1\ub300\ubc29 \uce21\uc5d0\uc11c \ub370\uc774\ud130\ub97c \uc778\uc2dd\ud558\ub294\ub370 \uadf8 \ub9cc\ud07c \ub2a6\uc5b4 \uc9c8 \uc218 \uc788\ub2e4\ub294 \uac83\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774 \ud30c\ub77c\uba54\ud130\uc758 \uae30\ubcf8\uac12\uc740<\/FONT> 100 millisecond<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac00\uc6a9 \uac00\ub2a5\ud55c \uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1millisecond~1minute<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_deferred_acks_max<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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ACK <\/FONT><\/SPAN>\uc0dd\uc131\ub418\uae30 \uc804\uc5d0 \ub9ac\ubaa8\ud2b8\uc5d0 \uc218\uc2e0\ub418\ub294<\/FONT> TCP <\/FONT><\/SPAN>\uc138\uadf8\uba3c\ud2b8\uc758 <\/FONT>\ucd5c<\/st1:Sn>\ub300\uc218<\/st1:GivenName><\/st2:PersonName>(<\/SPAN><\/FONT>\uc774 \ucd5c\ub300 \uc138\uadf8\uba58\ud2b8\uc758 \ub2e8\uc704\ub294 \uac1c\ubcc4\uc801\uc778 \uc811\uc18d\uc5d0 \ub300\ud55c<\/FONT> MSS(Maximum Segment Size). <\/FONT><\/SPAN>\uc774 \uac12\uc774<\/FONT> 0 <\/FONT><\/SPAN>\ub610\ub294<\/FONT> 1<\/FONT><\/SPAN>\ub85c \uc124\uc815\ub418\uba74<\/FONT>, ACK<\/FONT><\/SPAN>\ub294 \uc9c0\uc5f0\ub418\uc9c0 \uc54a\uc73c\uba70<\/FONT>, <\/FONT><\/SPAN>\ubaa8\ub4e0 \uc138\uadf8\uba58\ud2b8\ub4e4\uc774<\/FONT> 1MSS <\/FONT><\/SPAN>\uae34 \uac83\uc73c\ub85c \ucd94\uce21\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 8<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 0 ~ 16<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_wscale_always<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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1<\/FONT><\/SPAN>\ub85c \uc124\uc815\ub418\uba74<\/FONT> TCP<\/FONT><\/SPAN>\ub294<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\uc5d0<\/FONT> window <\/FONT><\/SPAN>\uc2a4\ucf00\uc77c<\/FONT>(scale) <\/FONT><\/SPAN>\uc635\uc158\uc744 \ud56d\uc0c1 \uac19\uc774 \uc804\uc1a1\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\uac00<\/FONT> 0<\/FONT><\/SPAN>\uc73c\ub85c \uc124\uc815\ub418\uc5b4 \uc788\ub354\ub77c\ub3c4 \uc708\ub3c4\uc6b0 \ud06c\uae30\uac00 \uc635\uc158\uc73c\ub85c \uc124\uc815\ub41c<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\ub97c \uc218\uc2e0\ud558\uac8c \ub418\uba74<\/FONT> window scale<\/FONT><\/SPAN>\ub97c \uc635\uc158\uc73c\ub85c \ub123\uc740<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\ub97c \uc751\ub2f5\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12<\/FONT> 0(disabled)<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 0(disabled), 1(enabled)<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_tstamp_always<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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1<\/FONT><\/SPAN>\ub85c \uc124\uc815\ub418\uba74<\/FONT> TCP<\/FONT><\/SPAN>\ub294<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\uc5d0<\/FONT> timestamp <\/FONT><\/SPAN>\uc635\uc158\uc744 \ud56d\uc0c1 \uac19\uc774 \uc804\uc1a1\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\uac00<\/FONT> 0<\/FONT><\/SPAN>\uc73c\ub85c \uc124\uc815\ub418\uc5b4 \uc788\ub354\ub77c\ub3c4 \uc708\ub3c4\uc6b0 \ud06c\uae30\uac00 \uc635\uc158\uc73c\ub85c \uc124\uc815\ub41c<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\ub97c \uc218\uc2e0\ud558\uac8c \ub418\uba74<\/FONT> timestamp <\/FONT><\/SPAN>\uc635\uc158\uc73c\ub85c \ub123\uc740<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\ub97c \uc751\ub2f5\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 0(disabled)<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 0(disalbed), 1(enabled)<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_xmit_hiwat<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\ucd08\uae30 \uc1a1\uc2e0 \uc708\ub3c4\uc6b0 \ud06c\uae30\ub97c \uc124\uc815(byte<\/SPAN><\/FONT>\ub2e8\uc704<\/FONT>), <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 16384 byte<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 4096~1,073,741,824<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_xmit_lowat<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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select(3N) <\/FONT><\/SPAN>\ub610\ub294<\/FONT> poll(2) call<\/FONT><\/SPAN>\uc774 \uc5f0\uacb0\ub41c \ud30c\uc77c \uc9c0\uc2dc\uc790<\/FONT>(File description)<\/FONT><\/SPAN>\uc5d0 \ub300\ud574 \uae30\ub85d \uac00\ub2a5\ud55c \uac83\uc744 \ub9ac\ud134\ud560 \ub54c\uae4c\uc9c0<\/FONT> TCP <\/FONT><\/SPAN>\uc1a1\uc2e0 \ubc84\ud37c \ub0b4\uc5d0 \uc0ac\uc6a9 \uac00\ub2a5\ud574\uc57c\ub9cc \ud558\ub294 \ub370\uc774\ud130 \uc591\uc744 \uacb0\uc815\ud560 \ub54c \uc0ac\uc6a9\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774 \uac12\uc740 \ud29c\ub2dd\ud558\uc9c0 \uc54a\uace0 \uae30\ubcf8\uac12\uc744 \uc0ac\uc6a9\ud560 \uac83\uc744 \uad8c\uc7a5\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 4096<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_recv_hiwat<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\ucd08\uae30 \uc218\uc2e0 \uc708\ub3c4\uc6b0 \ud06c\uae30\ub97c \uc124\uc815(byte<\/SPAN><\/FONT>\ub2e8\uc704<\/FONT>), <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 24,576<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\ubcf4\ud1b5<\/FONT> 16K <\/FONT><\/SPAN>\uc774\uc0c1\uc744 \uc0ac\uc6a9\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 2,048~1,073,741,824<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_recv_hiwat_minmss<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\uc218\uc2e0 \uc708\ub3c4\uc6b0 \ud06c\uae30\uc758 \ucd5c\uc18c\uac12 \uc9c0\uc815\ud560 \ub54c \uc0ac\uc6a9(<\/SPAN><\/FONT>\ub2e8\uc704<\/FONT>:byte),<\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> __<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1~65,536<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_max_buf<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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TCP<\/FONT><\/SPAN>\ubc84\ud37c\uc758 \ucd5c\ub300 \ud06c\uae30\ub97c \uc124\uc815<\/FONT>(<\/FONT><\/SPAN>\ub2e8\uc704<\/FONT> byte) <\/FONT><\/SPAN>\uc989<\/FONT>, <\/FONT><\/SPAN>\uc1a1\uc218\uc2e0\ud558\ub294 \ubc84\ud37c \ud06c\uae30\ub97c \ud06c\uac8c \uc124\uc815\ud560 \uc218 \uc788\uc73c\uba70<\/FONT>, <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 1,048,576<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 8,192~1,073,741,824<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ubcf4\ud1b5 \ub124\ud2b8\uc6cc\ud06c\uc758 \uc18d\ub3c4\uac00 \ube68\ub77c\uc9c0\uba74 \uadf8\uac83\uc5d0 \ube44\ub840\ud558\uc5ec \uac12\uc744 \uc99d\uac00 \uc2dc\ucf1c\uc11c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc88b\ub2e4<\/FONT>. <\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_cwnd_max<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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TCP <\/FONT><\/SPAN>\uc815\uccb4 \uc708\ub3c4\uc6b0<\/FONT>(congestion window : cwnd)<\/FONT><\/SPAN>\uc758 \ucd5c\ub300\uac12\uc744 \uc124\uc815<\/FONT>(<\/FONT><\/SPAN>\ub2e8\uc704<\/FONT> : byte)<\/FONT><\/SPAN>\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 1,048,576<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 128~1,073,741,824<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_slow_start_initial<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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TCP <\/FONT><\/SPAN>\uc811\uc18d\uc758<\/FONT> MSS<\/FONT><\/SPAN>\uc5d0 \uc788\uc5b4\uc11c \ucd08\uae30<\/FONT> cwnd<\/FONT><\/SPAN>\uc758 \ucd5c\ub300 \uc218 \uae30\ubcf8\uac12\uc740<\/FONT> 4<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1~4<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_slow_start_after_idle<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\ud55c\ubc88 RTO(Retransmission timeout) <\/SPAN><\/FONT>\ub3d9\uc548<\/FONT> idle(<\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\ub97c \uc218\uc2e0\ud558\uc9c0 \uc54a\uc74c<\/FONT>) <\/FONT><\/SPAN>\uc0c1\ud0dc \ud6c4\uc5d0 \uc815\uccb4 \uc708\ub3c4\uc6b0\uc758 \ud06c\uae30\ub85c\uc11c<\/FONT>, <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 4<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1~16,384<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_sack_permitted<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\ub9cc\uc57d 2<\/SPAN><\/FONT>\ub85c \uc124\uc815\ub418\uba74<\/FONT>, TCP<\/FONT><\/SPAN>\ub294<\/FONT> SACK(selective acknowledgement) <\/FONT><\/SPAN>\ud5c8\uc6a9 \uc635\uc158\uc774 \ud3ec\ud568\ub41c<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\ub97c \uc804\uc1a1\ud55c\ub2e4<\/FONT>. 1<\/FONT><\/SPAN>\ub85c \uc124\uc815\ub418\uba74<\/FONT> TCP<\/FONT><\/SPAN>\ub294<\/FONT> SYN <\/FONT><\/SPAN>\uc138\uadf8\uba58\ud2b8\uc640 \ud568\uaed8<\/FONT> SACK-<\/FONT><\/SPAN>\ud5c8\uc6a9 \uc635\uc158\uc744 \uc218\uc2e0\ud558\uace0<\/FONT>, TCP<\/FONT><\/SPAN>\ub294<\/FONT> SACK <\/FONT><\/SPAN>\ud5c8\uc6a9 \uc635\uc158\uc73c\ub85c \uc751\ub2f5\ud55c\ub2e4<\/FONT>. 0<\/FONT><\/SPAN>\uc73c\ub85c \uc124\uc815\ub418\uba74<\/FONT>, <\/FONT><\/SPAN>\ub4e4\uc5b4\uc624\ub294 \uc138\uadf8\uba58\ud2b8\uc5d0<\/FONT> SACK <\/FONT><\/SPAN>\ud5c8\uc6a9 \uc635\uc158\uc744 \ub530\uc9c0\uc9c0 \uc54a\uace0 \ud3ec\ud568\ub418\uc9c0 \uc54a\ub294 \uac83\uc73c\ub85c \uac04\uc8fc\ud558\uc5ec<\/FONT>, TCP<\/FONT><\/SPAN>\ub294<\/FONT> SACK <\/FONT><\/SPAN>\ud5c8\uc6a9 \uc635\uc158\uc744 \ubcf4\ub0b4\uc9c0 \uc54a\ub294\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 2(active enabled)<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uc124\uc815\ud560 \uc218 \uc788\ub294 \uac12\uc740<\/FONT> 0(disabled), 1(enabled)m 2(active enabled)<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_rev_src_routes<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\uc774(<\/SPAN><\/FONT>\uae30\ubcf8<\/FONT>-disable)<\/FONT><\/SPAN>\uc774\uba74<\/FONT>, TCP<\/FONT><\/SPAN>\ub294 \ubcf4\uc548\uc0c1\uc758 \uc774\uc720\ub85c \uc778\ud558\uc5ec \ub4e4\uc5b4\uc624\ub294 \uc5f0\uacb0\uc5d0 \ub300\ud574<\/FONT> IP <\/FONT><\/SPAN>\uc18c\uc2a4 \ub77c\uc6b0\ud305 \uc635\uc158<\/FONT>(source routing option)<\/FONT><\/SPAN>\uc5d0 \uc608\uc57d\uc744 \ud558\uc9c0 \uc54a\ub294\ub2e4<\/FONT>. 1(enalbe)<\/FONT><\/SPAN>\ub85c \uc124\uc815\ub418\uba74<\/FONT>, TCP<\/FONT><\/SPAN>\ub294 \uc77c\ubc18\uc801\uc778 \uc18c\uc2a4 \ub77c\uc6b0\ud305\uc744 \uc608\uc57d\ud55c\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
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tcp_time_wait_interval<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
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\uc194\ub77c\ub9ac\uc2a4 2.6<\/SPAN><\/FONT>\uc774\uc804\uae4c\uc9c0\ub294<\/FONT> tcp_close_wait_interval <\/FONT><\/SPAN>\ub77c\ub294 \ud30c\ub77c\uba54\ud130\ub97c \uc0ac\uc6a9\ud558\uc600\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774 \ud30c\ub77c\uba54\ud130\ub294<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc774 \uc885\ub8cc \ub418\uc5c8\uc744 \ub54c<\/FONT>, TIME_WAIT <\/FONT><\/SPAN>\uc0c1\ud0dc\uc758<\/FONT> TCP <\/FONT><\/SPAN>\uc138\uc158\uc744 \uc77c\uc815 \uae30\uac04 \ub3d9\uc548 \uba54\ubaa8\ub9ac\uc5d0 \ub300\uae30 \uc0c1\ud0dc\ub85c \ub0a8\uc544\uc788\uac8c \ud55c\ub2e4<\/FONT>.  <\/SPAN><\/FONT><\/SPAN>\uadf8 \uc774\uc720\ub294<\/FONT> TCP <\/FONT><\/SPAN>\uc138\uc158\uc740 \ub04a\uc5b4\uc84c\uc9c0\ub9cc \ubc14\ub85c \uc7ac\uc811\uc18d\uc744 \ud558\ub824\uace0 \ud560 \ub54c\uc5d0\ub294 \uc5f0\uacb0\uc744 \uc704\ud55c \uc0c8\ub85c\uc6b4 \uc138\uc158\uc73c\ub85c \uc5f0\uacb0\uc774 \uc774\ub8e8\uc5b4\uc9c0\ub294 \uac83\uc774 \uc544\ub2c8\ub77c<\/FONT>, <\/FONT><\/SPAN>\uba54\ubaa8\ub9ac\uc5d0 \uc788\ub294 \uc138\uc158\uc758 \uc815\ubcf4\ub97c \uac00\uc9c0\uace0 \uc5f0\uacb0\uc774 \uc774\ub8e8\uc5b4\uc9c0\uae30 \ub54c\ubb38\uc5d0 \ube60\ub978 \uc5f0\uacb0\uc774 \uac00\ub2a5\ud574\uc9c4\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

tcp_time_wait_interval<\/FONT><\/SPAN>\uc740<\/FONT> TIME_WAIT <\/FONT><\/SPAN>\uc0c1\ud0dc\uc758 \uc885\ub8cc\ub41c<\/FONT> TCP <\/FONT><\/SPAN>\uc18c\ucf13\uc774 \uba54\ubaa8\ub9ac\uc5d0 \ub0a8\uc544 \uc788\ub294 \uc2dc\uac04\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\ud574\ub2f9 \uc2dc\uac04\uc774 \uc9c0\ub098\uc57c \uc18c\ucf13\uc740 \ub2e4\uc2dc \uc0ac\uc6a9\ub420 \uc218 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 240,000ms(4<\/FONT><\/SPAN>\ubd84<\/FONT>)<\/FONT><\/SPAN>\uc774\uc9c0\ub9cc<\/FONT>, <\/FONT><\/SPAN>\uc774\ub294<\/FONT> tcp <\/FONT><\/SPAN>\uc18c\ucf13\uc744 \ub9ce\uc774 \uc694\uad6c\ud558\ub294 \uc11c\ubc84<\/FONT>, <\/FONT><\/SPAN>\uc989 \uc6f9 \uc11c\ubc84\uc5d0\uc11c\ub294 \ub108\ubb34 \uae38\uac8c \uae30\ub2e4\ub9ac\uac8c \ud558\ub294 \uac83\uc740 \uba54\ubaa8\ub9ac \ub0ad\ube44\uc774\ubbc0\ub85c<\/FONT> 60,000ms(1<\/FONT><\/SPAN>\ubd84<\/FONT>) <\/FONT><\/SPAN>\uc815\ub3c4\uc758 \ud06c\uae30\ub85c \uc904\uc774\ub294 \uac83\uc774 \uc88b\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uadf8\ub9ac\uace0<\/FONT>, <\/FONT><\/SPAN>\ub9ce\uc740 \uc218\uc758<\/FONT> TIME_WAIT <\/FONT><\/SPAN>\uc18c\ucf13 \uc0c1\ud0dc\uac00 \uc720\uc9c0\ub418\uba74 \uba54\ubaa8\ub9ac \ub0ad\ube44\ubfd0\ub9cc \uc544\ub2c8\ub77c<\/FONT> CPU <\/FONT><\/SPAN>\uc7ac\uc6d0\uc774 \ub0ad\ube44\ub420 \uc218 \uc788\ub2e4<\/FONT>.(<\/FONT><\/SPAN>\ud050\uad00\ub9ac\ub54c\ubb38<\/FONT>), <\/FONT><\/SPAN>\uadf8\ub7ec\ub098 \uc678\ubd80 \uc11c\ube44\uc2a4 \ud658\uacbd\uc5d0\uc11c \uc774\ub97c \ub108\ubb34 \uc904\uc77c \uacbd\uc6b0<\/FONT>, <\/FONT><\/SPAN>\ucee4\ub125\uc158 \ud488\uc9c8 \uc790\uccb4\uac00 \ubd88\uc548\ud560 \uc218 \uc788\uc73c\ubbc0\ub85c \ub354 \uc774\uc0c1 \uc904\uc774\uc9c0 \uc54a\ub294 \uac83\uc774 \ubc14\ub78c\uc9c1\ud558\ub2e4<\/FONT>. LAN <\/FONT><\/SPAN>\ud658\uacbd\uc778 \uacbd\uc6b0<\/FONT>, 60,000ms<\/FONT><\/SPAN>\ubcf4\ub2e4 \uc801\uac8c \uc7a1\uc744 \uc218 \uc788\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

         <\/FONT><\/SPAN><\/FONT><\/SPAN><\/P>
\n

<\/P>
\n

<\/SPAN><\/FONT><\/SPAN> <\/P>
\n

<\/FONT><\/SPAN> <\/P>
\n

<\/FONT><\/SPAN>TCP <\/FONT><\/SPAN>\uc5f0\uacb0 \ub2e8\uacc4 \uc911<\/FONT> TIME_WAIT <\/FONT><\/SPAN>\ub2e8\uacc4\ub97c \uc720\uc9c0\ud558\ub294 \uc2dc\uac04<\/FONT>, <\/FONT><\/SPAN>\ub9c8\uc9c0\ub9c9<\/FONT> FIN<\/FONT><\/SPAN>\uc5d0 \ub300\ud55c<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubcf4\ub0b8 \ub4a4 \uc0c1\ub300\ubc29\uc774 \ud328\ud0b7\uc744 \uc218\uc2e0\ud588\ub294\uc9c0 \ud655\uc778 \ud560 \uc218 \uc5c6\uc73c\ubbc0\ub85c \uc774 \ud30c\ub77c\uba54\ud130\uc5d0 \uc124\uc815\ub41c \uc2dc\uac04\ub9cc\ud07c \uae30\ub2e4\ub838\ub2e4\uac00 \uc5f0\uacb0\uc744 \ub2eb\uac8c \ud55c\ub2e4<\/FONT>. close). <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 240000millisecond(4<\/FONT><\/SPAN>\ubd84<\/FONT>), <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1<\/FONT><\/SPAN>\ucd08<\/FONT>~10<\/FONT><\/SPAN>\ubd84\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_conn_req_max_q<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\uc774 \ud30c\ub77c\uba54\ud130\ub294 \uc644\uc804\ud55c \uc5f0\uacb0\uc744 \uc704\ud55c \ud050\uc758 \ud06c\uae30\ub97c \uc9c0\uc815\ud55c\ub2e4.<\/SPAN><\/FONT><\/FONT><\/P>
\n

Three-way handshake<\/FONT><\/SPAN>\uac00 \uc644\ub8cc\ub41c \uc5f0\uacb0\uc774 \uc811\uadfc\ub418\uae30\uae4c\uc9c0 \ub300\uae30\ud558\uace0 \uc788\ub294 \ud050\uc758 \ud06c\uae30\ub97c \ub098\ud0c0\ub0b8\ub2e4<\/FONT>. netstat <\/FONT><\/SPAN><\/FONT>\u2013<\/SPAN>s <\/FONT><\/SPAN>\u2013<\/SPAN>P tcp <\/FONT><\/SPAN><\/FONT>\uba85\ub839 \uacb0\uacfc\uac12 \uc911<\/FONT> tcpListenDropQ<\/FONT><\/SPAN>\uac00<\/FONT> 0<\/FONT><\/SPAN>\uc774\uc0c1 \uac12\uc744 \ubcf4\uc774\ub294 \uacbd\uc6b0<\/FONT>, <\/FONT><\/SPAN>\ud574\ub2f9 \ud050\ub85c \ub4e4\uc5b4\uac00\uc9c0 \ubabb\ud558\uace0<\/FONT> Drop <\/FONT><\/SPAN>\ub41c \uc5f0\uacb0\uc774 \uc788\uc74c\uc744 \ub098\ud0c0\ub0b4\ubbc0\ub85c<\/FONT> tcp_conn_req_max_q<\/FONT><\/SPAN>\uc758 \uac12\uc744 \uc99d\uac00\uc2dc\ud0ac \ud544\uc694\uac00 \uc788\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

\uc6f9 \uc11c\ubc84\uc640 \uac19\uc774 TCP <\/SPAN><\/FONT>\uc5f0\uacb0\uc774 \ub9ce\uc774 \uc0ac\uc6a9\ub418\ub294 \uc11c\ubc84\ud658\uacbd\uc5d0\uc11c \uac00\uc7a5 \ub9ce\uc774 \ud29c\ub2dd\ub418\ub294 \ud30c\ub77c\uba54\ud130\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 128<\/FONT><\/SPAN>\uc774\uace0 \uc99d\uac00 \uc2dc\ud0ac \ub54c\ub294 \ubcf4\ud1b5<\/FONT> tcp_conn_req_max_q0<\/FONT><\/SPAN>\uac12\uae4c\uc9c0 \uc99d\uac00\uc2dc\ud0a8\ub2e4<\/FONT>. accept()<\/FONT><\/SPAN>\uc5d0 \uc758\ud574 \ubc1b\uc544\ub4e4\uc5ec \uc9c0\uae30\ub97c \uae30\ub2e4\ub9ac\uba70 \ub300\uae30\ud558\uace0 \uc788\ub294<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc758 \ucd5c\ub300 \uac1c\uc218\ub77c \ud560 \uc218 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 128<\/FONT><\/SPAN>\uc774\uace0<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1 ~4,294,967,296<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_conn_req_max_q0<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\ud074\ub77c\uc774\uc5b8\ud2b8\uc640 \uc11c\ubc84 TCP<\/SPAN><\/FONT>\ub294 \ub370\uc774\ud130\ub97c \uc804\uc1a1\ud558\uae30 \uc804\uc5d0<\/FONT> Three-Way Handshake <\/FONT><\/SPAN>\uacfc\uc815\uc744 \ud1b5\ud574 \uac00\uc0c1 \ucee4\ub125\uc158\uc744 \uc0dd\uc131\ud558\uace0<\/FONT> Three-Way Handshake <\/FONT><\/SPAN>\uacfc\uc815\uc774 \uc644\ub8cc\ub418\uc5c8\uc744 \ub54c<\/FONT>, TCP<\/FONT><\/SPAN>\ub294<\/FONT> Established <\/FONT><\/SPAN>\uc0c1\ud0dc\ub97c \uac16\uac8c \ub41c\ub2e4<\/FONT>. Three-Way Handshake <\/FONT><\/SPAN>\uacfc\uc815 \uc911 \ud074\ub77c\uc774\uc5b8\ud2b8\ub85c\ubd80\ud130 \ub9c8\uc9c0\ub9c9<\/FONT> ACK<\/FONT><\/SPAN>\uac00 \uc624\uae30\ub97c \uae30\ub2e4\ub9ac\ub294<\/FONT> SYN_RCVD <\/FONT><\/SPAN>\uc0c1\ud0dc\uc758<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0 \uc0c1\ud0dc\ub97c \uac16\ub294\ub2e4\uace0 \ud55c\ub2e4<\/FONT>. tcp_conn_req_max_q0 <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\ub294 \ub9c8\uc9c0\ub9c9<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubc1b\uc9c0 \ubabb\ud55c \uc0c1\ud0dc\uc758<\/FONT> half-open <\/FONT><\/SPAN>\uc0c1\ud0dc\uc758 \ucee4\ub125\uc158\uc774 \ub300\uae30\ud558\ub294 \uc644\uc804\ud558\uc9c0 \ubabb\ud55c \uc5f0\uacb0 \ud050\uc758 \ud06c\uae30\ub97c \uc9c0\uc815\ud558\ub294<\/FONT> TCP <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

\uae30\ubcf8\uac12\uc740 1024<\/SPAN><\/FONT>\uc774\uba70<\/FONT>, netstat <\/FONT><\/SPAN><\/FONT>\u2013<\/SPAN>s <\/FONT><\/SPAN>\u2013<\/SPAN>P top <\/FONT><\/SPAN><\/FONT>\uba85\ub839 \uacb0\uacfc\uac12 \uc911<\/FONT> tcpListenDropQ0<\/FONT><\/SPAN>\uc640<\/FONT> tcpHalfOpenDrop <\/FONT><\/SPAN>\ub4f1\uc774<\/FONT> 0<\/FONT><\/SPAN>\uc774\uc0c1 \uac12\uc744 \ubcf4\uc774\ub294 \uacbd\uc6b0<\/FONT>, <\/FONT><\/SPAN>\ud574\ub2f9 \ud050\ub85c \ub4e4\uc5b4\uac00\uc9c0 \ubabb\ud558\uace0<\/FONT> Drop <\/FONT><\/SPAN>\ub41c \uc5f0\uacb0\uc774 \uc788\uc74c\uc744 \ub098\ud0c0\ub0b4\ubbc0\ub85c<\/FONT> tcp_conn_req_max_q0 <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\uc758 \uac12\uc744 \uc99d\uac00\uc2dc\ud0ac \ud544\uc694\uac00 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ub610\ud55c<\/FONT> SYN <\/FONT><\/SPAN>\ud50c\ub7ec\ub529<\/FONT>(flooding)<\/FONT><\/SPAN>\uc5d0 \ub300\ube44\ud558\uc5ec \ubcf4\ud638\ud558\uae30 \uc704\ud574 \ud574\ub2f9 \ud30c\ub77c\uba54\ud130\ub97c \uc99d\uac00\uc2dc\ud0ac \uc218 \uc788\ub2e4<\/FONT>. tcpHalfOpenDrop <\/FONT><\/SPAN>\uac12\uc774 \ubcf4\uc774\ub294 \uacbd\uc6b0<\/FONT> SYN flood<\/FONT><\/SPAN>\ub97c \uc758\uc2ec\ud574 \ubcfc \uc218 \uc788\ub2e4<\/FONT>. Three-way-handshake<\/FONT><\/SPAN>\uac00 \uc544\uc9c1 \uc644\ub8cc\ub418\uc9c0 \uc54a\uc544 \uae30\ub2e4\ub9ac\uace0 \uc788\ub294<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc758 \ucd5c\ub300 \uc218\ub97c \uc758\ubbf8\ud55c\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

\uae30\ubcf8\uac12\uc740 1024<\/SPAN><\/FONT>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 0~4,294,967,296<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_conn_req_min<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\ubc1b\uc544\ub4e4\uc5ec(accept)<\/SPAN><\/FONT>\uc9c0\uae30\ub97c \uae30\ub2e4\ub9ac\ub294 \ub9ac\uc2a4\ub108<\/FONT>(listener)<\/FONT><\/SPAN>\uc5d0 \ub300\ud574 \ud45c\ub958\uc911\uc778<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc758 \ucd5c\ub300 \uc218\uc5d0 \ub300\ud55c \uae30\ubcf8\uc801\uc778 \ucd5c\uc18c \uac12\uc744 \uc758\ubbf8\ud55c\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

\uae30\ubcf8\uac12\uc740 1<\/SPAN><\/FONT>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1~1024<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_conn_hash_size<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\ubaa8\ub4e0 TCP <\/SPAN><\/FONT>\uc5f0\uacb0\uc5d0 \ub300\ud574<\/FONT> TCP <\/FONT><\/SPAN>\ubaa8\ub4c8\uc5d0 \uc788\ub294 \ud574\uc2dc \ud14c\uc774\ube14 \ud06c\uae30\ub97c \uc870\uc808\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774 \ud14c\uc774\ube14\uc740<\/FONT> TCP <\/FONT><\/SPAN>\uc138\uc158\uc5d0 \ub300\ud55c \uac83\uc774\ub77c \ud560 \uc218 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774 \ud14c\uc774\ube14\uc740 \uc11c\ube44\uc2a4 \uc6a9\ub3c4\uc5d0 \ub530\ub77c \ucee4\uc9c8 \uc218\ub3c4 \uc788\uace0 \uc791\uc544 \uc9c8 \uc218\ub3c4 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ub9cc\uc57d<\/FONT>, <\/FONT><\/SPAN>\uc774 \ud14c\uc774\ube14\uc774 \ub108\ubb34 \ud06c\ub2e4\uba74<\/FONT> TCP<\/FONT><\/SPAN>\uc138\uc158\uc740 \uc774 \ud14c\uc774\ube14\uc5d0\uc11c \uac80\uc0c9<\/FONT>(search)<\/FONT><\/SPAN>\ud558\ub294\ub370 \ub9ce\uc740 \uc790\uc6d0\uc744 \ub0ad\ube44\ud560 \uc218 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uadf8\ub7ec\ub098<\/FONT>, <\/FONT><\/SPAN>\uc2dc\uc2a4\ud15c\uc758 \uc131\ub2a5 \ud5a5\uc0c1\uc5d0 \ub530\ub77c \uc11c\ube44\uc2a4\uc5d0 \ub530\ub978 \uc138\uc158\uc774 \uc99d\uac00\ud55c\ub2e4\uba74 \uc774 \ud14c\uc774\ube14\uc758 \ud06c\uae30\ub97c \ub298\ub824\uc8fc\uba74 \uc5b4\ub290 \uc815\ub3c4 \ud5a5\uc0c1\ub41c \uc11c\ube44\uc2a4\ub97c \uae30\ub300\ud560 \uc218\ub3c4 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774 \ud30c\ub77c\uba54\ud130\uc758 \uac12\uc740<\/FONT> 512<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 512~1,073,741,824<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.(<\/FONT><\/SPAN>\uc2dc\uc2a4\ud15c \ubd80\ud305\uacfc\uc815\uc5d0\uc11c \uc801\uc6a9<\/FONT>).<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

ipc_tcp_conn_hash_size<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\ud65c\ub3d9\uc911\uc778 \ubaa8\ub4e0 TCP <\/SPAN><\/FONT>\uc5f0\uacb0<\/FONT>(ESTABLISHED <\/FONT><\/SPAN>\uc0c1\ud0dc<\/FONT>)<\/FONT><\/SPAN>\uc5d0 \ub300\ud55c<\/FONT> IP<\/FONT><\/SPAN>\ubaa8\ub4c8\uc758 \ud574\uc2dc \ud14c\uc774\ube14\uc758 \ud06c\uae30\ub97c \uc81c\uc5b4\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 512<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 512~2,147,483,648<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.(<\/FONT><\/SPAN>\uc2dc\uc2a4\ud15c \ubd80\ud305\uacfc\uc815\uc5d0\uc11c \uc801\uc6a9<\/FONT>).<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_ip_abort_interval<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc5d0 \ub300\ud558\uc5ec \uc804\uccb4 \uc7ac\uc804\uc1a1 \ud0c0\uc784\uc544\uc6c3 \uae30\ubcf8 \uac12<\/FONT>(timeout value)<\/FONT><\/SPAN>\uc744 \uc124\uc815\ud55c\ub2e4<\/FONT>.(milliseconds <\/FONT><\/SPAN>\ub2e8\uc704<\/FONT>). <\/FONT><\/SPAN>\uc8fc\uc5b4\uc9c4<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc5d0 \ub300\ud558\uc5ec<\/FONT> TCP<\/FONT><\/SPAN>\uac00 \uc774 \ud30c\ub77c\uba54\ud130\uc5d0 \uc8fc\uc5b4\uc9c4 \uac12 \uac04\uaca9\uc73c\ub85c \uc7ac\uc804\uc1a1\uc744 \ud55c\ub2e4\uba74<\/FONT>, <\/FONT><\/SPAN>\uc8fc\uc5b4\uc9c4 \uc2dc\uac04 \uac04\uaca9\uc73c\ub85c<\/FONT> TCP<\/FONT><\/SPAN>\uac00 \uc5f0\uacb0\uc744 \ub05d\ub0b4\ub294 \ub3d9\uc548\uc5d0 \ub2e4\ub978 \uacf3\uc73c\ub85c\ubd80\ud130 \uc624\ub294<\/FONT> ACK<\/FONT><\/SPAN>\ub97c \ubc1b\uc9c0 \ubabb\ud560 \uac83\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc989<\/FONT>, TCP<\/FONT><\/SPAN>\uc5f0\uacb0<\/FONT>(Established <\/FONT><\/SPAN>\uc0c1\ud0dc<\/FONT>)<\/FONT><\/SPAN>\uc774<\/FONT> RESET <\/FONT><\/SPAN>\uc138\uadf8\uba3c\ud2b8\ub97c \ubcf4\ub0b4\uae30 \uc804\uc5d0 \uc124\uc815\ud558\ub294 \uc7ac\uc804\uc1a1 \ud558\ub294 \ucd5c\ub300 \uc2dc\uac04\uc774\ub77c \ud560 \uc218 \uc788\ub2e4<\/FONT>. RTO(TCP retransmission timeout)<\/FONT><\/SPAN>\ub294<\/FONT> tcp_rexmit_interval_max<\/FONT><\/SPAN>\ub85c\uc11c \uacc4\uc0b0\uc774 \ub418\ubbc0\ub85c<\/FONT>, <\/FONT><\/SPAN>\uc784\uc758\uc801\uc73c\ub85c \ubcc0\uacbd\uc744 \ud558\uc9c0 \uc54a\ub294\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 8<\/FONT><\/SPAN>\ubd84<\/FONT>(480000millisecond)<\/FONT><\/SPAN>\uc774\uba74 \uac12\uc758 \ubc94\uc704\ub294<\/FONT> 500millisecond <\/FONT><\/SPAN>\uc5d0\uc11c<\/FONT> 1193hours<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_ip_abort_cinterval<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\uc5f0\uacb0\uc744 \ub9fa\uae30 \uc704\ud55c Three-way Handshake <\/SPAN><\/FONT>\ud504\ub85c\uc138\uc2a4\uac00 \uc774 \ud30c\ub77c\uba54\ud130\uc5d0 \uc8fc\uc5b4\uc9c4 \uc2dc\uac04 \ub3d9\uc548 \uc644\ub8cc\ub418\uc9c0 \uc54a\uc73c\uba74<\/FONT> RESET <\/FONT><\/SPAN>\uc138\uadf8\uba3c\ud2b8\uac00 \ubcf4\ub0b4\uc9c4\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ube60\ub978 \ub124\ud2b8\uc6cc\ud06c\uc5d0\uc120<\/FONT> SYN flood <\/FONT><\/SPAN>\uacf5\uaca9\uc744 \ud53c\ud558\uae30 \uc704\ud574<\/FONT> 10000ms <\/FONT><\/SPAN>\uc774\ud558\uc758 \uac12\uc744 \uc124\uc815\ud560 \uc218 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 180000millisecond <\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

         <\/FONT><\/SPAN><\/FONT><\/SPAN><\/P>
\n

<\/P><\/TD><\/TR>
\n


\n

tcp_rexmit_interval_initial<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc744 \uc704\ud55c<\/FONT> RTO(Retransmission Timeout) <\/FONT><\/SPAN>\uae30\ubcf8 \uac12\uc744 \uc124\uc815\ud55c\ub2e4<\/FONT>. TCP <\/FONT><\/SPAN>\ub370\uc774\ud130\uac00 \uc804\uc1a1\ub41c \ud6c4<\/FONT>, tcp_rexmit_interval_initial <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\uc5d0\uc11c \uc815\uc758\ud55c \uc2dc\uac04 \ub3d9\uc548 \uc751\ub2f5 \ud328\ud0b7\uc744 \ubc1b\uc9c0 \ubabb\ud558\ub294 \uacbd\uc6b0<\/FONT>, <\/FONT><\/SPAN>\uccab \ubc88\uc9f8 \uc7ac\uc804\uc1a1\uc774 \uc774\ub8e8\uc5b4\uc9c4\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc11c\ubc84\uc640 \ud074\ub77c\uc774\uc5b8\ud2b8\uac00 \ub3d9\uc77c<\/FONT> LAN<\/FONT><\/SPAN>\uc5d0 \uc704\uce58\ud558\ub294 \uacbd\uc6b0<\/FONT> 500ms <\/FONT><\/SPAN>\uc774\ud558\uc758 \uc2dc\uac04\uc744 \uc9c0\uc815\ud560 \uc218 \uc788\uc73c\uba70<\/FONT>, <\/FONT><\/SPAN>\uc678\ubd80\uc801\uc778 \ud658\uacbd \uc11c\ubc84\uc778 \uacbd\uc6b0<\/FONT> 2000ms <\/FONT><\/SPAN>\uc774\uc0c1\uc744 \uad8c\uc7a5\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 3<\/FONT><\/SPAN>\ucd08<\/FONT>(3000milliseconds)<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 500millisecond ~ 1193 hours<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

<\/FONT> <\/P>
\n

<\/P><\/TD><\/TR>
\n


\n

tcp_rexmit_interval_max<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\uc7ac\uc804\uc1a1 \uac04\uaca9 \uc911 \uc9c0\uc218 \ubc31\uc624\ud504 \uc54c\uace0\ub9ac\uc998(Exponential backoff algorithm)<\/SPAN><\/FONT>\uc744 \uc704\ud574 \uc0ac\uc6a9\ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc989<\/FONT> tcp_rexmit_interval_max<\/FONT><\/SPAN>\ub294 \ub450 \uac1c\uc758 \uc7ac\uc804\uc1a1 \uc0ac\uc774\uc5d0 \ucd5c\ub300 \ud5c8\uc6a9\ub41c<\/FONT> wait <\/FONT><\/SPAN>\uc2dc\uac04\uc744 \ub098\ud0c0\ub0b8\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

\uc7ac\uc804\uc1a1 \uc0ac\uc774\uc758 \ucd5c\ub300 wait <\/SPAN><\/FONT>\uc778\ud130\ubc8c\uc744 \uac00\ub9ac\ud0a4\ub294 \ud574\ub2f9 \ud30c\ub77c\ubbf8\ud130\ub294<\/FONT> tcp_ip_abort_interval<\/FONT><\/SPAN>\ubcf4\ub2e4 \uc791\uc544\uc57c \ud55c\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

RFC1122 <\/FONT><\/SPAN>\ubb38\uc11c\uc5d0\uc11c \uad8c\uc7a5\ud558\ub294 \uac12\uc740<\/FONT> 240000ms <\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uacbd\uc6b0\uc5d0 \ub530\ub77c<\/FONT> tcp_time_wait_interval<\/FONT><\/SPAN>\uc758<\/FONT> 1~2<\/FONT><\/SPAN>\ubc30 \uc815\ub3c4\uc758 \uac12\uc744 \uc124\uc815\ud558\ub3c4\ub85d \uad8c\uc7a5\ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 6<\/FONT><\/SPAN>\ucd08<\/FONT>(60000 millisecond)<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1millisecond ~ 20 seconde<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_rexmit_interval_min<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\uccab\ubc88\uc9f8 \uc7ac\uc804\uc1a1 \ud6c4, <\/SPAN><\/FONT>\ub4a4\ub530\ub974\ub294 \uc7ac\uc804\uc1a1\uc740<\/FONT> tcp_rexmit_interval_min <\/FONT><\/SPAN>\uc774\ud6c4 \uc2dc\uc791\ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 400millisecond<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\uac12\uc758 \ubc94\uc704\ub294<\/FONT> 1 millisecond~20seconds<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_smallest_nonpriv_port<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc9c0\uc815\ub41c \ud3ec\ud2b8 \uc774\uc678\uc5d0 \uc0ac\uc6a9\uc790\uac00 \uc0ac\uc6a9\ud558\ub294 \ud3ec\ud2b8\uc758 \uc2dc\uc791 \uac12\uc744 \uc124\uc815\ud55c\ub2e4. <\/SPAN><\/FONT>\uae30\ubcf8\uac12\uc740<\/FONT> 1024<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc989<\/FONT>, 1024<\/FONT><\/SPAN>\ud3ec\ud2b8 \uc774\uc804\uae4c\uc9c0\ub294 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 \ud3ec\ud2b8 \ubc88\ud638\ub77c \ud560 \uc218 \uc788\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_smallest_anon_port<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

TCP<\/FONT><\/SPAN>\uc640<\/FONT> UDP<\/FONT><\/SPAN>\uc5d0 \uc758\ud574 \uc0ac\uc6a9\ub418\ub294 \ud3ec\ud2b8 \ubc88\ud638<\/FONT>(port number)<\/FONT><\/SPAN>\ub294<\/FONT> unsigned 16<\/FONT><\/SPAN>\ube44\ud2b8<\/FONT> short<\/FONT><\/SPAN>\ub85c<\/FONT> 0~65535<\/FONT><\/SPAN>\uae4c\uc9c0\uc758 \ubc94\uc704\ub97c \uac16\ub294\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

\uc774\uc911 NIC<\/SPAN><\/FONT>\uc640 \uac19\uc740 \uae30\uad00\uc5d0 \ub4f1\ub85d\ub41c \ud2b9\uc815\ud55c \uc11c\ube44\uc2a4\ub97c \uc704\ud55c<\/FONT> port<\/FONT><\/SPAN>\ub85c<\/FONT> 0~1023<\/FONT><\/SPAN>\uac00 \ubbf8\ub9ac \uc608\uc57d\ub418\uc5b4 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774\ub7ec\ud55c \ud3ec\ud2b8\ub97c \uac00\ub9ac\ucf1c<\/FONT> Well-Known <\/FONT><\/SPAN>\ud3ec\ud2b8\ub77c\uace0 \ud55c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc77c\ubc18\uc801\uc778 \ud074\ub77c\uc774\uc5b8\ud2b8 \ud504\ub85c\uc138\uc2a4\ub4e4\uc740 \uc2dc\uc791\ub420 \ub54c<\/FONT>, OS<\/FONT><\/SPAN>\ub85c\ubd80\ud130 \uc784\uc758\uc758 \ud3ec\ud2b8\ub97c \ud560\ub2f9 \ubc1b\uc73c\uba70<\/FONT>, <\/FONT><\/SPAN>\ud3ec\ud2b8 \ubc88\ud638\ub294<\/FONT> tcp_smallest_anon_port <\/FONT><\/SPAN>\ud30c\ub77c\ubbf8\ud130\uc5d0 \uc124\uc815\ub41c \uac12 \uc774\uc0c1\uc744 \uac16\uac8c \ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ud074\ub77c\uc774\uc5b8\ud2b8 \ud504\ub85c\uc138\uc2a4\uc5d0\uac8c \ud560\ub2f9\ud574\uc904 \ud3ec\ud2b8 \ubc88\ud638\uac00 \ubd80\uc871\ud560 \uc218 \uc788\ub294 \ub9e4\uc6b0 \ubc14\uc05c<\/FONT>(busy)<\/FONT><\/SPAN>\uc2dc\uc2a4\ud15c \ud658\uacbd\uc5d0\uc120 \ud574\ub2f9 \ud30c\ub77c\ubbf8\ud130\uc758 \uac12\uc744<\/FONT> 8192<\/FONT><\/SPAN>\ub85c \uc124\uc815\ud574 \uc904 \uc218 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8\uac12\uc740<\/FONT> 32768<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_keepalive_interval<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\ub9ce\uc740 TCP <\/SPAN><\/FONT>\uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \uc0b4\uc544 \uc788\ub294<\/FONT>(keep alive)<\/FONT><\/SPAN>\uae30\ub2a5\uc744<\/FONT> off<\/FONT><\/SPAN>\uc2dc\ucf1c \ub193\uace0 \uc788\uc73c\uba70<\/FONT>, <\/FONT><\/SPAN>\uc77c\ubd80 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\ub9cc\uc774 \uc0b4\uc544 \uc788\ub294 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uace0 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ud574\ub2f9 \ud30c\ub77c\ubbf8\ud130\ub294 \uc0b4\uc544 \uc788\ub294 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\ub294 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc704\ud574 \uc0ac\uc6a9\ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\ud574\ub2f9 \uc2dc\uac04 \uac04\uaca9\uc73c\ub85c <\/FONT><\/FONT>\u201c<\/SPAN>keep-alive probe<\/FONT><\/SPAN>\u201d<\/SPAN> <\/FONT><\/SPAN><\/FONT>\ub97c \ubcf4\ub0b4\uc5b4<\/FONT> TCP<\/FONT><\/SPAN>\uc5f0\uacb0 \uc0c1\ud0dc\ub97c \uccb4\ud06c\ud558\uac8c \ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774 \uae30\ub2a5\uc758 \uc0ac\uc6a9\uc5ec\ubd80\ub294 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc758\ud574 \uacb0\uc815\ub418\uba70<\/FONT>, <\/FONT><\/SPAN>\ub9ce\uc740 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \uae30\ubcf8\uc801\uc73c\ub85c <\/FONT><\/FONT>\u201c<\/SPAN>keep-alive-probe<\/FONT><\/SPAN>\u201d<\/SPAN><\/FONT>\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uace0 \uc788\ub2e4<\/FONT>. HTTP\/1.0<\/FONT><\/SPAN>\uc774\ud6c4<\/FONT> Keep-alive <\/FONT><\/SPAN>\uae30\ub2a5\uc774 \uc0ac\uc6a9\ub418\uace0 \uc788\uc73c\uba70<\/FONT>, Keep-alive time<\/FONT><\/SPAN>\uc774 \ub9cc\ub8cc\ub418\uc9c0 \uc54a\uc558\ub2e4\uba74<\/FONT>, <\/FONT><\/SPAN>\ud574\ub2f9<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc744 \ud1b5\ud574 \uc5ec\ub7ec \uac1c\uc758<\/FONT> requests <\/FONT><\/SPAN>\ub97c \ucc98\ub9ac\ud55c\ub2e4<\/FONT>. HTTP <\/FONT><\/SPAN>\ub294<\/FONT> Keep-alive timer<\/FONT><\/SPAN>\ub97c \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158 \ub808\ubca8\uc5d0\uc11c \uc815\uc758\ud558\uc5ec \uc0ac\uc6a9\ud558\uace0 \uc788\ub2e4<\/FONT>. TCP<\/FONT><\/SPAN>\uc5d0\uc11c \uc81c\uacf5\ud558\ub294<\/FONT> tcp_keepalive_interval <\/FONT><\/SPAN>\ud30c\ub77c\ubbf8\ud130\uc758 \uae30\ubcf8\uac12\uc740<\/FONT> 7200000(2<\/FONT><\/SPAN>\uc2dc\uac04<\/FONT>)ms<\/FONT><\/SPAN>\uc774\uba70<\/FONT>, <\/FONT><\/SPAN>\ucd5c\uc18c<\/FONT> 10000ms<\/FONT><\/SPAN>\uae4c\uc9c0 \uc9c0\uc815 \uac00\ub2a5\ud558\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P><\/TD><\/TR>
\n


\n

tcp_fin_wait_2_flush_interval<\/FONT><\/FONT><\/SPAN><\/P><\/TD>
\n


\n

\uc11c\ubc84\uac00 TCP <\/SPAN><\/FONT>\uc5f0\uacb0\uc744 \ub04a\ub294 \uc694\uccad\uc744 \ubc1b\uc544 \ub4e4\uc77c \ub54c<\/FONT>, FIN <\/FONT><\/SPAN>\ube44\ud2b8\uac00 \uc124\uc815\ub41c \ud328\ud0b7\uc744 \ud074\ub77c\uc774\uc5b8\ud2b8\uc5d0\uac8c \ubcf4\ub0b4\uace0<\/FONT>, <\/FONT><\/SPAN>\ud074\ub77c\uc774\uc5b8\ud2b8\ub294 \uc774\uc5d0 \uc751\ub300\ud558\uc5ec<\/FONT> ACK <\/FONT><\/SPAN>\ube44\ud2b8\uac00 \uc124\uc815\ub41c \ud328\ud0b7\uc744 \uc11c\ubc84\uc5d0\uac8c \ubcf4\ub0b8\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uadf8\ub9ac\uace0<\/FONT>, <\/FONT><\/SPAN>\ud074\ub77c\uc774\uc5b8\ud2b8\ub294<\/FONT> FIN<\/FONT><\/SPAN>\ube44\ud2b8\uac00 \uc124\uc815\ub41c \ube44\ud2b8\ub97c \uc11c\ubc84\uc5d0\uac8c \ubcf4\ub0b8\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc11c\ubc84\ub294 \uc774\uc5d0 \ub300\ud558\uc5ec<\/FONT> ACK <\/FONT><\/SPAN>\uc124\uc815\ub41c \ud328\ud0b7\uc73c\ub85c \uc751\ub300\ub97c \ud568\uc73c\ub85c\uc368 \uc5f0\uacb0\uc774 \ub04a\uc5b4\uc9c4\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uc774\ub54c<\/FONT>, <\/FONT><\/SPAN>\uc11c\ubc84\uac00 \ud074\ub77c\uc774\uc5b8\ud2b8\ub85c\ubd80\ud130<\/FONT> ACK<\/FONT><\/SPAN>\ud328\ud0b7\uc744 \ubc1b\uace0<\/FONT>, <\/FONT><\/SPAN>\uc5f0\uacb0\uc774 \ub04a\uc5b4\uc9c0\uae30 \uc774\uc804\uc5d0<\/FONT> FIN <\/FONT><\/SPAN>\ube44\ud2b8\ub85c \uc124\uc815\ub41c \ud328\ud0b7\uc744 \uae30\ub2e4\ub9ac\ub294 \uc0c1\ud0dc\ub97c<\/FONT> FIN_WAIT_2 <\/FONT><\/SPAN>\uc0c1\ud0dc\ub77c \ud55c\ub2e4<\/FONT>(<\/FONT><\/SPAN>\uc704<\/FONT> TCP connection termination <\/FONT><\/SPAN>\uacfc\uc815 \uadf8\ub9bc \ucc38\uc870<\/FONT>). HTTP\/1.0 compliant Web <\/FONT><\/SPAN>\uc11c\ubc84\uc640<\/FONT> Proxies <\/FONT><\/SPAN>\uc740 \uac01 \ud2b8\ub79c\uc7ad\uc158 \ud6c4<\/FONT>, <\/FONT><\/SPAN>\uc11c\ubc84\ub2e8\uc5d0\uc11c \uc8fc\ub3c4\uc801\uc73c\ub85c<\/FONT> Connection<\/FONT><\/SPAN>\uc744 \uc885\ub8cc\ud558\uac8c \ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN><\/FONT><\/P>
\n

         <\/FONT><\/SPAN><\/FONT><\/SPAN><\/P>
\n

<\/P>
\n

<\/SPAN><\/FONT><\/SPAN><\/P>
\n

<\/v:stroke><\/v:line>tcp_fin_wait_2_flush_interval <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\ub294 \uc2dc\uc2a4\ud15c\uc774<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc744 \uc601\uc6d0\ud788<\/FONT> FIN_WAIT_2 <\/FONT><\/SPAN>\uc0c1\ud0dc\uc5d0 \uc788\ub294 \uac83\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \uc0ac\uc6a9\ub41c\ub2e4<\/FONT>.  <\/SPAN><\/FONT><\/SPAN><\/FONT><\/P>
\n

\uc0c1\ub300\ud3b8\uc73c\ub85c\ubd80\ud130 \ub9c8\uc9c0\ub9c9 FIN<\/SPAN><\/FONT>\uc774 \uc624\uc9c0 \uc54a\ub294 \uacbd\uc6b0<\/FONT>, FIN_WAIT_2<\/FONT><\/SPAN>\uc0c1\ud0dc\uc758<\/FONT> TCP <\/FONT><\/SPAN>\uc5f0\uacb0\uc740<\/FONT> tcp_fin_wait_2_flush_interval <\/FONT><\/SPAN>\ud30c\ub77c\uba54\ud130\uc5d0 \uc815\uc758\ub41c \uc2dc\uac04 \uc774\ud6c4<\/FONT>,FIN_WAIT_2<\/FONT><\/SPAN>\uc0c1\ud0dc\ub294<\/FONT> TIME_WAIT <\/FONT><\/SPAN>\uc0c1\ud0dc\ub85c \ubcc0\ud658\ub41c\ub2e4<\/FONT>. <\/FONT><\/SPAN>\uae30\ubcf8 \uac12\uacfc \uad8c\uc7a5 \uac12\uc740<\/FONT> 675000millisecond<\/FONT><\/SPAN>\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN><\/FONT>\u201c<\/SPAN>netstat <\/FONT><\/SPAN>\u2013<\/SPAN>f inet:<\/FONT><\/SPAN>\u201d<\/SPAN> <\/FONT><\/SPAN><\/FONT>\uba85\ub839\uc5b4 \uacb0\uacfc\uc5d0\uc11c<\/FONT> FIN_WAIT_2 <\/FONT><\/SPAN>\uc0c1\ud0dc\uc5d0 \uc788\ub294 \ub9ce\uc740 \uc5f0\uacb0\uc774 \ubcf4\uc774\ub294 \uacbd\uc6b0 \uac04\uaca9\uc744 \uc904\uc77c \ud544\uc694\uac00 \uc788\ub2e4<\/FONT>. <\/FONT><\/SPAN><\/FONT><\/P>
\n

\uc0c1\ub300\ud3b8\uc73c\ub85c\ubd80\ud130 \ub9c8\uc9c0\ub9c9 FIN <\/SPAN><\/FONT>\ud328\ud0b7\uc774 \uc62c \ub54c\uae4c\uc9c0\uc758<\/FONT> TCP <\/FONT><\/SPAN>\uc0c1\ud0dc\ub97c<\/FONT> Half close <\/FONT><\/SPAN>\uc0c1\ud0dc\ub85c \ud45c\ud604\ud55c\ub2e4<\/FONT>. Half-close <\/FONT><\/SPAN>\uc0c1\ud0dc\uc5d0\uc120 \uc0c1\ub300\ud3b8\uc774 \ubcf4\ub0b8 \ub370\uc774\ud130\ub97c \uc5ec\uc804\ud788 \ubc1b\uc744 \uc218 \uc788\ub294 \uc0c1\ud0dc\uc774\ub2e4<\/FONT>. <\/FONT><\/SPAN><\/FONT><\/P>
\n

tcp_fin_wait_2_flush_interval<\/FONT><\/SPAN>\uc758 \uac12\uc744 \ub108\ubb34 \uc791\uac8c \uc7a1\ub294 \uacbd\uc6b0<\/FONT> Half-close <\/FONT><\/SPAN>\uc0c1\ud0dc\uc758 \uc8fc\uae30\uac00 \ub108\ubb34 \uc9e7\uae30 \ub54c\ubb38\uc5d0 \uc0c1\ub300\ud3b8\uc774 \ubcf4\ub0b8 \ub370\uc774\ud130\ub97c \ucc98\ub9ac \ubabb\ud560 \uc218\ub3c4 \uc788\uc73c\ubbc0\ub85c \uc8fc\uc758\ud560 \ud544\uc694\uac00 \uc788\ub2e4<\/FONT>.<\/FONT><\/SPAN><\/FONT><\/P>
\n

#netstat <\/FONT><\/SPAN>\u2013<\/SPAN>na |grep FIN_WAIT |wc -|<\/FONT><\/SPAN><\/FONT><\/P>
\n

\uc774 \uacb0\uacfc \uc218\uce58\uac00 \ub9ce\uc774 \ub098\uc62c \ub54c\uc5d0\ub294 \uc2dc\uc2a4\ud15c\uc5d0 \ub9ce\uc740 \ubd80\ud558\ub97c \uc8fc\uc5b4 \uc0c8\ub85c\uc6b4 \uc5f0\uacb0\uc774\ub098 \uae30\uc874 \uc5f0\uacb0 \uc138\uc158\uc5d0 \ub300\ud574 \ub370\uc774\ud130 \uc804\uc1a1\uc774 \ub290\ub9b4 \uc218 \uc788\uc73c\ubbc0\ub85c \uc774 \ud30c\ub77c\uba54\ud130\uc758 \uac12\uc744 \uc904\uc778\ub2e4. <\/SPAN><\/FONT><\/FONT><\/P><\/TD><\/TR><\/TBODY><\/TABLE><\/P><\/p>\n","protected":false},"excerpt":{"rendered":"

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