nginx开了80和88端口,80不能访问,88可以访问,求助下

siop

突然出现的奇怪问题,80的http服务不能访问,过一阵正常,过一阵又不能访问,22端口等别的端口都正常访问,所以在nginx上开了个88端口.

求助下,下面的tcpdump的信息

用一台服务器wget http://162.243.113.211, 一直在等待,用tcpdump看看

tcpdump port 80 and src 212.50.88.6
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
23:25:02.037315 IP 212.50.88.6.40351 > 162.243.113.211.www: Flags [S], seq 1600016611, win 14600, options [mss 1460,sackOK,TS val 844108629 ecr 0,nop,wscale 6], length 0
23:25:05.039388 IP 212.50.88.6.40351 > 162.243.113.211.www: Flags [S], seq 1600016611, win 14600, options [mss 1460,sackOK,TS val 844111632 ecr 0,nop,wscale 6], length 0
23:25:11.055170 IP 212.50.88.6.40351 > 162.243.113.211.www: Flags [S], seq 1600016611, win 14600, options [mss 1460,sackOK,TS val 844117648 ecr 0,nop,wscale 6], length 0
23:25:23.070661 IP 212.50.88.6.40351 > 162.243.113.211.www: Flags [S], seq 1600016611, win 14600, options [mss 1460,sackOK,TS val 844129664 ecr 0,nop,wscale 6], length 0
^C
4 packets captured
5 packets received by filter
0 packets dropped by kernel




然后wget http://162.243.113.211:88, 正常,用tcpdump看看

tcpdump port 88 and src 212.50.88.6
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
23:25:42.583071 IP 212.50.88.6.50513 > 162.243.113.211.kerberos: Flags [S], seq 2224084056, win 14600, options [mss 1460,sackOK,TS val 844149174 ecr 0,nop,wscale 6], length 0
23:25:42.759291 IP 212.50.88.6.50513 > 162.243.113.211.kerberos: Flags [.], ack 836088556, win 229, options [nop,nop,TS val 844149351 ecr 582098], length 0
23:25:42.759455 IP 212.50.88.6.50513 > 162.243.113.211.kerberos: Flags [P.], seq 0:106, ack 1, win 229, options [nop,nop,TS val 844149351 ecr 582098], length 106
23:25:42.935892 IP 212.50.88.6.50513 > 162.243.113.211.kerberos: Flags [.], ack 238, win 245, options [nop,nop,TS val 844149527 ecr 582142], length 0
23:25:42.935977 IP 212.50.88.6.50513 > 162.243.113.211.kerberos: Flags [.], ack 850, win 264, options [nop,nop,TS val 844149527 ecr 582142], length 0
23:25:43.028378 IP 212.50.88.6.50513 > 162.243.113.211.kerberos: Flags [F.], seq 106, ack 850, win 264, options [nop,nop,TS val 844149619 ecr 582142], length 0
23:25:43.204662 IP 212.50.88.6.50513 > 162.243.113.211.kerberos: Flags [.], ack 851, win 264, options [nop,nop,TS val 844149796 ecr 582209], length 0
^C
7 packets captured
8 packets received by filter
0 packets dropped by kernel