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Hello List,
I am new in iptables and list.
I have problem when my dialup clients trying to
check their emails. There is a delay because of iptables. On that box I use
linux kernel 2.4.19 and rc.firewall
Here are more details of what is
happening:
Case 1. without iptables . It is OK. No delay. 19:45:51.756818 arp who-has xxx.xxx.xxx.1 tell xxx.xxx.xxx.129 19:45:51.756837 arp reply xxx.xxx.xxx.1 is-at yy:yy:yy:yy:yy 19:45:51.756920 xxx.xxx.xxx.129.2814 > NS1.enet.org.al.pop3: S 1490445489:1490445489(0) win 16384 <mss 1460,nop,nop,sackOK> (DF) 19:45:51.756988 NS1.enet.org.al.pop3 > xxx.xxx.xxx.129.2814: S 401842756:401842756(0) ack 1490445490 win 5840 <mss 1460,nop,nop,sackOK> (DF) 19:45:51.757102 xxx.xxx.xxx.129.2814 > NS1.enet.org.al.pop3: . ack 1 win 17520 (DF) 19:45:51.761677 xxx.xxx.xxx.1.48021 > xxx.xxx.xxx.129.auth: S 387191140:387191140(0) win 5840 <mss 1460,sackOK,timestamp 251690774 0,nop,wscale 0> (DF) 19:45:51.761856 xxx.xxx.xxx.129.auth > xxx.xxx.xxx.1.48021: R 0:0(0) ack 387191141 win 0 etc...
Case 2. iptables activated. Problem: delay 20:00:43.670848 xxx.xxx.xxx.129.2824 > NS1.enet.org.al.pop3: S 1713847144:1713847144(0) win 16384 <mss 1460,nop,nop,sackOK> (DF) 20:00:43.670903 NS1.enet.org.al.pop3 > xxx.xxx.xxx.129.2824: S 1342878817:1342878817(0) ack 1713847145 win 5840 <mss 1460,nop,nop,sackOK> (DF) 20:00:43.671015 xxx.xxx.xxx.129.2824 > NS1.enet.org.al.pop3: . ack 1 win 17520 (DF) 20:00:43.672185 xxx.xxx.xxx.1.48326 > xxx.xxx.xxx.129.auth: S 1340299399:1340299399(0) win 5840 <mss 1460,sackOK,timestamp 251779965 0,nop,wscale 0> (DF) now it goes around (!!!!!??)
20:00:43.672291 xxx.xxx.xxx.129.auth >
xxx.xxx.xxx.1.48326: R 0:0(0) ack 1340299400 win 0
20:00:46.666594 xxx.xxx.xxx.1.48326 > xxx.xxx.xxx.129.auth: S 1340299399:1340299399(0) win 5840 <mss 1460,sackOK,timestamp 251780265 0,nop,wscale 0> (DF) 20:00:46.666744 192.168.1.129.auth > xxx.xxx.xxx.1.48326: R 0:0(0) ack 1 win 0 20:00:52.666607 192.168.1.1.48326 > xxx.xxx.xxx.129.auth: S 1340299399:1340299399(0) win 5840 <mss 1460,sackOK,timestamp 251780865 0,nop,wscale 0> (DF) 20:00:52.666754 xxx.xxx.xxx.129.auth > xxx.xxx.xxx.1.48326: R 0:0(0) ack 1 win 0 untill here:
20:01:04.666637 xxx.xxx.xxx.1.48326 >
xxx.xxx.xxx.129.auth: S 1340299399:1340299399(0) win 5840 <mss
1460,sackOK,timestamp 251782065
0,nop,wscale 0> (DF) etc....
Any help appreciated.
Tani
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