Make sure that your rc.firewall allows auth (port 113). That is most likely causing your delay. On Mon, 2003-06-30 at 09:14, eNet wrote: > 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 > > -- -- Raymond Leach <raymondl@xxxxxxxxxxxxxxxxxxxxxx> Network Support Specialist http://www.knowledgefactory.co.za "lynx -source http://www.rchq.co.za/raymondl.asc | gpg --import" Key fingerprint = 7209 A695 9EE0 E971 A9AD 00EE 8757 EE47 F06F FB28 --
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