At 9:31 AM -0600 11/1/07, Steve Lindemann wrote: >This, strictly speaking, isn't a Fedora problem, but I'm hoping someone >out there can help. > >system config: >dell poweredge 2950 >kernel: 2.6.22.9-61.fc6 >apache: 2.2.6 > >problem summary: when iptables is turned on, web pages (graphics in >particular) served up from the box are *extremely* slow to load, >sometimes timing out. when iptables is turned off, web pages served up >from the box load normally. I've compared my /etc/sysconfig/iptables >file to another (fc6) server and they are effectively the same, *but* >I've never had a problem with page loads from the other box. > >I'm assuming (yes, I know 8^) that the problem lies with iptables, but >I'm running out of places to look for answers. Should I be looking >somewhere other than the firewall? Has anyone else seen this? I'd >really appreciate any help anyone out there could give. > >((beware of line wrapping)) ># Firewall configuration written by system-config-securitylevel ># Manual customization of this file is not recommended. >*filter >:INPUT ACCEPT [0:0] >:FORWARD ACCEPT [0:0] >:OUTPUT ACCEPT [0:0] >:RH-Firewall-1-INPUT - [0:0] >-A INPUT -j RH-Firewall-1-INPUT >-A FORWARD -j RH-Firewall-1-INPUT >-A RH-Firewall-1-INPUT -i lo -j ACCEPT >-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT >-A RH-Firewall-1-INPUT -p 50 -j ACCEPT >-A RH-Firewall-1-INPUT -p 51 -j ACCEPT >-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT >-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT >-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT >-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT >-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j >ACCEPT >-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j >ACCEPT >-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited >COMMIT > >...ok I did manually edit the file to add the http rule, but up until >now I've not had any problems doing that sort of thing. Iptables does >drive me just a bit crazy, but I do know enough to to that successfully >(up until now that is). Help! ...and thanks! Use `iptables -L` to see what the rules really are. `iptables -vL` with counts. `iptables -vnL` for numbers instead of names. Use `iptables -vL` before and after trying to get an uncached web page. See which counts went up. If that doesn't do it, use tcpdump and look for ports that you didn't open. -- ____________________________________________________________________ TonyN.:' <mailto:tonynelson@xxxxxxxxxxxxxxxxx> ' <http://www.georgeanelson.com/>
