These are the results of running the commands. Does it look like there is anything that could be interfering with port 3128 connections? -------------------------------------------------------------------- > iptables-save # Generated by iptables-save v1.2.11 on Thu Jun 28 15:32:38 2007 *nat :PREROUTING ACCEPT [525278:45243592] :POSTROUTING ACCEPT [420:38931] :OUTPUT ACCEPT [420:38931] COMMIT # Completed on Thu Jun 28 15:32:38 2007 # Generated by iptables-save v1.2.11 on Thu Jun 28 15:32:38 2007 *mangle :PREROUTING ACCEPT [702539:100216603] :INPUT ACCEPT [211958:57721156] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [76059:28676083] :POSTROUTING ACCEPT [76059:28676083] COMMIT # Completed on Thu Jun 28 15:32:38 2007 # Generated by iptables-save v1.2.11 on Thu Jun 28 15:32:38 2007 *filter :INPUT ACCEPT [535723:156552090] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [177395:71003870] COMMIT # Completed on Thu Jun 28 15:32:38 2007 -------------------------------------------------------------------- > iptables --list Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination -------------------------------------------------------------------- > iptables -n -L INPUT Chain INPUT (policy ACCEPT) target prot opt source destination -------------------------------------------------------------------- > telnet #.#.#.# 3128 [FROM CLIENT] Could not open connection to host on port 3128. Connection failed -------------------------------------------------------------------- tcpdump -n -i any port 3128 WARNING: Promiscuous mode not support on the "any" device -------------------------------------------------------------------- > > Could you advise of how I can determine if there is some firewall running? > > To check if there is a local firewall running: > > iptables-save > > To check if there is a firewall between the client and the Squid server: > > run "tcpdump -n -i any port 3128" on the Squid server, then on a client > run "telnet ip.of.squid.server 3128". > > Regards > Henrik > ____________________________________________________________________________________ Be a PS3 game guru. Get your game face on with the latest PS3 news and previews at Yahoo! Games. http://videogames.yahoo.com/platform?platform=120121