Hi I have several squid boxes on LAN running through Checkpoint firewall . Sometimes 1 stops serving . - I can login to that proxy with putty. - I can see that the squid server process is running (also service is restarted) - I cant ping the pingable IP addresses through the shell . Since other proxies which working through the same firewall are working , people easily blame the problem. after stopping the firewall services and starting and waiting a while the proxy starts pinging the net and start serving again. I dont know if someone is playing with something (on network, on proxy etc). So what do you think that issue can be , what to check , which logs to look up etc? Regards