Thanks for the quick response.
I haven't changed the DHCP range yet until I get the proxy working. I have changed the netmask on servers and the firewall but they are still all on 192.168.0.x anyway so chaging the netmask on the proxy to /22 should have no effect.
Having said that I just run 'shutdown -r now' and a test machine with ip address 192.168.1.x can now access the internet via the proxy so I am guessing that changing this config:-
acl myIP src 192.168.0.4/255.255.252.0
acl myIP src 192.168.0.0/255.255.252.0
followed by the shutdown appears to have worked.
I may try to chage the netmask also of eth0 but if this works I may well leave it. Do you think I need to shutdown and restart after making the changes? Also, are the changes permanent or do they need to be written?
Last edited by JHMorris; 01-21-2009 at 06:49 AM.