General query for the networking gurus - I found the solution but I don't know the why.
Home network - mixed winxx and linux - connected to internet via adsl router - netgear DG834 - all co-existing happily.
Introduce spare time, curiosity, old P3 box (gift) and Smoothwall / IPCop.
Result - tear hair out trying to get linux box working thru firewall due to DNS not working (winxx boxes OK).
Reason - DNS server info is being overridden by greyed out static IP settings in GUI (FC5 Gnome) interface specifically the gateway address see
Network device control > Configure > edit ethernet device
Select Statically set IP addresses and remove all info in this section (all fields blank).
Reselect automatically obtain IP addresses.
Deactivate interface (downs & ups the interface with fresh DNS info) and all is fine.
Is this a FC5 only problem?? Anyone care to test with other FC releases.