My Red Hat Linux 6.2 machine provides IP Masquerading for 2 Windows 98 Second Edition machines on my network. The Windows machines run AOL Instant Messenger. Lately, when the Instant Messenger people release an upgrade, you will be notified of the upgrade availability as soon as you sign on to Instant Messenger.
When I sign on to Instant Messenger with the Windows 98 network running (e.g. no Linux masquerading is provided -- I have functional internet connection sharing under both Windows and Linux), Instant Messenger will notify me of available upgrades.
But if I sign on to Instant Messenger using one of the Windows machines and with the Linux machine providing internet connectivity, Instant Messenger will NOT notify me of an available upgrade, even though there is one.
So...do you think I have a problem with my ipchains statements?