Re: switching from 2.2 to 2.4 kernels

[rich <rich_walker@blueyonder.co.uk>]

On Tuesday 02 October 2001 20:10, Dave Carrigan wrote:
> rich <rich@octopus.rudedog.org> writes:
> > Running a debian testing box on a lan behind an ipchains masquerader
> > attached to a cable modem,  I tried to upgrade to 2.4.9-686. When running
> > 2.4.9-686 (version 2.4.9-1), I could not access my server's POP3 or SMTP
> > server: I got connection refused when doing "telnet pop3.blueyonder.co.uk
> > pop3". Rebooting into 2.2.19--10 fixed it. Both kernel versions are fresh
> > installs, untweaked by me (I reinstalled everything following disk
> > failure)
> >
> > 1. Does anyone have any ideas what differences between 2.2.19 and 2.4.9
> > might cause this?
> > 2. Is it a bug in the 2.4.9 versions that they break the 2.2.19
> > functionality without telling us?
>
> 2.4.x uses a completely different firewall than 2.2.x (iptables instead
> of ipchains). Has the kernel config for the 2.4 been compiled with the
> legacy ipchains support, or the new iptables support?

2.4.9 version is the kernel-image debian package from testing. Masquerading 
is done on a 2.2.16 slackware box between the debian box and the cable modem. 

HTH

cheers, Rich.