[Firehol-support] Routing between virtual interfaces

Carlos Rodrigues cefrodrigues at gmail.com
Sun Jan 25 20:38:19 GMT 2009

On Sun, Jan 25, 2009 at 11:59 AM, M. O. <mofog at hotmail.com> wrote:
> Again: it works "sometimes". For example alpha can ping delta, but beta
> can't. Wait a few minutes and the behaviour may be vice versa. Even more
> interesting is that delta happens to be a network printer with a web
> interface. Even when I'm able to reach the printer by ping, I may not be
> able to access it's web interface (things are getting spooky here, don't
> they?).

You should check if that also happens with forwarding enabled ("echo 1
> /proc/sys/net/ipv4/ip_forward") but without any kind of firewall. It
may be a problem with something firewall-related (like connection
tracking) or it may be something else entirely.

Carlos Rodrigues

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