[Samba] Packet filter rules for "outgoing" SMB connections/mounts only?

[Andreas Schildbach]

Hello everyone,

Is it possible to configure the packet filter for Linux kenel 2.4.x in a 
way so outgoing connections (mounts) from the firewalled machines (to a 
specific IP address) are possible, but no incoming SMB mounts are 
allowed at all.

In other words, I want to be able to mount a share of an external 
machine, but like to keep the security risks involved as small as possible.

Regards,

Andreas