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Hi I know I still need to learn a lot about firewalls so if I''ve missed some doc I should have read don''t hesitate to point it out to me. I have set up shorewall on my desktop and my laptop and everything appears to be working fine but now I''d like to allow certain services (like shh, rsync, unison, http) between these two PC''s. My LAN looks like this:

I found that for a modern PC running zero loads, (my server is a P4 3.2 with 512 M dual channel RAM an Intel Etherpro Express 100 nic, serving cached disk files from RAM) samba could be 30% slower than it should be. It would serve data at about 7 MBytes/sec compared with the old NT4 sever (same Intel nic, 512 RAM, P2/266 Cpu, NT4 with SP6a) that would do it at 10 Mbytes/sec under all circumstances.. In both cases,...

...| +-------------+ | | (172.17.17.2) | (eth0) xenbr1 +---------------+ | +-- xenbr0 | +---------------+ | xeno (dom0) | | (10.0.0.1) | +---------------+ The domU host "fw" has the e100 (Intel EtherPro 100) driver loaded for eth2 (the PCI device was hidden from dom0). Hosts "xeno" and "fw" are connected to bridge "xenbr0", hosts "dmz" and "dmz" are connected through bridge "xenbr1". Routing tables are at the end of this post. Note that...

...| +-------------+ | | (172.17.17.2) | (eth0) xenbr1 +---------------+ | +-- xenbr0 | +---------------+ | xeno (dom0) | | (10.0.0.1) | +---------------+ The domU host "fw" has the e100 (Intel EtherPro 100) driver loaded for eth2 (the PCI device was hidden from dom0). Hosts "xeno" and "fw" are connected to bridge "xenbr0", hosts "dmz" and "dmz" are connected through bridge "xenbr1". Note that there''s no firewall installed (yet)...