yonatan pingle wrote:
Thanks for your response.
I am not sure it's related to centos that much, when it comes to port forwarding, if you might use iptables correctly with several NIC(s),
I should have said that I am using shorewall, which seems to work perfectly for my purposes.
if you can create a vlan with your linksys, like they talk about here: http://www.dd-wrt.com/phpBB2/viewtopic.php?p=4692
I'm not really clear if there is any difference between vlan and vpn. In any case I am running OpenVPN on the server linking computers in 2 countries, and this seems to work perfectly.
One obvious possibility is that the IBM Lotus "sametime" program that is not working properly requires some port to be open; but I haven't been able to work out which port, if that is indeed the cause of the problem.