[Serusers] TCP sockets and NATs

Hi, This is a question that has been bugging me for some time now. If I use SER and the clients connected to it use only TCP, will there be a problem with the number of sockets that can be open at the same time, if these clients are behind NAT? I mean that for NAT bindings to stay open, each client has to keep open TCP connection to SER all the time after registration. What is the maximum number of open sockets that Linux can handle at the same time? I've changed the maximum number of open files to 65535 (ulimit -n 65535). Doesn't this also mean the maximum number of sockets? Is this the absolute maximum? Also, does this mean the maximum number of clients that can connect to my proxy? Regards, Teemu -- Teemu Harju http://www.teemuharju.net