> hadi motamedi wrote: >> >> Thank you . How can I distinguish which package is missing from my >> CentOS server and try to just add it (rather than trying for a fresh >> CentOS re-installation) ? On another machine similar to mine , the >> output is as : <snip> > The lsof output shows a program named iptrans is listening on 4965. Try <snip> > packagename' (and perhaps some configuration afterwards). I don't > recognize this program, though. Are you sure it came from an rpm package? google linux iptrans, and it appears to be something for "IP transparency", which seems to pass along a real IP through something, not sure if it's a firewall, or a cluster head. Are you using a cluster? mark