On Fri, 2006-04-07 at 12:29 +0530, Kaushal Shriyan wrote: > Hi All > > when I execute the below command on my linux box > [root@bdc31096e root]# telnet 0 > telnet: 0: Temporary failure in name resolution > 0: Host name lookup failure ---- evidently, there is no host '0' on your network - thus you have gotten the only reasonable response possible. if you are attempting to telnet to localhost port '0', you would probably want to tell it 'telnet localhost 0' 'man telnet' though I am unaware of any service on port 0 that would respond you might want to 'cat /etc/services' for a list of well known ports Craig