Dear Friends, As suggested by one friend, I tried to use 'nmap', it seems telnet server is running on one host, however, it is still unable to connenct from the other host, see the edited script below: --- script starts --- [root@yu0 root]# ping xia.yusun.net PING xia.yusun.net (192.168.1.2) 56(84) bytes of data. 64 bytes from xia.yusun.net (192.168.1.2): icmp_seq=1 ttl=64 time=0.118 ms 64 bytes from xia.yusun.net (192.168.1.2): icmp_seq=2 ttl=64 time=0.113 ms 64 bytes from xia.yusun.net (192.168.1.2): icmp_seq=3 ttl=64 time=0.116 ms --- xia.yusun.net ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2011ms rtt min/avg/max/mdev = 0.113/0.115/0.118/0.012 ms [root@yu0 root]# nmap -sX -p 22-100 xianotebook Starting nmap V. 3.00 ( www.insecure.org/nmap/) Interesting ports on xia.yusun.net (192.168.1.2): (The 77 ports scanned but not shown below are in state: closed) Port State Service 22/tcp open ssh 23/tcp open telnet Nmap run completed -- 1 IP address (1 host up) scanned in 2 seconds [root@yu0 root]# telnet xia.yusun.net Trying 192.168.1.2... telnet: connect to address 192.168.1.2: Connection refused [root@yu0 root]# ssh xia.yusun.net ssh: connect to host xia.yusun.net port 22: Connection refused ----script end ---- Tried as oridinary user, same results. I appreciate your help ! Yu __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list