Telnet: Connection closed by a foreign host
Good day:
I know just enough about Linux to get into trouble; appreciate your
patience ... ;-)
I've setup a SLES 11.3 server (Xen Hypervisor / SLES 11.3 DomU) as a
gateway ahead of 3 network switches. I'm masquerading the switch
management ip's.
There are (2) 10G switches whose management interfaces are attached to a
1G Switch. The 1G switch employs in-band management. I've setup the port
forwarding:
0/0 8123 0/0 192.168.50.201 23
0/0 8223 0/0 192.168.50.202 23
0/0 8323 0/0 192.168.50.202 23
0/0 8122 0/0 192.168.50.201 22
0/0 8222 0/0 192.168.50.202 22
0/0 8322 0/0 192.168.50.202 22
Remotely I can Telnet or SSH w/ no issues into the 10G switches but
attempts to get into the 1G results in no activity and the client window
closes OR I'll get a login challenge but the console appears
unresponsive and the client window eventually closes.
From the Guest VM I get the login challenge; I can enter credentials;
the connection opens; then immediately closes w/ the message "Connection
Closed by Foreign Host".
I can ping all the switches via the private network but the 1G shows
response times approaching .5 secs ....
From the vantage point of the private network I can Telnet/SSH perfectly
fine.
Being a total dunce .. I appreciate any suggestions as to how to debug
this ..
THANKS !!!
|