Telnet: Connection Closed by Foreign Host

Good day:

I know just enough about Linux to get into trouble; appreciate your patience … :wink:

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 !!!

BTW - I understand this would be more appropriate at forums.Suse.com but I seem unable to post … the button does not present itself

On 2014-05-10 01:06, DBrenchley wrote:
>
> Good day:
>
> I know just enough about Linux to get into trouble; appreciate your
> patience … :wink:
>
> I’ve setup a SLES 11.3 server (Xen Hypervisor / SLES 11.3 DomU) as a

> BTW - I understand this would be more appropriate at forums.Suse.com but
> I seem unable to post … the button does not present itself

But openSUSE users can not help you, unless they also happen to be SUSE
users. And then, they will be subscribed there already.


Cheers / Saludos,

Carlos E. R.

(from 13.1 x86_64 “Bottle” (Minas Tirith))

Thank You Carlos … I’m sure the talent here is more than able to offer their opinion …

On Fri 09 May 2014 11:06:01 PM CDT, DBrenchley wrote:

Good day:

I know just enough about Linux to get into trouble; appreciate your
patience … :wink:

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 !!!

BTW - I understand this would be more appropriate at forums.Suse.com but
I seem unable to post … the button does not present itself

Hi
Can you try posting in the SUSE forum again, else will have to see if
the forums admin can sort your account out.


Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
openSUSE 13.1 (Bottle) (x86_64) GNOME 3.10.1 Kernel 3.11.10-7-desktop
If you find this post helpful and are logged into the web interface,
please show your appreciation and click on the star below… Thanks!

No Joy Malcolm … I can’t even send them an email …

On 2014-05-10 15:46, DBrenchley wrote:
>
> malcolmlewis;2642242 Wrote:
>> Hi
>> Can you try posting in the SUSE forum again, else will have to see if
>> the forums admin can sort your account out.
>
> No Joy Malcolm … I can’t even send them an email …

Try posting in this forum support area, or ask a moderator to move this
thread there. Probably they can contact the other forum support people.


Cheers / Saludos,

Carlos E. R.

(from 13.1 x86_64 “Bottle” (Minas Tirith))