Invoking telnet from two different interfaces

telnet

I use telnet to test email server connectivity between servers.

My server has two interfaces, I'd like to telnet over each.

Basically I'd like to choose source (one of my local ip addresses) AND destination when using telnet.

Is this possible?

Best Answer

My manpage tells me that telnet -b <sourceaddress> <destination> is the winning combination.

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Sql-server – “Connection failed” error when trying to telnet into SQL Server

Maybe the computer you are using are not permitted to telnet the SQL server according to the access rule. Can you check the privilege?

Router – Different behaviour of netcat from telnet when connecting to public route server

If you connect with telnet and start by giving the command term len 0, it seems to not use pagination.

At a guess, the reason it doesn't do any pagination when using netcat is that it's probably not doing the expected TELNET protocol negotiations for basic terminal characteristics.

Edit: Seems the main problem is that it just plain takes too long to display the full routing table. After leaving a telnet session, with term len 0 and sh ip bgp running, I ended up with:

Vty connection is timed out.
Connection closed by foreign host.

It MAY be that having periodic data sent to the route server (maybe a space character every 45 seconds) may be enough to not trigger the VTY time-out, but I'd need to check the source code to be sure.

Best Answer

Related Solutions

Sql-server – “Connection failed” error when trying to telnet into SQL Server

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