Linux telnet limit

[chaz_d]

Hi,

Bit of a conundrum on telnet to OpenSUSE (Have discussed security aspect but user group insistent on using telnet).

Once they get to 31 logins using telnet, they can do no more.

Any ideas how to increase this limit?

pty limit is 4096, so that's not it.

Thanks in advance,

Chaz.

[carlosponti]

I would consider using another way to log in, Telnet is atrocious for security. I would suggest SSH which is not only secure but more capable in my opinion.

[chaz_d]

I appreciate your point, Carlos, and I agree, but the problem is that the PC client software in use is hard coded for telnet only, so I'm pretty much stuck with it.

However, I've had a solution from bigtomrodney, which has worked a treat.

Up the "instances" parameter in /etc/xinetd.conf and restart xinetd.

Sorted.

Thanks again,

Chaz.

[GNU-Fan]

chaz_d, if you are bound to the telnet protocol on application level, you might still want to tunnel it over encrypted connections.

For example, use ssh as the endpoints. Throw all telnet data into some port on the client machine and it comes out on the server machine and is forwarded to the telnet listening port on the same system.

SSH: Tunneling Explained