Telnet Server

[Yehey]

Hi,

Is there a public telnet server to connect to a certain host?


Thanks.

 

[burtsbees]

What???

Burt

 

[Yehey]

Hi Burt,

A public server where i can perform telnet to a certain host. (if there is one).
Most public servers are in global mode only.


Thanks.

 

[burtsbees]

Still not sure...you mean go out to the internet, find a server and log into it, and from there telnet into a remote host of your own???

Burt

 

[Yehey]

Yep, just like a public route server. Just with telnet features enabled.


Thanks.

 

[brianinms]

Why would you want to do that? All your traffic would/could be logged and will be in clear txt. You would be better off using SSH ... however your traffic would/could still be logged.

What are you trying to accomplish?

 

[norteldude78]

what would you need a public telnet server for? if you want to telnet to a device, the device itself must have telnet service. you need a telnet client, which all (most?) OSes have builtin.

 

[Yehey]

The reason im asking is, i just caught a public host trying to access our router, thats why im trying to simulate what he did. Im not sure if telnet is enabled in our router from other networks. This should be blocked for security purposes, since im not the one responsible for network security, i just wanted to be sure before i report it.

I also wanted to know also what the "idle" means in the command "show user" and how long can it get (00:00:00 - ?).


Thanks.

 

[brianinms]

Why not just try to telnet to the router from your house? Idle means the time the user has been connected, but hasn't done anything.

 

[norteldude78]

yehey, it sounds you are looking for a telnet client, your device would be the "server" in this case. Perhaps you are looking for a jumping spot or a way to hide who you are....then you can use a proxy. I dont know how long idle can get by default (5 minutes maybe?), but I think it is a function of "exec-timeout" command on the line:

line vty 0 4
exec-timeout <seconds>

Does that help?

If telnet is not enabled on your router, than that guy is out of luck trying to telnet...what exactly did you see?

-B

 

[Yehey]

norteldude,

i just saw him trying to access by commanding the show user command. he couldn't login maybe cause of the strong password and tried lots of username also. I think that it was a program or trojan trying to access our router. Thanks for the info btw about exec-timeout.

briannms,

i want to try to telnet using a different network. Im subscribed to our services and all our ip blocks are allowed in the ACL so im out of luck.

I already tried it using a diff network, and yes, telnet is indeed enabled in our router.

Thanks.

 

[brianinms]

I disable all remote access for routers outside the firewall.

 

[burtsbees]

I would either VPN in and disable telnet, or at the very least enable ssh and on the vty lines...

line vty 0 4
transport input ssh

Burt