A user asks:
I'm helping a customer try to use your telnet program remotely. They have
a 10 seat license and only using 4 internally. So one of the managers
installed Telnet pro at home but was unable to connect. So that's when I
got involved. I configured their router to forward port 23 to their
application server.
Problem is, the local ISP here blocks that port to protect
their routers. So the only option is for the IPS to bridge port 23, but
that requires a half day of down time to swap out hardware.
Our Suggestion:
How about removing the extra layer and installing sshd (openssh is freely available, see openssh.com) on the server and connecting with ssh (port 22, secure connection)? If you are using pro, the update to the current version is N/C and includes ssh support.
Another possibility if you really want to use telnet is to start a listener on the unix machine on a different port in addition to port 23, for example 2323. You can do that in the servers /etc/inetd.conf file and change the port that the remote user is trying to connect in on to 2323.
Author
Topic: port 23 blocked by ISP (Read 3064 times)