Windows 10: Failing to connect to a Telnet host on port 23 via a VPN only when going through router.

I've been going crazy trying to narrow down this issue. So to start, I am trying to connect to a remote server for work. This connection is using a telnet client program on my pcs. One is Windows 10, the other, Windows 7. Both also have a vpn client installed and I am successfully connected to the vpn on either device. This setup works just fine when I connect directly to my modem, bypassing the router, so something about the router is interfering.


When I use the router, I always get a connection failed error when trying to connect via the 3rd party telnet client symtrax or using the built in Windows telnet client. I can still connect to the vpn service without issue though. So I'm trying to figure out what I'm missing here. I tried disabling the router's firewall, but that did nothing. I tried different port forwarding options, that also did nothing.


My router is an Asus RT-AC68P

Just for completeness, here is what I added for port forwarding:


Telnet

Protocol: TCP

External Port: 23

Internal Port: Blank I have tried putting 23 in here too, but that didn't change anything

Internal IP: I chose one of the pcs that I have the vpn client installed on. I also made sure this pc was using a static ip.



I wasn't sure if having a vpn involved would require me to use different info or another method to tunnel through the router and allow me to connect. I just feel like it must be something relatively simple getting in my way here. Any ideas are appreciated. Thanks.

:)

 

telnet connection failed on port 23

Port 23 is the usual telnet port. You can't connect to cs.purdue.edu because they don't allow it. I can't either.

There's nothing you and I can do to make purdue accept telnet connections.

Have you been specifically directed to use telnet to cs.purdue.edu?

 

telnet connection failed on port 23

i'm suppose to log into remote machines using telnet but in the task i have, there's no ip adresses for that ! instead i have hostnames. i'm a bit new in this and i don't know what i'm suppose to get. i'm asked to try these following:

i keep getting the same result:

i know the telnet command usually requires two arguments but it's not specified in this task! i tried to enable telnet on services but i didn't find it, i also restarted the pc after downloading the telnet client and even tried to run the command several times and in two different computers but still the same result ! is there any solutions or clarification for this problem ?

OS : win 10

 

Could not open connection to the host, on port 23: Connect failed - How to fix on Windows 10?

So I've been trying to fix a destiny 2 cabbage and lettuce error, and I need to access TelNet. Every time I try to connect it brings up the message

"Could not open connection to the host, on port 23: Connect failed". How do I fix this?

Thank you