Set negotiation mode on Plink

Question

I am trying open a TelNet Connection using PLink

My connection string is: plink.exe -telnet -P <Port Number> <IP Address>

Although the connection is opened due to the firewall on the other side I can't login without changing the negotiation mode to passive

Here is how it's changed using Putty

I was an unable to find a documentation that explained how this can be done using PLink

PLink will eventually be used by a .net program and will log events passed through the connection. So I'm looking for a way to duplicate what Putty does either with PLink or with a .net 4.5 TelNet Nugget package

Do not launch external application to implement Telnet. Use .NET Telnet library. See https://stackoverflow.com/q/390188/850848 — Martin Prikryl, Jun 20 '17 at 15:47
@MartinPrikryl I have sees that, but I couldn't find it in nugget — nick zoum, Jun 20 '17 at 17:03
@MartinPrikryl downloaded the source code, still have the same problem with the negotiation mode — nick zoum, Jun 21 '17 at 07:39

score 1 · Accepted Answer · answered Jun 21 '17 at 07:46

Do not launch external application to implement Telnet. Use some .NET Telnet library.

See C# Telnet Library.

If you want to use Plink anyway:

Plink does not allow you to set most options using command-line.

What you can do it to create ad-hoc temporary stored settings in Windows registry and have Plin use that using -load switch.

For your needs you need to create keys like:

[HKEY_CURRENT_USER\SOFTWARE\SimonTatham\PuTTY\Sessions\passive_telnet]
"HostName"="example.com"
"Protocol"="telnet"
"PortNumber"=dword:00000017
"PassiveTelnet"=dword:00000001

I ended up downloading the C# class you mentioned and doing some modifications to it — nick zoum, Jun 21 '17 at 08:13

Set negotiation mode on Plink

1 Answers1