MSWINSOCK errors through Mikrotik

RouterOS General
1

I have a customer using a Point of Sale machine that needs to communicate out and in on two specific ports using an MSWINSOCK protocol. These packets can communicate through their modem and generic router without any issues. However, it seems as if the traffic that uses the MSWINSOCK protocol can’t get out of the Mikrotik to the internet. Is there something in 2.9.44 that could be blocking this or must be enabled to allow this traffic to get to its destination?

Thanks in advance.

2

which 2 ports are they ? winsock is just windows tcp/ip stack pretty much. Just forward those 2 ports to the POS machine - and if it’s 135-139 or 445 then it might be blocked from your ISP.

3

The ports in question are being forwarded. They are 12536 and 12546.
The ISP isn’t blocking them as they’ll work through a generic router.

It is noted that I see the information being sent on port 10018. Do I need to do any src-natting to send out on ports 12536?