Hi. As you said in the title, 2302 is the port used by the server. So, unless they changed it... (and even with that, you don't know the ports that have been blocked by the network administrator) Perhaps there is a free wifi connection at your work that is not located in the local network~
"It was the 23rd century, mankind's darkest hour. [...]"
Bad news for me then, because my work is several miles away from anything that we can call a village, it's in the middle of nowhere... Well, I will try to use my phone who give me a 2G connection there... sometimes. It's hard to work in a security zone haha