This won't work if the firewall is blocking SSH traffic. Now, if it's just port 22 being blocked, then you setup your sshd to run on something like port 80. At an internship where I had a lot of downtime, I had to setup my sshd to run on 443 since work was blocking pretty much anything that wasn't web traffic. Luckily my domain wasn't on the company URL blacklist.
This won't work if the firewall is blocking SSH traffic. Now, if it's just port 22 being blocked, then you setup your sshd to run on something like port 80. At an internship where I had a lot of downtime, I had to setup my sshd to run on 443 since work was blocking pretty much anything that wasn't web traffic. Luckily my domain wasn't on the company URL blacklist.