Let's see what your firewall config looks like. Not sure if you have permissions to do this since you are not root but we do not know what permissions the admin gave you so...
Code:
iptables -L -n --line-numbers
If this command works, paste the results.
If this happened during a power cycle, the firewall config in memory probably was not saved and iptables, assuming this is the firewall software you are using, reverted back to the iptables config file. When the admin returns, make sure you know how to restore the correct config file, if you are authorized to do so. Sounds like the admin should have a disaster manual. I have one for when I leave that lists the problem and steps to resolve the problem.
