Since I have started posting a lot more I have noticed that, while perusing different threads, I am suddenly logged out of my

account and marked as a guest. It often happens while I am in the middle of a post that requires research, thought, and loads of random babbling
For some reason, if I am logged out when I try to REPLY to a post, it notifies me and allows me to log in (sending me directly to the editing interface). However, when I am logged out mid reply it tells me only after I SEND it and tells me I am not allowed to post. I am, of course, able to copy the response, but I have to navigate all the way back to the thread in order to re-post it.
So here it is:
Do I need to set port triggering for

in order to not log out? If so, which port?
Also, is it possible to make it so that, once I re-log after attempting to submit a post, that it could go ahead and submit for me. I mean, darnitall, I proved I wasn't a guest