UBB.Developers Forums UBB.threads 7 Development How Do I? Firewall bloks post here?

I just learned that my Norton Firewall blocks post on this forum.
Now, for most of us here, who are familiar with all this things, I just disable my firewall, post and enable again.
How practical is this security for our own foruns, where most of the people are not IT savis?
and how do you manage to inform your customer to disable the wirefall to post on your forum?

I tell them to use a decent firewall

that helps a lot ...