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coreybrett · 02-02-2010, 07:46 PM

I’m really confused.

I have the default action of UT firewall set to “Block”.

I have a few rules to allow the basics (HTTP, HTTPS, POPS, IMAPS, etc).

Even when I disable all my rules, my SIP phone is able to make and receive calls.

My computer (connected to the same switch as the phone) is unable to access the web at all while those rules are disabled.

I even disabled the rules, and restarted the UT box, and the phone was able to work after the UT box came back up while my computer was not.

After enabling the rules my computer can connect as normal, the point being, I know the rules and firewall are working, I just don’t understand my the phone is.

I assumed I would need to open the ports used for SIP, but apparently not (I can’t even block them).

Could someone explain this please?

The reason I even care is because I am in the process of learning/deploying a SIP PBX.

02-02-2010, 07:46 PM	#1 (permalink)
coreybrett Untangler Join Date: Apr 2009 Posts: 59	Firewall not blocking a SIP phone I’m really confused. I have the default action of UT firewall set to “Block”. I have a few rules to allow the basics (HTTP, HTTPS, POPS, IMAPS, etc). Even when I disable all my rules, my SIP phone is able to make and receive calls. My computer (connected to the same switch as the phone) is unable to access the web at all while those rules are disabled. I even disabled the rules, and restarted the UT box, and the phone was able to work after the UT box came back up while my computer was not. After enabling the rules my computer can connect as normal, the point being, I know the rules and firewall are working, I just don’t understand my the phone is. I assumed I would need to open the ports used for SIP, but apparently not (I can’t even block them). Could someone explain this please? The reason I even care is because I am in the process of learning/deploying a SIP PBX.