allow-transfer uses what port?

[Zyxian]

Hello all.
I have just installed RH 9 and went with the default setup for IPTables. It said that it would punch a hole through the firewall to let DNS through. I also got a different block of IPs and changed the address of my DNS server with networksolutions. Well 72 hours later nothing propagated. I did some searching and, NO, DNS wasn't being "punched" through the IPTables setup. I added a line that allowed port 53. My DNS is now propagating.
My DSL provider is doing secondary for me. I got to wondering - What port does the option allow-transfer use? I want to make sure I don't have the port blocked....

Zyxian
I Learn More When Something Goes Wrong.

 

[Morsing]

allow-transfer uses 53/tcp. If your ISP got your zone then you must have it open.

Cheers

Henrik Morsing
Certified AIX 4.3 Systems Administration
& p690 Technical Support

 

[Zyxian]

Thank you Henrik.
No. They still show the old information. Now that I know that they SHOULD be getting the info since the port is open, I will have to call them and find out why they aren't pulling the information let alone doing a normal DNS propagation.

Zyxian
I Learn More When Something Goes Wrong.

 

[Morsing]

Remember that DNS queries uses UDP while zone transfers uses TCP.

Cheers

Henrik Morsing
Certified AIX 4.3 Systems Administration
& p690 Technical Support

 

[Zyxian]

Thanks for the clarifing statement. I did the bad thing of assuming it was UDP for both. Luckily for me 53/TCP was enabled already.

I did call my ISP and found they don't do updates from my server name but from the IP address. I had to submit a form to get them to change where they pull from. Another 24 to 72 hours. OY!

Zyxian
I Learn More When Something Goes Wrong.