Hi Alvaro,
              DNS is using port 53, I think you should consider unblock
this port if you want your DNS to communicate with your ISP DNS.


Rdgs,
Bryan



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will this access list modification prevent my internal DNS server from
updates to it self from my telco's DNS server?

access-list 101 deny 53 any any
access-list 101 deny 55 any any
access-list 101 deny 77 any any
access-list 101 deny 103 any any
!--- insert any other previously applied ACL entries here
!--- you must permit other protocols through to allow normal
!--- traffic -- previously defined permit lists will work
!--- or you may use the permit ip any any shown here
access-list 101 permit ip any any

Thanks in advance

~alvaro Escobar

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