Re: Cisco Workaround

[Stephane Nasdrovisky <stephane.nasdrovisky () uniway be>]

My phone is plugged in the port 53 of our pabx, will I have to plug my phone in another port if I implement this access 
list ?

>              DNS is using port 53, I think you should consider 
> unblockthis port if you want your DNS to communicate with your ISP 
> DNS.
>
> 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



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