[asterisk-users] cisco phones getting SIP 401 unauthorized

[peder at networkoblivion.com]

What did the firewall change from and to?  Did you have NAT enabled in * 
AND on the Cisco phones?  FYI, if you have NAT enabled in both places, 
it will work if you have NAT in your setup or not.  If you don't have it 
enabled in both places, then it may or may not work depending on your setup.

Matt Gibson wrote:
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jerry Geis
> Sent: Wednesday, October 08, 2008 10:13 AM
> To: asterisk-users at lists.digium.com
> Subject: Re: [asterisk-users] cisco phones getting SIP 401 unauthorized
> 
>> Hi Jerry, 
>>
>> Hm, okay. We had to use md5secret (instead of secret) in the sip.conf for
>> our 7970's to get them to successfully register with asterisk. However, if
>> you had them working before then I doubt this is the issue. You can try
>> anyway though,
>>
>> http://www.voip-info.org/wiki/index.php?page=Asterisk+sip+md5secret
>>
>> We use both secret= and md5secret= with the same password in each, one
>> encrypted and one not encrypted - this seemed to let our 7970 register.
>>
>>   
> Matt,
> 
> I looked at this and did what it says for 1 of my phones.
> Still no go.
> 
> I have a mix of polycom and cisco phones at this location and
> the polycom continue to work. The cisco are now having issues.
> The only change that had been made is the customer changed their firewall.
> 
> All addresses remained the same just a new firewall. Polycom works cisco 
> is not registering.
> 
> Any thoughts?
> 
> Jerry
> 
> 
> 
> 
> Hi Jerry, 
> 
> Hmm. We had to replace our router with one that supported SIP ALG (we went
> cisco). However, since you mention all the phones are in the LAN this
> shouldn't make a difference. 
> 
> Does the problem go away if you go back to the old firewall?
> 
> Thanks,
> Matt
> 
> 
> 
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