SIP User's Manual
472
Document #: LTRT-12804
Mediant 800 MSBG
The following example describes the Digest Authentication procedure, including
computation of user agent credentials:
1.
The REGISTER request is sent to a Registrar/Proxy server for registration:
REGISTER sip:10.2.2.222 SIP/2.0
Via: SIP/2.0/UDP 10.1.1.200
From: <sip: [email protected]>;tag=1c17940
To: <sip: [email protected]>
Call-ID: [email protected]
User-Agent: Audiocodes-Sip-Gateway/Mediant 800 MSBG/v.6.00.010.006
CSeq: 1 REGISTER
Contact: sip:[email protected]:
Expires:3600
2.
Upon receipt of this request, the Registrar/Proxy returns a 401 Unauthorized
response:
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.2.1.200
From: <sip:[email protected] >;tag=1c17940
To: <sip:[email protected] >
Call-ID: [email protected]
Cseq: 1 REGISTER
Date: Mon, 30 Jul 2001 15:33:54 GMT
Server: Columbia-SIP-Server/1.17
Content-Length: 0
WWW-Authenticate: Digest realm="audiocodes.com",
nonce="11432d6bce58ddf02e3b5e1c77c010d2",
stale=FALSE,
algorithm=MD5
3.
According to the sub-header present in the WWW-Authenticate header, the correct
REGISTER request is created.
4.
Since the algorithm is MD5:
•
The username is equal to the endpoint phone number 122.
•
The realm return by the proxy is audiocodes.com.
•
The password from the
ini
file is AudioCodes.
•
The equation to be evaluated is (according to RFC this part is called A1)
‘122:audiocodes.com:AudioCodes’.
•
The MD5 algorithm is run on this equation and stored for future usage.
•
The result is ‘a8f17d4b41ab8dab6c95d3c14e34a9e1’.
5.
Next, the par called A2 needs to be evaluated:
•
The method type is ‘REGISTER’.
•
Using SIP protocol ‘sip’.
•
Proxy IP from
ini
file is ‘10.2.2.222’.
•
The equation to be evaluated is
‘REGISTER:sip:10.2.2.222’.
•
The MD5 algorithm is run on this equation and stored for future usage.
•
The result is ’a9a031cfddcb10d91c8e7b4926086f7e’.
Summary of Contents for Mediant 800 MSBG
Page 2: ......
Page 366: ...SIP User s Manual 366 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Page 372: ...SIP User s Manual 372 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Page 390: ...SIP User s Manual 390 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Page 404: ...SIP User s Manual 404 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Page 616: ...SIP User s Manual 616 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Page 636: ...SIP User s Manual 636 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Page 652: ...SIP User s Manual 652 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...
Page 886: ...SIP User s Manual 886 Document LTRT 12804 Mediant 800 MSBG Reader s Notes ...