[asterisk-users] Is it possible to have two endpoints to the same IP address where one uses IP based authentication and the other requires asterisk to register to that system?

Thu Jan 4 12:07:41 CST 2018

Thank you George.

I will pass along the rfc information to those responsible for the other switch.

I missed the match_header addition to Asterisk.
Unfortunately, the only header field that seems appropriate is the To header.

On a separate box I am now trying to configure the endpoint recognition.  Planning on multiple endpoints to the same switch, so I am trying to use the match_header field.

I tried programming the match_header with the To: header information.  Unfortunately, it didn’t work.  Apparently the To header doesn’t work with the match_header field.
The Asterisk debug shows the following…

DEBUG[2778] res_pjsip_endpoint_identifier_ip.c: SIP message contains header 'To' but value '' does not match value '<sip:286 at xxx.xxx.xxx.xxx>' for endpoint '286'

From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of George Joseph
Sent: Tuesday, December 19, 2017 7:57 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Is it possible to have two endpoints to the same IP address where one uses IP based authentication and the other requires asterisk to register to that system?

On Mon, Dec 18, 2017 at 9:04 AM, Dan Cropp <dan at amtelco.com<mailto:dan at amtelco.com>> wrote:

Thanks George

I originally didn’t have the 1002@ for the identify.  Changed that when things were not working.  I changed it back.

Unfortunately, the system I am connecting with doesn’t seem to support the line support.  Looking at the SIP packets, I see Asterisk send it.  Unfortunately, they do not send the line information as part of the INVITE.  I checked with some developers of that system and they do not know anything about the line setting.

Is there any rfcs I could refer them to?

Yeah, I've found that some providers do and some providers don't.

https://tools.ietf.org/html/rfc3261#section-19.1

An implementation MUST include any provided transport, maddr, ttl, or
user parameter in the Request-URI of the formed request. If the URI
contains a method parameter, its value MUST be used as the method of
the request. The method parameter MUST NOT be placed in the
Request-URI.

Unknown URI parameters MUST be placed in the message's
Request-URI.

The identify object also has the capability to match against a specific header and value but it looks like it only tries to match on header if it can't find a match by ip address.  Here's some info on it anyway.

If you're provider puts something unique and constant in the headers, like a User-Agent string that doesn't change, you can also try using the "match_header" parameter to an identify object.

[my_provider]
type = identify
match_header = User-Agent: Something Unique 1.0.0
endpoint = provider

It has to be an exact match though, no wildcards or regular expressions.

I opened an issue[1] on separating ip matching from header matching so they can be re-ordered.

[1] https://issues.asterisk.org/jira/browse/ASTERISK-27491

From: asterisk-users-bounces at lists.digium.com<mailto:asterisk-users-bounces at lists.digium.com> [mailto:asterisk-users-bounces at lists.digium.com<mailto:asterisk-users-bounces at lists.digium.com>] On Behalf Of George Joseph
Sent: Thursday, December 14, 2017 10:59 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Is it possible to have two endpoints to the same IP address where one uses IP based authentication and the other requires asterisk to register to that system?

On Wed, Dec 13, 2017 at 10:51 AM, Dan Cropp <dan at amtelco.com<mailto:dan at amtelco.com>> wrote:

Currently using PJSIP.  First, they want me to get this working with the existing PJSIP configuration, but then setup a second box using chan_sip performing similar work.

For PJSIP…

I currently have an endpoint configured to a system using IP based authentication.  It is configured with a match setting in the endpoint section.

All channels coming from that IP address go to this endpoint.

They want me to keep this endpoint, but add a new endpoint where we register with them.

Existing…

[transport1]

type = transport

bind = 0.0.0.0

protocol = udp

[1002]

type = aor

remove_existing = yes

contact = sip:1002 at xxx.xxx.xxx.xxx

[1002]

type = endpoint

context = mycontext

transport = transport1

accountcode = 6

dtmf_mode = inband

device_state_busy_at = 48

force_rport = no

identify_by = username

from_user = 1002

disallow = all

allow = ulaw

acl = acl1

[identify112]

type = identify

endpoint = 1002

match = 1002 at xxx.xxx.xxx.xxx<mailto:1002 at xxx.xxx.xxx.xxx>

Check this first...  identify112 probably failed to load because the match parameter can only take an ip address

plus an optional netmask, or a hostname.  The '1002@' is invalid.

I setup the registration and the endpoint.

[286]

type = aor

remove_existing = yes

contact = sip:286 at xxx.xxx.xxx.xxx

qualify_frequency = 60

[auth8]

type = auth

username = 286

password = yyyyyyyyyyyyyyy

[286]

type = endpoint

context = mycontext

transport = transport1

outbound_auth = auth8

aors = 286

accountcode = 22

dtmf_mode = inband

device_state_busy_at = 48

force_rport = no

disallow = all

allow = ulaw

acl = acl1

[registration3]

type = registration

transport = transport1

client_uri = sip:286 at zzz.zzz.zzz.zzz

server_uri = sip:xxx.xxx.xxx.xxx

contact_user = 286

outbound_auth = auth8

expiration = 3600

The registration for the second endpoint works fine.  However, when I call through the other system for 286, it is failing.  For the INVITE from the other switch, the from_user varies depending on who is calling.  Asterisk logs report “No matching endpoint found” when it processes the INVITE for 286.

I believe the reason INVITEs work for the other channel is because they are programmed to support the match for this IP address.

Can anyone offer some suggestions?

You may be able to use the 'line and 'endpoint' registration parameters...

[registration3]

type = registration

...

line = yes

endpoint = 286

This causes asterisk to put the encoded endpoint name in the outgoing Contact header.  If the provider properly echos back Contact parameters when sending responses or new requests, asterisk will use the line parameter to match an endpoint.  I'll have to double check but I believe we do that BEFORE checking any identify object for a match.

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George Joseph
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445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com<http://www.digium.com/> & www.asterisk.org<http://www.asterisk.org/>

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_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --

Check out the new Asterisk community forum at: https://community.asterisk.org/

New to Asterisk? Start here:
      https://wiki.asterisk.org/wiki/display/AST/Getting+Started

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users

--
George Joseph
Digium, Inc. | Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com<http://www.digium.com/> & www.asterisk.org<http://www.asterisk.org/>

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