[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?

Tue Dec 19 07:56:37 CST 2017

On Mon, Dec 18, 2017 at 9:04 AM, Dan Cropp <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'sRequest-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] *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> 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
>
>
>
>
>
> 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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>
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>
> New to Asterisk? Start here:
>       https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
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>
>
>
>
>
> --
>
> George Joseph
> Digium, Inc. | Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US
> Check us out at: www.digium.com & www.asterisk.org
>
>
>
> --
> _____________________________________________________________________
> -- 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 & www.asterisk.org
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