[Asterisk-Users] Asterisk as a SIP server behind nat, clients on the outside connecting to Asterisk

[AstGrp]

I have this working, with not much work...

SIP CONF

[general]
port = 5060                     ; Port to bind to
bindaddr = 0.0.0.0              ; address to bind to
externip = <NAT IP / Outside IP>         ; Address that we're going to
put in SIP messages if we're behind a NAT
localnet = 10.100.254.0         ; Internal NETWORK address
localmask = 255.255.255.0       ; Internal netmask
context=default                 ; Default for incoming calls
;srvlookup = yes                ; Enable SRV lookups on outbound calls
;pedantic = yes                 ; Enable slow, pedantic checking for
Pingtel
;tos=lowdelay
;tos=184
;maxexpirey=3600                ; Max length of incoming registration we
allow
;defaultexpirey=120             ; Default length of incoming/outoing
registration
;notifymimetype=text/plain      ; Allow overriding of mime type in
NOTIFY
;videosupport=yes               ; Turn on support for SIP video
disallow=all                    ; Disallow all codecs
allow=ulaw                      ; Allow codecs in order of preference
allow=ilbc
allow=alaw


[travel]
type=friend
username=travel
secret=<password>
host=dynamic
nat=yes
context=local
mailbox=4003

Ports in the Firewall

Port 5060 UDP
Ports 16456 - 17456 UDP

RTP Conf

rtpstart=16456
rtpend=17456

-gcc


-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of Steve
Beaumont
Posted At: Sunday, February 29, 2004 4:12 PM
Posted To: Asterisk User Group
Conversation: [Asterisk-Users] Asterisk as a SIP server behind nat,
clients on the outside connecting to Asterisk
Subject: [Asterisk-Users] Asterisk as a SIP server behind nat, clients
on the outside connecting to Asterisk


On the wiki pages it suggests that clients on the outside of NAT can
connect to an Asterisk server behind nat. (option no 3). The note
suggests that this can work with port forwarding and some 'header
mangling magic'.

I have the port forwarding configured however, when I try to connect an
external client through the firewall the client does not correctly
register. The REGISTER message is received, the server responds with
Status 100 trying, followed by Status 407 Proxy Authentication required.
This repeated several times.

I guessing but could this be where the 'header mangling magic' is
required. ? Does anyone know how this magic can be applied.

Many thanks
Steve Beaumont





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