Hi Jun,
Our experience shows that SIP ALGs on home/SoHo routers almost always
break interoperability with sipXecs, therefore we very strongly
recommend that you turn it off on your netgear. Some people had similar
issues involving Netgear and things started working after the SIP ALG
got disabled (some Netgear products calls this setting SPI (stateful
packet inspection)). As far as validating your remote worker
configuration on sipXecs goes, please refer to the following article and
please make sure that all the steps are followed:
http://sipx-wiki.calivia.com/index.php/Configuring_remote_workers_cheats
heet
Cheers,
bob
________________________________
From: sipx-users-boun...@list.sipfoundry.org
[mailto:sipx-users-boun...@list.sipfoundry.org] On Behalf Of jun,wen
Sent: Sunday, June 28, 2009 11:18 PM
To: 'Alberto'; 'Andreas (Around the Clock Information Systems)'
Cc: sipx-users@list.sipfoundry.org
Subject: Re: [sipx-users] NETGEAR ProSafe VPN Firewall model
FVX538v2
Hi, Andreas and Alberto,
I am also working on Netgear FVX538v2 with SIPX now and I'd like
to share with you what I found during the test.
Last weekend I updated its firmware to latest 3.0.5-27 which
supports SIP/ALG now ( under "Security" -> "Firewall" -> "Advanced" ).
My remote worker sip phone in internet can well register to SIPX and can
dial&listen the announcement of auto-attendant.
Whereas, when I dialed another sip phone within same intranet of
SIPX or another remote worker in internet, after hearing the first ring
back tone, there is no audio from called party.
I have no idea if my configuration of remote work in SIPX or the
firewall settings in FVX538 are well figured out, or if we need
sipxbridge in this scenario.
Can we swap these info to each other ?
Regards
Jun
________________________________
From: sipx-users-boun...@list.sipfoundry.org
[mailto:sipx-users-boun...@list.sipfoundry.org] On Behalf Of Alberto
Sent: Saturday, June 27, 2009 6:14 PM
To: Andreas (Around the Clock Information Systems)
Cc: sipx-users@list.sipfoundry.org
Subject: Re: [sipx-users] NETGEAR ProSafe VPN Firewall model
FVX538v2
Hi Andreas,
I'm using a similar router from Netgear SRXN3205. It's a newer
model than FVX538v2. Firmwares are slightly older than yours. Last
public version is 3.0.3-18. I know there are some new in beta. There is
no SIP ALG support in this firmware yet. It does have a single ethernet
WAN and I'm using a Netgear DM111p as ADSL2+ broadband modem.
I have available for testing FVS338, FVS336G and DGFV338, but
did not have experiences with sipxecs with them.
With sipXecs I'm currently using quite a lot sipxbridge to
register few accounts with my ITSP. I'm not using the remote worker
function. I did not test it at all.
I'm having just one major issue with SRXN3205: it seems to
behave erratically with udp traffic after a broadband failure. I have a
quite noisy line that became quite sensitive the day I upgraded my ISP
from ADSL to ADSL2+. It's not too bad actually but occasionally the
modem drop the line obtaining a new IP. While this is not interesting if
you're not is such situation I found that SRXN3205 is not correctly
sending udp traffic after the line is up again. I could reproduce this
issue multiple times just switching of my broadband modem. This happen
only with sipxbridge in my case. It keeps an open udp channel from the
time it started for performance reasons. The router does something
illegal after the line is again fully operational: it send the udp
packet on the Internet with source address my LAN 192.168.x.x sipxbridge
IP instead of the public IP received from the ISP. Basically it stops
doing its NAT function for UDP channels established before a broadband
line drop. Packet with such source address are for sure dropped from the
first router out there and sipxbridge will not receive responses to its
requests.
Don't really know if it is a specific SRXN3205 issue or it could
be generalized to all Netgear Prosafe with at least the same firmware
revision.
I could spot the issue doing packet captures on the router on
the WAN side.
Regards
Alberto
Andreas (Around the Clock Information Systems) ha scritto:
Anyone out there in sipXecs land currently using a
NETGEAR ProSafe VPN
Firewall model FVX538v2 between their sipX PBX and the
Internet? If so, I'd
like to swap configuration examples and lessons learned.
Thanks,
Andreas
Systems Engineer
Around the Clock Information Systems
-----Original Message-----
From: Andreas
Sent: Tuesday, June 23, 2009 5:19 PM
To: 'Robert Joly'
Subject: RE: [sipx-users] I'm compiling a list of
routers. . .
Dear Mr. Joly,
We are currently using a NETGEAR ProSafe VPN
Firewall model
FVX538v2. Last month NETGEAR came out with updated
firmware (3.0.5-24)
which claims to have added SIP Application Layer Gateway
support. Have you
by any chance heard any PRO's or CON's or otherwise with
regard to the
FVX538v2 and any interoperability problems with sipXecs?
http://kb.netgear.com/app/answers/detail/a_id/8100
Thanks in advance,
Andreas
Systems Engineer
Around the Clock Information Systems
-----Original Message-----
From: sipx-users-boun...@list.sipfoundry.org
[mailto:sipx-users-boun...@list.sipfoundry.org] On
Behalf Of Robert Joly
Sent: Tuesday, June 23, 2009 9:12 AM
To: an...@iguanait.com; Scott Lawrence
Cc: sipx-users@list.sipfoundry.org
Subject: Re: [sipx-users] [Bulk] Re: Remote worker
registration problem
Thank you, Scott!
I informed this user to check this router
settings and he has
found out some settings for sip on his router.
After
disabling these sip settings everything is ok
and he is able
to register :)
May I ask what kind of router you are using? I'm
compiling a list of
routers that have SIP settings that interfere with sipX.
Thank you.
8<
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