Re: Subject: Re: gnugk behind router problem

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Hi Jan,

the firewall is port-forwarding 50000-59999/udp to the gatekeeper. Which
Firewall traversal do you mean?

Thanks for the hint after ReleaseComplete.

Am 01.07.15 11:35 schrieb "Jan Willamowius" unter <jan@xxxxxxxxxxxxxx>:

>Hi,
>
>the RTP errors mean your firewall traversal isn't working and GnuGk
>has trouble sending RTP. The last number in those lines is the Linux
>errno.
>
>You can ignore the errors after the ReleaseComplete.
>
>Regards,
>Jan
>
>-- 
>Jan Willamowius, Founder of the GNU Gatekeeper Project
>EMail  : jan@xxxxxxxxxxxxxx
>Website: http://www.gnugk.org
>Support: http://www.willamowius.com/gnugk-support.html
>
>Relaxed Communications GmbH
>Frahmredder 91
>22393 Hamburg
>Geschäftsführer: Jan Willamowius
>HRB 125261 (Amtsgericht Hamburg)
>USt-IdNr: DE286003584
>
>
>Oliver.Pabst@xxxxxx wrote:
>> Hi together,
>> 
>> I have difficulties to interpret these lines:
>> 
>> 
>> 2015/07/01 10:31:29.002 3 ProxyChannel.cxx(7992) H245 Connected from
>>109.44.3.126:21059 on 192.168.178.155:41002
>> 
>> 2015/07/01 10:31:29.003 3 ProxyChannel.cxx(8025) H245 Connect to
>>192.168.178.166:5678 from 192.168.178.155:41003 successful
>> 
>> 2015/07/01 10:31:29.545 3 ProxyChannel.cxx(11674) Received Input:
>> 
>> 2015/07/01 10:31:31.347 3 ProxyChannel.cxx(9804) RTP
>>10.177.52.56:3232<=>0.0.0.0:50010<=>192.168.178.166:2424 Error(0):
>>Input/output error (12:113)
>> 
>> 2015/07/01 10:31:32.364 3 ProxyChannel.cxx(9804) RTP
>>10.177.52.56:3232<=>0.0.0.0:50010<=>192.168.178.166:2424 Error(0):
>>Input/output error (12:113)
>> 
>> 2015/07/01 10:31:32.870 3 ProxyChannel.cxx(9804) RTP
>>10.177.52.56:3230<=>0.0.0.0:50008<=>192.168.178.166:2422 Error(0):
>>Input/output error (12:113)
>> 
>> 2015/07/01 10:31:33.284 3 ProxyChannel.cxx(1723) Q931s Received:
>>ReleaseComplete CRV=24315 from 109.44.3.126:1578
>> 
>> 2015/07/01 10:31:33.285 1       RasTbl.cxx(5111) CDR|2|90 5e ac 7d 64
>>00 00 1f 13 32 83 00 39 7e df 2d|5|Wed, 01 Jul 2015 10:31:28 +02:00|Wed,
>>01 Jul 2015 10:31:33 +02:00|109.44.3.126:1578|
>>|192.168.178.166:1720|5530_endp|101:url_ID||OpenH323GK;
>> 
>> 
>> 2015/07/01 10:31:33.285 2       gkacct.cxx(964) GKACCT Successfully
>>logged event 2 for call no. 2
>> 
>> 2015/07/01 10:31:33.289 3     yasocket.cxx(789) ProxyRTP(0) Select read
>>error: 10
>> 
>> 2015/07/01 10:31:33.296 3     yasocket.cxx(789) ProxyRTP(0) Select read
>>error: 10
>> 
>> 2015/07/01 10:31:33.296 3     yasocket.cxx(789) ProxyRTP(0) Select read
>>error: 10
>> 
>> 2015/07/01 10:31:33.297 3     yasocket.cxx(789) ProxyRTP(0) Select read
>>error: 10
>> 
>> 2015/07/01 10:31:33.620 2       RasSrv.cxx(174) RAS Read from
>>192.168.178.166:1719
>> 
>> 
>> What is the meaning gf the errors on ProxyChannel.cxx RTP with
>>input/output and then on yasocket.cxx with Select read error: 10 ?
>> 
>> Von: Robert Edeker <idxman01@xxxxxxxxx<mailto:idxman01@xxxxxxxxx>>
>> Antworten an: GNU Gatekeeper Users
>><openh323gk-users@xxxxxxxxxxxxxxxxxxxxx<mailto:openh323gk-users@xxxxxxxxx
>>rceforge.net>>
>> Datum: Mittwoch, 1. Juli 2015 09:25
>> An: GNU Gatekeeper Users
>><openh323gk-users@xxxxxxxxxxxxxxxxxxxxx<mailto:openh323gk-users@xxxxxxxxx
>>rceforge.net>>
>> Betreff: Re:  Subject: Re: gnugk behind router problem
>> 
>> 
>> At this time we're in a similar situation.  Although we have a block of
>>public IP's they all have to go through the firewall.  Otherwise we
>>would need to purchase more equipment and make more network changes than
>>we need to at this time.
>> 
>> To refresh my memory I did test a few calls tonight with a similar
>>setup.  I disabled all port forwarding where endpoint A is, though did
>>ensure the unit was setup in NAT mode.  Worked fine for outbound though
>>naturally I needed the forwarding for inbound (B-to-A calls)
>> 
>> The network in this scenario looks like:
>> 
>> Endpoint A (Polycom QDX6000) -- Residential Router -- [[ internet ]] --
>>corporate firewall -- forward to GNUGK -- Endpoint B
>> 
>> The QDX is set to auto NAT, no fixed ports.  H.460 and H.323 compatible
>>are both unchecked.
>> 
>> Endpoint B (polycom hdx 6000) does not have any special NAT setup since
>>it's behind the gatekeeper and firewall.  Fixed ports are also left
>>unchecked.
>> 
>> Hope that helps.
>> 
>> 
>> On Wed, Jul 1, 2015 at 1:34 AM
>><Oliver.Pabst@xxxxxx<mailto:Oliver.Pabst@xxxxxx>> wrote:
>> Hi Jan and Robert,
>> 
>> Unfortunately, i do only have one ip on the internet side and this one
>>is taken by the router. The router does forward all these ports to the
>>gatekeeper.
>> 
>> I will try to test your config today.
>> 
>> Thanks so far...
>> 
>>   -- op
>> 
>> 
>> 
>> 
>> On 1. Juli 2015 02:14:59 MESZ,
>>openh323gk-users-request@xxxxxxxxxxxxxxxxxxxxx<mailto:openh323gk-users-re
>>quest@xxxxxxxxxxxxxxxxxxxxx> wrote:
>> 
>> Date: Wed, 01 Jul 2015 00:14:36 +0000
>> From: Robert Edeker <idxman01@xxxxxxxxx<mailto:idxman01@xxxxxxxxx>>
>> Subject: Re:  gnugk behind router problem
>> To: GNU Gatekeeper Users
>><openh323gk-users@xxxxxxxxxxxxxxxxxxxxx<mailto:openh323gk-users@xxxxxxxxx
>>rceforge.net>>
>> Message-ID:
>>         
>><CANVo9ar_LyfreACXvM6Sff_bYg5-eHvU5zjD+MDbSrMJmUZzyw@xxxxxxxxxxxxxx<mailt
>>o:CANVo9ar_LyfreACXvM6Sff_bYg5-eHvU5zjD%2BMDbSrMJmUZzyw@xxxxxxxxxxxxxx>>
>> Content-Type: text/plain; charset="utf-8"
>> 
>> Hi Oliver,
>> 
>> I agree with Jan as it does add more complexity and moving parts to the
>> equation.  However, this is the route we took in May/June and it's
>>working
>> well.  [so far]
>> 
>> I'm certainly not an expert on h323 or networking, but you may want to
>>try
>> removing ExternalIP from the config.  gnugk cannot bind to a network
>> adapter with that address which i believe I had issues with as well.
>> 
>> Also, is there anything in front of EndPoint A that would cause issues?
>> 
>> My config is similar, though very minimal for the most part.
>> 
>> Is effectively the below settings, via [ModeSelection] based on IP.
>> 
>> [RoutedMode]
>> GKRouted=1
>> CallSignalPort=1720
>> H245Routed=1
>> AcceptUnregisteredCalls=1
>> AcceptNeighborsCalls=1
>> 
>> [RoutingPolicy]
>> default=explicit,internal,enum,srv,dns,internal,parent,neighbor
>> 
>> [Proxy]
>> Enable=0
>> 
>> ;;;(certain IP's are proxied due to how a neighbor gatekeeper operates,
>> etc..)
>> 
>> Everything else is for routing prefixes to openmcu, logging and
>>accounting.
>> 
>> Though I will say that I did try quite a few other settings especially
>>with
>> hardcoding port ranges.  Ultimately I did not go this route since the
>> firewall was smart enough to handle h323 and forward only the required
>> ports per call.  I didn't want a number of blocks sitting out there in
>>the
>> open being ported in.  You may or may not be able to go this route,
>>check
>> the router.
>> 
>> Only TCP 1720, 1503 and UDP 1719 go in directly. (thinking I can remove
>> 1503 as well)
>> 
>> We may change this down the road and put gnugk to the side of the
>>firewall,
>> but it probably won't be anytime soon.
>> 
>
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