Re: incoming calls using H.460

Jan,

I've done a tcpdump on the linux NAT box (sitting between my HDX [on LAN]
and GnuGK [on internet]). You'll find attached the tcpdump filtered file...

What i can see is the following :
- packet 1 : SCI is sent by Gnugk to NAT (guid
= e05f75dc-6b77-11e4-b8d2-b73ea4855d77)
- packet 2 : SCI is translated by NAT to HDX => only IP/ports fields in
headers are changed, all right
- packet 5 : SCR is sent by HDX to Gnugk => seams ok to me
- packet 6 : SCR is translated by NAT to Gnugk => only IP/ports fields in
headers are changed, all right
- packet 3/4 : TCP SYN from HDX to gnugk:1720 is opened
- packet 7/8 : TCP SYN ACK from gnugk to HDX
- packet 9/10 : TCP ACK from HDX to gnugk
- packet 11/12 : tcp window update (ignore that)
- packet 13/14 : HDX sends a H225 facility undefined (guid
= e05f75dc-6b77-11e4-b8d2-b73ea4855d77)
After 5 seconds, without answer from gnugk, the HDX shuts the TCP stream
(TCP RST).

I'm not an expert of H323 nor H460, but i think gnugk should handles the
"H225 facility undefined" and its guid to relate the TCP 1720 new session
with its SCI/SCR negociation.

Am i wrong with that analysis ?

Best Regards,

Sébastien


2014-11-13 22:38 GMT+01:00 Sébastien Bonnaire <[email protected]>:

> Thanks Jan for your answer.
>
> I'm still disapointed:
> - the test system i used for my trace is behind a regular linux
> masquerading a public IP address
> - the same problem exists when using a huawei TE30, on a public IP,
> forcing activation of H.460.
>
> Do you have another idea ?
>
> Sébastien
>
> 2014-11-13 21:27 GMT+01:00 Jan Willamowius <[email protected]>:
>
>> Hi Sébastien,
>>
>> that behavior is absolutely correct: When using H.460.18 the called
>> endpoint has to open the signaling connection after getting the
>> ServiceControlIndication.
>>
>> A common problem are router or ALG that think they know H,.323, but
>> are only aware of old style call flows (eg. Cisco ASA).
>>
>> Regards,
>> Jan
>>
>> --
>> Jan Willamowius, Founder of the GNU Gatekeeper Project
>> EMail  : [email protected]
>> 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
>>
>>
>> Sébastien Bonnaire wrote:
>> > Hi GnuGK users !
>> >
>> > I'm experiencing a problem with videoendpoints registered to my
>> Gatekeeper :
>> > - When they register with H.460, GnuGK do not forward setup to endpoints
>> > for incoming calls. Outgoing calls works perfectly.
>> > - When they register without H.460, GnuGK does forward setup. Both
>> incoming
>> > and outgoing calls work perfectly.
>> >
>> > I'm using Gatekeeper(GNU) Version(3.7.0), but version 3.4.0 doesn't
>> help...
>> >
>> > His that a bug or a misconfiguration ?
>> > Your help will be welcome.
>> >
>> > Seb
>> >
>> >
>> > following is logs (when endpoint uses H.460) and GNUGK configuration :
>> >
>> > ---
>> > logfile
>> > ---
>> >
>> > 2014/11/13 20:37:23.420 4             RasSrv.cxx(243)   RAS
>>  Receiving
>> > on 81.93.4.29:1719(U)
>> >
>> > 2014/11/13 20:37:23.420 2             RasSrv.cxx(175)   RAS     Read
>> from
>> > A.A.A.NBG:1719
>> >
>> > 2014/11/13 20:37:23.420 3             RasSrv.cxx(252)   RAS
>> >
>> > locationRequest {
>> >
>> >     requestSeqNum = 38073
>> >
>> >     destinationInfo = 1 entries {
>> >
>> >       [0]=dialedDigits "100000990"
>> >
>> >     }
>> >
>> >     nonStandardData = {
>> >
>> >       nonStandardIdentifier = object 1.3.6.1.4.1.903
>> >
>> >       data =  2 octets {
>> >
>> >         31 30                                              10
>> >
>> >       }
>> >
>> >     }
>> >
>> > […]
>> >
>> > 2014/11/13 20:37:23.420 5                job.cxx(338)   JOB     Worker
>> > threads: 23 total - 23 busy, 0 idle
>> >
>> > 2014/11/13 20:37:23.420 5                job.cxx(180)   JOB     Starting
>> > Job LRQ at Worker thread 140228487673600
>> >
>> > 2014/11/13 20:37:23.420 1             RasSrv.cxx(383)   RAS     LRQ
>> > Received from A.A.A.NBG:1719
>> >
>> > 2014/11/13 20:37:23.421 5              Routing.h(243)   ROUTING Checking
>> > policy Sql for the request LRQ 38073
>> >
>> > 2014/11/13 20:37:23.421 5              gksql.cxx(318)   Sql
>>  Executing
>> > query: select field1,field2 from transforms where dateendofservice >
>> now()
>> > and calledalias='100000990' and callingalias in ('any','71660101')
>> >
>> > 2014/11/13 20:37:23.422 3            Routing.cxx(2030)  Sql: query
>> returned
>> > no rows
>> >
>> > 2014/11/13 20:37:23.422 5              Routing.h(243)   ROUTING Checking
>> > policy Explicit for the request LRQ 38073
>> >
>> > 2014/11/13 20:37:23.422 5              Routing.h(243)   ROUTING Checking
>> > policy Internal for the request LRQ 38073
>> >
>> > 2014/11/13 20:37:23.423 4             RasTbl.cxx(1966)  Alias match for
>> EP
>> > B.B.B.ENDP:1719
>> >
>> > 2014/11/13 20:37:23.423 5              Routing.h(246)   ROUTING Policy
>> > Internal applied to the request LRQ 38073
>> >
>> > 2014/11/13 20:37:23.423 2             RasSrv.cxx(422)
>> > LCF|A.A.A.NBG|4872_endp|100000990:dialedDigits
>> >
>> > 2014/11/13 20:37:23.423 3             RasSrv.cxx(264)   RAS     Send to
>> > A.A.A.NBG:1719
>> >
>> > locationConfirm {
>> >
>> >     requestSeqNum = 38073
>> >
>> >     callSignalAddress = ipAddress {
>> >
>> >       ip =  4 octets {
>> >
>> > […]
>> >
>> >       }
>> >
>> >       port = 1720
>> >
>> >     }
>> >
>> >     rasAddress = ipAddress {
>> >
>> >       ip =  4 octets {
>> >
>> > […]
>> >
>> >       }
>> >
>> >       port = 1719
>> >
>> >     }
>> >
>> >   }
>> >
>> > 2014/11/13 20:37:23.423 5             RasSrv.cxx(276)   RAS     Sent
>> > Successful
>> >
>> > 2014/11/13 20:37:23.423 5                job.cxx(388)   JOB     Job LRQ
>> > deleted
>> >
>> > 2014/11/13 20:37:23.423 5                job.cxx(378)   JOB     Worker
>> > threads: 23 total - 22 busy, 1 idle
>> >
>> > 2014/11/13 20:37:23.461 4           yasocket.cxx(1151)  TCPSrv  Accept
>> > request on 81.93.4.29:1720
>> >
>> > 2014/11/13 20:37:23.461 4           yasocket.cxx(1158)  TCPSrv  current
>> > cps=0 calls in interval=0
>> >
>> > 2014/11/13 20:37:23.461 5                job.cxx(338)   JOB     Worker
>> > threads: 23 total - 23 busy, 0 idle
>> >
>> > 2014/11/13 20:37:23.461 5                job.cxx(180)   JOB     Starting
>> > Job Acceptor at Worker thread 140228487673600
>> >
>> > 2014/11/13 20:37:23.461 5       ProxyChannel.cxx(1250)  Q931s   Reading
>> > from A.A.A.NBG:53476
>> >
>> > 2014/11/13 20:37:23.462 3       ProxyChannel.cxx(1753)  Q931s
>>  Received:
>> > Setup CRV=13586 from A.A.A.NBG:53476
>> >
>> > 2014/11/13 20:37:23.463 4       ProxyChannel.cxx(1685)  Q931
>> Received: {
>> >
>> >   q931pdu = {
>> >
>> >     protocolDiscriminator = 8
>> >
>> >     callReference = 13586
>> >
>> >     from = originator
>> >
>> >     messageType = Setup
>> >
>> >     IE: Bearer-Capability = {
>> >
>> >       88 18 8c a5                                        ....
>> >
>> >     }
>> >
>> > […]
>> >
>> > 2014/11/13 20:37:23.463 4       ProxyChannel.cxx(3502)  Q931s
>>  GWRewrite
>> > source for A.A.A.NBG:53476: neighbor or explicit IP
>> >
>> > 2014/11/13 20:37:23.464 4       ProxyChannel.cxx(3590)  Q931
>> Gatekeeper
>> > generated CallProceeding
>> >
>> > 2014/11/13 20:37:23.464 5       ProxyChannel.cxx(1685)  Q931    Send to
>> > A.A.A.NBG:53476 {
>> >
>> >   q931pdu = {
>> >
>> >     protocolDiscriminator = 8
>> >
>> >     callReference = 46354
>> >
>> >     from = destination
>> >
>> >     messageType = CallProceeding
>> >
>> > […]
>> >
>> > }
>> >
>> > 2014/11/13 20:37:23.464 3             gkauth.cxx(1188)  GKAUTH  default
>> > Setup check ok
>> >
>> > 2014/11/13 20:37:23.464 5            Routing.cxx(260)   ROUTING Checking
>> > policy Sql for request Setup CRV=13586
>> >
>> > 2014/11/13 20:37:23.464 5              gksql.cxx(318)   Sql
>>  Executing
>> > query: select field1,field2 from transforms where dateendofservice >
>> now()
>> > and calledalias='100000990' and callingalias in ('any','71660101')
>> >
>> > 2014/11/13 20:37:23.466 3            Routing.cxx(2030)  Sql: query
>> returned
>> > no rows
>> >
>> > 2014/11/13 20:37:23.466 5            Routing.cxx(260)   ROUTING Checking
>> > policy Explicit for request Setup CRV=13586
>> >
>> > 2014/11/13 20:37:23.466 5            Routing.cxx(260)   ROUTING Checking
>> > policy Internal for request Setup CRV=13586
>> >
>> > 2014/11/13 20:37:23.467 4             RasTbl.cxx(1966)  Alias match for
>> EP
>> > B.B.B.ENDP:1719
>> >
>> > 2014/11/13 20:37:23.467 5            Routing.cxx(263)   ROUTING Policy
>> > Internal applied to the request Setup CRV=13586
>> >
>> > 2014/11/13 20:37:23.467 4       ProxyChannel.cxx(3988)  Q931s   Source
>> > address A.A.A.MCU peer address A.A.A.NBG caller is behind NAT
>> >
>> > 2014/11/13 20:37:23.467 2             RasTbl.cxx(4696)
>> CallTable::Insert(CALL)
>> > Call No. 5, total sessions : 1
>> >
>> > 2014/11/13 20:37:23.467 5              gksql.cxx(318)   SQLAcct
>> Executing
>> > query: INSERT INTO cdr (id, h323id, acctsessionid, h323confid, gkip,
>> gkid,
>> > callingstationip, callingstationid, calledstationip, calledstationid,
>> > setuptime, acctstarttime, acctstartdelay, acctupdatetime) VALUES
>> (DEFAULT,
>> > '71660101', '5461364a00000005', '64 d7 56 56 e4 47 00 1f 06 99 5e 3f 0c
>> 55
>> > 6a 5b', '81.93.4.29', 'MADVISIO-GK29', NULLIF('A.A.A.NBG', '')::INET,
>> > '71660101', NULLIF('B.B.B.ENDP', '')::INET, '100000990',
>> > NULLIF('20:37:23.000 CET Thu Nov 13 2014', '')::TIMESTAMP(0) WITH TIME
>> > ZONE, now(), 0, now())
>> >
>> > 2014/11/13 20:37:23.571 3             gkacct.cxx(928)   GKACCT  SQLAcct
>> > logged event 1 for call no. 5
>> >
>> > 2014/11/13 20:37:23.571 2             gkacct.cxx(964)   GKACCT
>> Successfully
>> > logged event 1 for call no. 5
>> >
>> > 2014/11/13 20:37:23.571 4       ProxyChannel.cxx(4245)  Q931s
>>  GWRewrite
>> > source for A.A.A.NBG:53476: setup H323 ID or E164
>> >
>> > 2014/11/13 20:37:23.571 4       ProxyChannel.cxx(7687)  Q931s   Set
>> Called
>> > Numbering Plan=1 TypeOfNumber=1
>> >
>> > 2014/11/13 20:37:23.571 4       ProxyChannel.cxx(7715)  Q931s   Set
>> Calling
>> > Numbering Plan 1 Type Of Number 2
>> >
>> > 2014/11/13 20:37:23.571 3       ProxyChannel.cxx(4360)  GK      Call 5
>> > proxy enabled (H.460.18/.19)
>> >
>> > 2014/11/13 20:37:23.572 3             RasSrv.cxx(264)   RAS     Send to
>> > B.B.B.ENDP:1719
>> >
>> > serviceControlIndication {
>> >
>> >     requestSeqNum = 10
>> >
>> >     serviceControl = 1 entries {
>> >
>> >       [0]={
>> >
>> >         sessionId = 0
>> >
>> >         reason = open <<null>>
>> >
>> >       }
>> >
>> >     }
>> >
>> >     genericData = 1 entries {
>> >
>> >       [0]={
>> >
>> >         id = standard 18
>> >
>> >         parameters = 1 entries {
>> >
>> >           [0]={
>> >
>> >             id = standard 1
>> >
>> >             content = raw  24 octets {
>> >
>> >               00 51 5d 04 1d 06 b8 00  5b be e2 99 6b 66 11 e4
>> > .Q].....[...kf..
>> >
>> >               b8 d2 b7 3e a4 85 5d 77
>> ...>..]w
>> >
>> >             }
>> >
>> >           }
>> >
>> >         }
>> >
>> >       }
>> >
>> >     }
>> >
>> >   }
>> >
>> > 2014/11/13 20:37:23.572 5             RasSrv.cxx(276)   RAS     Sent
>> > Successful
>> >
>> > 2014/11/13 20:37:23.572 5           yasocket.cxx(991)   ProxyH(4)
>>  Total
>> > sockets: 1
>> >
>> > 2014/11/13 20:37:23.572 5                job.cxx(388)   JOB     Job
>> > Acceptor deleted
>> >
>> > 2014/11/13 20:37:23.572 5                job.cxx(378)   JOB     Worker
>> > threads: 23 total - 22 busy, 1 idle
>> >
>> > 2014/11/13 20:37:23.581 4             RasSrv.cxx(243)   RAS
>>  Receiving
>> > on 81.93.4.29:1719(U)
>> >
>> > 2014/11/13 20:37:23.581 2             RasSrv.cxx(175)   RAS     Read
>> from
>> > B.B.B.ENDP:1719
>> >
>> > 2014/11/13 20:37:23.581 3             RasSrv.cxx(252)   RAS
>> >
>> > serviceControlResponse {
>> >
>> >     requestSeqNum = 10
>> >
>> >     cryptoTokens = 1 entries {
>> >
>> >       [0]=cryptoEPPwdHash {
>> >
>> >         alias = h323_ID  10 characters {
>> >
>> >           0031 0030 0030 0030 0030 0030 0039 0039   10000099
>> >
>> >           0030 0000                                 0
>> >
>> >         }
>> >
>> >         timeStamp = 1102520409
>> >
>> >         token = {
>> >
>> >           algorithmOID = 1.2.840.113549.2.5
>> >
>> >           paramS = {
>> >
>> >           }
>> >
>> >           hash = Hex:  5d 02 25 b0 ff 1f 73 8a  b2 4c ca 47 25 04 d2 3a
>> >
>> >         }
>> >
>> >       }
>> >
>> >     }
>> >
>> >   }
>> >
>> > 2014/11/13 20:37:23.581 5                job.cxx(338)   JOB     Worker
>> > threads: 23 total - 23 busy, 0 idle
>> >
>> > 2014/11/13 20:37:23.581 5                job.cxx(180)   JOB     Starting
>> > Job SCR at Worker thread 140228487673600
>> >
>> > 2014/11/13 20:37:23.581 1             RasSrv.cxx(383)   RAS     SCR
>> > Received from B.B.B.ENDP:1719
>> >
>> > 2014/11/13 20:37:23.581 5                job.cxx(388)   JOB     Job SCR
>> > deleted
>> >
>> > 2014/11/13 20:37:23.581 5                job.cxx(378)   JOB     Worker
>> > threads: 23 total - 22 busy, 1 idle
>> >
>> >
>> >
>> >
>> > ---
>> > gatekeeper.ini
>> > ---
>> > [Gatekeeper::Main]
>> > Fortytwo=42
>> > Name=myGK
>> > Home=x.x.x.x
>> > StatusPort=7000
>> > TimeToLive=300
>> > CompareAliasType=0
>> > CompareAliasCase=0
>> > EndpointSignalPort=1720
>> > TraceLevel=5
>> >
>> > [Logfile]
>> > Filename=/var/log/log_gnugk.log
>> > Rotate=Daily
>> > RotateTime=04:00
>> >
>> > [GkStatus::Auth]
>> > rule=regex
>> > regex=^(1\.2\.3\.[0-9]+)
>> >
>> > [Gatekeeper::Auth]
>> > SQLPasswordAuth=alternative;RRQ
>> > default=allow
>> >
>> > [SQLPasswordAuth]
>> > Driver=PostgreSQL
>> > ...
>> >
>> > [Gatekeeper::Acct]
>> > SQLAcct=optional;start,connect,update,stop
>> > FileAcct=required;stop
>> >
>> > [FileAcct]
>> > ...
>> >
>> > [SQLAcct]
>> > ...
>> >
>> > [RasSrv::Neighbors]
>> > alpha=Generic
>> > beta=Generic
>> >
>> > [Neighbor::alpha]
>> > Dynamic=0
>> > GatekeeperIdentifier=alpha
>> > Host=y.y.y.1
>> > SendPrefixes=20
>> > AcceptPrefixes=99
>> > ForwardLRQ=depends
>> >
>> > [Neighbor::beta]
>> > Dynamic=0
>> > GatekeeperIdentifier=beta
>> > Host=y.y.y.2
>> > SendPrefixes=10
>> > AcceptPrefixes=99
>> > ForwardLRQ=depends
>> >
>> > [RoutedMode]
>> > GKRouted=1
>> > AcceptNeighborsCalls=1
>> > EnableH46017=1
>> > EnableH46018=1
>> > H46018NoNAT=1
>> > Q931PortRange=30000-39999
>> > H245PortRange=40000-49999
>> > CallSignalPort=1720
>> > H245Routed=1
>> > CallSignalHandlerNumber=10
>> > RtpHandlerNumber=8
>> > AcceptUnregisteredCalls=1
>> > TCPKeepAlive=1
>> > CpsLimit=10
>> > CpsCheckInterval=1
>> > SupportNATedEndpoints=1
>> > TreatUnregisteredNAT=1
>> > GenerateCallProceeding=1
>> > ;H4502EmulatorTransferMethod=Reroute
>> >
>> > [Proxy]
>> > Enable=1
>> > ProxyForNAT=1
>> > ProxyForSameNAT=0
>> > T120PortRange=50000-50999
>> > RTPPortRange=51000-58999
>> > RTPMultiplexing=1
>> > RTPMultiplexPort=59000
>> > RTCPMultiplexPort=59999
>> >
>> > [RoutingPolicy]
>> > Default=sql,explicit,internal,parent,neighbor,srv,dns,catchall
>> >
>> > [Routing::Sql]
>> > ...
>> >
>> > [ModeSelection]
>> > 1.2.3.0/24=PROXY,PROXY
>> >
>> > [Routing::CatchAll]
>> > CatchAllIP=2.3.4.5
>> > ---
>>
>>
>>
>>
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>>
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>
>
>

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