[SR-Users] Kamailio 4.4 + rtpproxy behind the NAT (debian stretch 9.13)

[Youssef Boujraf]

Dear Henning,

I need to move my existing installation working fine on VMWare and public ip without NAT to a new infra doesn’t providing direct public ip. NAT is mandatory.

Yes after my move to new infra. I will migrate to latest framework.

Just now, I compiled the latest rtpproxy and will check if wit -A parameter and in kamailio add listen with advertise will fix my issue.

Any help of the rtpproxy and kamailio config will help me so much

Best regards
Boujraf Youssef

> On 1 Oct 2021, at 15:08, Henning Westerholt <hw at skalatan.de> wrote:
> 
> 
> Hello Youssef,
>  
> before investing a lot of time into this old version, I would suggest that you update:
>  
> operating system (e.g. at least to Debian Buster)
> Kamailio (at least 5.4.x)
> And also rtpproxy, consider also rtpengine which is much more flexible especially for NAT scenarios
>  
> In the newer kamailio default cfg you find also support for rtpengine, it can be easily enabled with a define.
>  
> Cheers,
>  
> Henning
>  
> From: sr-users <sr-users-bounces at lists.kamailio.org> On Behalf Of Youssef Boujraf
> Sent: Friday, October 1, 2021 1:01 PM
> To: sr-users at lists.kamailio.org
> Cc: Contacts <yboujraf at gmail.com>
> Subject: [SR-Users] Kamailio 4.4 + rtpproxy behind the NAT (debian stretch 9.13)
>  
> Dear,
>  
> I am testing the kakamilio 4.4 with rtpproxy on Debian stretch 9.13
> I have installed the packages
> ·         apt-get install kamailio and rtpproxy.
> ·         kamailio 4.4
> ·         rtpproxy Basic version: 20040107
>  
> My version of RTPPROXY doesn't have the -A parameter so that means without advertising there is no way to work behind NAT? That is what I have understood after spending one week on forums. Thanks if somebody could confirm otherwise, which way I need to go to figure out my issue?
>  
> # rtpproxy -v
> Basic version: 20040107
> Extension 20050322: Support for multiple RTP streams and MOH
> Extension 20060704: Support for extra parameter in the V command
> Extension 20071116: Support for RTP re-packetization
> Extension 20071218: Support for forking (copying) RTP stream
> Extension 20080403: Support for RTP statistics querying
> Extension 20081102: Support for setting codecs in the update/lookup command
> Extension 20081224: Support for session timeout notifications
>  
> # rtpproxy -help
> rtpproxy: invalid option -- 'h'
> usage: rtpproxy [-2fvFiPa] [-l addr1[/addr2]] [-6 addr1[/addr2]] [-s path]
>         [-t tos] [-r rdir [-S sdir]] [-T ttl] [-L nfiles] [-m port_min]
>         [-M port_max] [-u uname[:gname]] [-n timeout_socket] [-d log_level[:log_facility]]
> #
>  
> /etc/hosts
>  
> 127.0.0.1       localhost
> 127.0.1.1       sip.dom.xx sip
> 192.168.1.19    sip.dom.xx sip
> PUBLIC_IP   sip.dom.xx sip
> # The following lines are desirable for IPv6 capable hosts
> ::1     localhost ip6-localhost ip6-loopback
> ff02::1 ip6-allnodes
> ff02::2 ip6-allrouters
>  
> /etc/kamailio/kamailio.cfg
> kamailio.config
> #!define PUBLIC_IP "xxx.xxx.xxx.xxx"
> #!define PRIVATE_IP "192.168.1.19"
> #!define PRIVATE_NET "192.168.1.0/24“
> listen=udp:PRIVATE_IP:5060 advertise PUBLIC_IP:5060 
>  
> #!ifdef WITH_NAT
> # ----- rtpproxy params -----
> modparam("rtpproxy", "rtpproxy_sock", "udp:PRIVATE_IP:7722")
> 
> # ----- nathelper params -----
> modparam("nathelper", "natping_interval", 30)
> modparam("nathelper", "ping_nated_only", 1)
> modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)
> modparam("nathelper", "sipping_from", "sip:pinger at kamailio.org")
>  
> Etc/default/rtpproxy
>  
> PRIVATE_IP=192.168.1.19
> PUBLIC_IP=xxx.xxx.xxx.xxx
> rtpport_min= 10000
> rtpport_max=20000
> syslog=DBUG:LOG_LOCAL5
> #Defaults for rtpproxy
> #The control socket.
> #CONTROL_SOCK="unix:/var/run/rtpproxy/rtpproxy.sock"
> #To listen on an UDP socket, uncomment this line:
> #CONTROL_SOCK=udp:127.0.0.1:7722
> #Additional options that are passed to the daemon.
> EXTRA_OPTS="-l $PRIVATE_IP/$PUBLIC_IP ="-s $PRIVATE_IP:7222 -m $rtpport_min -M $rtpport_max -d $syslog"`
>  
> Thanks if you could route me to the right way.
>  
> Best regards
> 
> Yboujraf
> Email: yboujraf at gmail.com
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