Re: [SR-Users] kamailio.cfg : behind the NAT (listen and advertise) understanding

Question : If kamailio is behind a double NAT setup Internet - (Model-router : NAT 1) - (router - NAT2) - kamailio Could I use this settings ? - For public softphone : listen=udp: IPv4_private: 5060 advertise IPv4_public : 5060 Domain : IPv4_public:5060 - For private softphone on same vlan as kamailio listen=udp: IPv4_private:5066 Domain : IPv4_private:5066 Best Regards, Youssef BOUJRAF Email: yboujraf(a)gmail.com On Sat, Mar 5, 2022 at 1:23 AM Youssef Boujraf &lt;yboujraf(a)gmail.com&gt; wrote: > Dear, > > Then; > > - For public softphone : > > listen=udp: IPv4_private: 5060 advertise IPv4_public : 5060 > > Domain : IPv4_public:5060 > > - For private softphone on same vlan as kamailio > > listen=udp: IPv4_private:5066 > > Domain : IPv4_private:5066 > > > > Best Regards, > > Youssef BOUJRAF > Email: yboujraf(a)gmail.com > > > On Fri, Mar 4, 2022 at 3:00 PM Youssef Boujraf &lt;yboujraf(a)gmail.com&gt; > wrote: > >> Hi Dear >> >> I am trying to understand how "listen" and "advertise" work for sip >> signaling purpose ( corebooks : listen >> <http://www.kamailio.org/wiki/cookbooks/5.4.x/core#listen> and >> advertise ) >> >> Flow : kamailio behind NAT using softphones on private and public >> networks. >> >> - kamailio : >> >> Network : >> >> IPv4_private 192.168.1.6 / IPv4_public >> >> kamailio.cfg : >> >> listen=udp: IPv4_private: 5060 advertise IPv4_public : 5060 >> >> - uac (softphone) : >> >> zoiper, microsip, cisco spa508g >> >> USE CASE : >> >> I 'd like to force all softphone on the same local network to reach >> kamailio through a public ip address. >> >> ??? QUESTION : Do I need to REGISTER on IPv4_private address of Kamailio >> OR REGISTER on IPv4_public address of kamailio or DEFINE another "listen" >> with another PORT WITHOUT "advertise" for softphone on same kamailio >> network ? >> >> listen=udp: IPv4_private: 5060 advertise IPv4_public : 5060 >> listen=udp: IPv4_private: 5066 >> >> >> Do I need to use "kamctl ps" to verify which interface is listening on >> port ? >> >> Thanks in advance >> >> Best Regards, >> >> Youssef BOUJRAF >> Email: yboujraf(a)gmail.com >> >