Recent repeated questions on this topic have inspired a blog post:
http://blog.csrpswitch.com/server-side-nat-traversal-with-kamailio-the-defin...
This is a rough cut, and may be edited or expanded later.
Hi Alex,
Very thorough write up, as always. If only this article was available some time ago when I was putting up an edge proxy, would have saved me weeks of frustration in figuring out all these NAT-related aspects and RFC readings (although such an exercise helps understand the problem to its core).
What you may consider adding to your article is the option of the yet not so popular, but in my opinion the "future of NAT-traveral" practice in IPv4 networks, which is the SIP Outbound mechanism.
Best regards, --Sergiu
On Mon, May 7, 2018 at 7:24 AM, Alex Balashov abalashov@evaristesys.com wrote:
Recent repeated questions on this topic have inspired a blog post:
http://blog.csrpswitch.com/server-side-nat-traversal- with-kamailio-the-definitive-guide/
This is a rough cut, and may be edited or expanded later.
-- Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
On a second thought, SIP Outbound is client-side oriented, so never mind, I guess.
On Mon, May 7, 2018 at 8:49 AM, Sergiu Pojoga pojogas@gmail.com wrote:
Hi Alex,
Very thorough write up, as always. If only this article was available some time ago when I was putting up an edge proxy, would have saved me weeks of frustration in figuring out all these NAT-related aspects and RFC readings (although such an exercise helps understand the problem to its core).
What you may consider adding to your article is the option of the yet not so popular, but in my opinion the "future of NAT-traveral" practice in IPv4 networks, which is the SIP Outbound mechanism.
Best regards, --Sergiu
On Mon, May 7, 2018 at 7:24 AM, Alex Balashov abalashov@evaristesys.com wrote:
Recent repeated questions on this topic have inspired a blog post:
http://blog.csrpswitch.com/server-side-nat-traversal-with- kamailio-the-definitive-guide/
This is a rough cut, and may be edited or expanded later.
-- Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
BTW, my quarrel with add_contact_alias() vs fix_nated_register() comes from the fact that when forwarding registration onward, Asterisk for example chooses to display the peer's host address as Kamailio's address instead of the device's NATed address or even worse the Private address, which isn't that convenient for a few reasons.
Perhaps somebody knows of a workaround.
On Mon, May 7, 2018 at 9:29 AM, Sergiu Pojoga pojogas@gmail.com wrote:
On a second thought, SIP Outbound is client-side oriented, so never mind, I guess.
On Mon, May 7, 2018 at 8:49 AM, Sergiu Pojoga pojogas@gmail.com wrote:
Hi Alex,
Very thorough write up, as always. If only this article was available some time ago when I was putting up an edge proxy, would have saved me weeks of frustration in figuring out all these NAT-related aspects and RFC readings (although such an exercise helps understand the problem to its core).
What you may consider adding to your article is the option of the yet not so popular, but in my opinion the "future of NAT-traveral" practice in IPv4 networks, which is the SIP Outbound mechanism.
Best regards, --Sergiu
On Mon, May 7, 2018 at 7:24 AM, Alex Balashov abalashov@evaristesys.com wrote:
Recent repeated questions on this topic have inspired a blog post:
http://blog.csrpswitch.com/server-side-nat-traversal-with-ka mailio-the-definitive-guide/
This is a rough cut, and may be edited or expanded later.
-- Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
Well, that's not entirely true. Outbound requires significant server-side support.
I just don't see it as adding much to NAT traversal, which works just fine without it. Outbound's value is really in solving a redundancy problem (through really Byzantine and bureaucratic means).
On May 7, 2018 9:29:26 AM EDT, Sergiu Pojoga pojogas@gmail.com wrote:
On a second thought, SIP Outbound is client-side oriented, so never mind, I guess.
On Mon, May 7, 2018 at 8:49 AM, Sergiu Pojoga pojogas@gmail.com wrote:
Hi Alex,
Very thorough write up, as always. If only this article was available
some
time ago when I was putting up an edge proxy, would have saved me
weeks of
frustration in figuring out all these NAT-related aspects and RFC
readings
(although such an exercise helps understand the problem to its core).
What you may consider adding to your article is the option of the yet
not
so popular, but in my opinion the "future of NAT-traveral" practice
in IPv4
networks, which is the SIP Outbound mechanism.
Best regards, --Sergiu
On Mon, May 7, 2018 at 7:24 AM, Alex Balashov
wrote:
Recent repeated questions on this topic have inspired a blog post:
http://blog.csrpswitch.com/server-side-nat-traversal-with- kamailio-the-definitive-guide/
This is a rough cut, and may be edited or expanded later.
-- Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
-- Alex
-- Sent via mobile, please forgive typos and brevity.
Awesome. Thanks KD On Monday, May 7, 2018, 7:27:37 AM EDT, Alex Balashov abalashov@evaristesys.com wrote:
Recent repeated questions on this topic have inspired a blog post:
http://blog.csrpswitch.com/server-side-nat-traversal-with-kamailio-the-defin...
This is a rough cut, and may be edited or expanded later.
-
Alex Balashov -
KamDev Essa -
Sergiu Pojoga