Re: [Sip-implementors] usage of Ephimeral ports
You are welcome. On Tue, Jan 22, 2019 at 5:28 PM Anjan Naik wrote: > Thank you for the clarification. > > On Tue, Jan 22, 2019, 8:33 PM George Vagenas >> Anjan, >> >> The reason behind this is to keep 5060 available for incoming traffic and >> assign a dynamic/ephemeral port for outgoing traffic. >> >> George >> >> On Tue, Jan 22, 2019 at 4:58 PM Anjan Naik >> wrote: >> >>> Thanks George. >>> >>> But my concern is what is the benifit if server use Ephemeral port >>> instead of 5060 for outgoing port ? >>> Could you please explain bit more on this ? >>> >>> Thanks, >>> Anjan >>> >>> On Tue, Jan 22, 2019 at 8:19 PM George Vagenas >>> wrote: >>> Anjan, The use of the ephimeral port is not SIP specific but because of the TCP/IP stack. And even though the outgoing messages will be sent over an ephemeral port, the message is prepared using the standard ports the SIP stack is listening so subsequent requests and responses are able to reach back. Regards George On Tue, Jan 22, 2019 at 4:25 PM Anjan Naik wrote: > HI, > > By default SIP uses port 5060 for incoming and outgoing messages. But > In > some cases, I have seen, the incoming port used by server is 5060 but > when > it sends outgoing packet, it uses Ephimeral port. > > Could someone please explain me , why this Ephimeral ports being used > ? and > what is it benifits.? > > Thanks, > Anjan > ___ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > -- George Vagenas >>> >> >> -- >> George Vagenas >> > -- George Vagenas ___ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
Re: [Sip-implementors] usage of Ephimeral ports
Thank you for the clarification. On Tue, Jan 22, 2019, 8:33 PM George Vagenas Anjan, > > The reason behind this is to keep 5060 available for incoming traffic and > assign a dynamic/ephemeral port for outgoing traffic. > > George > > On Tue, Jan 22, 2019 at 4:58 PM Anjan Naik > wrote: > >> Thanks George. >> >> But my concern is what is the benifit if server use Ephemeral port >> instead of 5060 for outgoing port ? >> Could you please explain bit more on this ? >> >> Thanks, >> Anjan >> >> On Tue, Jan 22, 2019 at 8:19 PM George Vagenas >> wrote: >> >>> Anjan, >>> >>> The use of the ephimeral port is not SIP specific but because of the >>> TCP/IP stack. >>> And even though the outgoing messages will be sent over an ephemeral >>> port, the message is prepared using the standard ports the SIP stack is >>> listening so subsequent requests and responses are able to reach back. >>> >>> Regards >>> George >>> >>> On Tue, Jan 22, 2019 at 4:25 PM Anjan Naik >>> wrote: >>> HI, By default SIP uses port 5060 for incoming and outgoing messages. But In some cases, I have seen, the incoming port used by server is 5060 but when it sends outgoing packet, it uses Ephimeral port. Could someone please explain me , why this Ephimeral ports being used ? and what is it benifits.? Thanks, Anjan ___ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors >>> >>> >>> -- >>> George Vagenas >>> >> > > -- > George Vagenas > ___ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
Re: [Sip-implementors] usage of Ephimeral ports
Anjan, The reason behind this is to keep 5060 available for incoming traffic and assign a dynamic/ephemeral port for outgoing traffic. George On Tue, Jan 22, 2019 at 4:58 PM Anjan Naik wrote: > Thanks George. > > But my concern is what is the benifit if server use Ephemeral port instead > of 5060 for outgoing port ? > Could you please explain bit more on this ? > > Thanks, > Anjan > > On Tue, Jan 22, 2019 at 8:19 PM George Vagenas wrote: > >> Anjan, >> >> The use of the ephimeral port is not SIP specific but because of the >> TCP/IP stack. >> And even though the outgoing messages will be sent over an ephemeral >> port, the message is prepared using the standard ports the SIP stack is >> listening so subsequent requests and responses are able to reach back. >> >> Regards >> George >> >> On Tue, Jan 22, 2019 at 4:25 PM Anjan Naik >> wrote: >> >>> HI, >>> >>> By default SIP uses port 5060 for incoming and outgoing messages. But In >>> some cases, I have seen, the incoming port used by server is 5060 but >>> when >>> it sends outgoing packet, it uses Ephimeral port. >>> >>> Could someone please explain me , why this Ephimeral ports being used ? >>> and >>> what is it benifits.? >>> >>> Thanks, >>> Anjan >>> ___ >>> Sip-implementors mailing list >>> Sip-implementors@lists.cs.columbia.edu >>> https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors >>> >> >> >> -- >> George Vagenas >> > -- George Vagenas ___ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
Re: [Sip-implementors] usage of Ephimeral ports
Thanks George. But my concern is what is the benifit if server use Ephemeral port instead of 5060 for outgoing port ? Could you please explain bit more on this ? Thanks, Anjan On Tue, Jan 22, 2019 at 8:19 PM George Vagenas wrote: > Anjan, > > The use of the ephimeral port is not SIP specific but because of the > TCP/IP stack. > And even though the outgoing messages will be sent over an ephemeral port, > the message is prepared using the standard ports the SIP stack is listening > so subsequent requests and responses are able to reach back. > > Regards > George > > On Tue, Jan 22, 2019 at 4:25 PM Anjan Naik > wrote: > >> HI, >> >> By default SIP uses port 5060 for incoming and outgoing messages. But In >> some cases, I have seen, the incoming port used by server is 5060 but when >> it sends outgoing packet, it uses Ephimeral port. >> >> Could someone please explain me , why this Ephimeral ports being used ? >> and >> what is it benifits.? >> >> Thanks, >> Anjan >> ___ >> Sip-implementors mailing list >> Sip-implementors@lists.cs.columbia.edu >> https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors >> > > > -- > George Vagenas > ___ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
Re: [Sip-implementors] usage of Ephimeral ports
Anjan, The use of the ephimeral port is not SIP specific but because of the TCP/IP stack. And even though the outgoing messages will be sent over an ephemeral port, the message is prepared using the standard ports the SIP stack is listening so subsequent requests and responses are able to reach back. Regards George On Tue, Jan 22, 2019 at 4:25 PM Anjan Naik wrote: > HI, > > By default SIP uses port 5060 for incoming and outgoing messages. But In > some cases, I have seen, the incoming port used by server is 5060 but when > it sends outgoing packet, it uses Ephimeral port. > > Could someone please explain me , why this Ephimeral ports being used ? and > what is it benifits.? > > Thanks, > Anjan > ___ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > -- George Vagenas ___ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
[Sip-implementors] usage of Ephimeral ports
HI, By default SIP uses port 5060 for incoming and outgoing messages. But In some cases, I have seen, the incoming port used by server is 5060 but when it sends outgoing packet, it uses Ephimeral port. Could someone please explain me , why this Ephimeral ports being used ? and what is it benifits.? Thanks, Anjan ___ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
