port 5060, was Re: [OT] router ports & DMZ

Colin Law clanlaw at gmail.com
Tue Feb 17 11:01:20 UTC 2015

On 17 February 2015 at 10:35, thufir <hawat.thufir at gmail.com> wrote:
> On Tue, 17 Feb 2015 12:14:20 +0530, Jatin khatri wrote:
>> check you what is your live ip given by your ISP, and scan your live ip
>> from outside may be following[1] can help
>> [1] http://www.t1shopper.com/tools/port-scan/
> Oh, the double NAT is a red herring; sorry for bringing it up.  I just
> wanted to explain why I can't do certain tests.  If I didn't have a
> double NAT situation, that'd be great -- but I do.  For the purposes of
> this thread, no outside connectivity is actually required.
> I'm only interested, at this stage, in SIP to SIP within the network.
> Outside connective isn't a concern right now.
> two boxes:  tleilax and doge.  Tleilax is running Asterisk.
> The router always gives tleilax the same ip address; not sure that this
> really a "static" ip address -- but it's always the same, at least.
> Tleilax uses DHCP to acquire an IP adddress.
> All I want to do, or the hurdle, is for doge to connect to tleilax with a
> softphone.  However, since the router blocks ports, that's not
> possible...right?
> thufir at doge:~$
> thufir at doge:~$ nmap -p 5060
> Starting Nmap 6.46 ( http://nmap.org ) at 2015-02-17 02:31 PST
> Nmap scan report for
> Host is up (0.00045s latency).
> 5060/tcp closed sip
> Nmap done: 1 IP address (1 host up) scanned in 0.04 seconds
> thufir at doge:~$
> so long as the router shows that port as closed, the connection will
> always be refused.  Right?

What are the ip addresses of the machines and the router (LAN and WAN
addresses) and which ports on the router are they connected to?  By
that I mean is one connected to the WAN port or are they both on LAN
ports, or is one connected to the other router, in which case what are
its addresses?


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