[asterisk-users] port 5060 is blocked by ISP

[Hans Witvliet]

On Sun, 2012-07-01 at 13:04 +0530, alok srivastava wrote:
> dear
> i have configured properly asterisk. At the one end i am using x-lite
> soft ph and another end twinkle. call is going properly from both end
> but after picking the phone not able to listen other one.
> when i checked the port 5060 on the asterisk server it is always
> showing closed while i have flushed all the rules from iptables
> (iptables -F)
> 
> PORT     STATE  SERVICE VERSION
> 5060/tcp closed sip
> 
>  telnet localhost 5060 (could not connect)
> 
> regards
> alok

Hi Alok,

telnet is a very crude tool to test with.
Try hping or nmap instead.

Hans