<div>
The ASA can most likely be ruled out as an issue, packet tracer confirms that the traffic is being allowed through.<br />
<br />
That being said, I'm still unable to connect the phone to the PBX. &nbsp;The built-in firewall and SELinux are both disabled on my PBX too.
</div>


The ASA can most likely be ruled out as an issue, packet tracer confirms that the traffic is being allowed through.

That being said, I'm still unable to connect the phone to the PBX.  The built-in firewall and SELinux are both disabled on my PBX too.

<div>
do you get any logs on your asterisk server ?<br />

</div>


do you get any logs on your asterisk server ?


<div>
<div class="content wysiwyg-content">
Hello all,<br />
<br />
I need to allow about a dozen remote employees to access our Asterisk server with their Polycom 450's without the use of VPNs.<br />
<br />
I've moved the * server to the DMZ interface on our ASA, and have assigned it a public IP.<br />
<br />
In sip.conf I've added externip = xx.xx.xx.xx <br />
<br />
On the ASA, I've opened up the following ports to the * server:<br />
5060-5082 UDP<br />
10001-20000 UDP<br />
and<br />
69 UDP (for TFTP access).<br />
<br />
I cannot get the phones to connect to the server. &nbsp;I've also tried/failed connecting X-Lite as well.<br />
<br />
Any help is greatly appreciated.
</div>
</div>


Hello all,

I need to allow about a dozen remote employees to access our Asterisk server with their Polycom 450's without the use of VPNs.

I've moved the * server to the DMZ interface on our ASA, and have assigned it a public IP.

In sip.conf I've added externip = xx.xx.xx.xx 

On the ASA, I've opened up the following ports to the * server:
5060-5082 UDP
10001-20000 UDP
and
69 UDP (for TFTP access).

I cannot get the phones to connect to the server.  I've also tried/failed connecting X-Lite as well.

Any help is greatly appreciated.

Connect to Asterisk from WAN (Behind Cisco ASA)

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

IP Telephony

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).

Voice Over IP

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).