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Hi Guys,<br />
<br />
Basically I need a VoIP server on a DMZ with outgoing SMTP blocked.<br />
<br />
I have placed it on a DMZ and blocked its IP's outgoing SMTP on the router, does the block overwrite the DMZ? or once it is in the DMZ is it completely open?<br />
<br />
I tried to test it through telnet but it did not respond to the normal commands used for testing SMTP over telnet.<br />
<br />
so if anyone can let me know whether or not it would have blocked the SMTP outgoing even though it was in a DMZ, or also how to test SMTP on a linux box that would be great.<br />
<br />
Cheers guys<br />
<br />

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Hi Guys,

Basically I need a VoIP server on a DMZ with outgoing SMTP blocked.

I have placed it on a DMZ and blocked its IP's outgoing SMTP on the router, does the block overwrite the DMZ? or once it is in the DMZ is it completely open?

I tried to test it through telnet but it did not respond to the normal commands used for testing SMTP over telnet.

so if anyone can let me know whether or not it would have blocked the SMTP outgoing even though it was in a DMZ, or also how to test SMTP on a linux box that would be great.

Cheers guys



Test SMTP on Trixbox/Linux box

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

Linux

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

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