Understanding the Key Differences between ESBCs and Firewalls?

Are you looking to secure VoIP networks against security attacks without compromising call quality in the process? As customers migrate to IP PBXs and unified communications (UC) solutions, understanding the differences between enterprise session border controllers (E-SBCs) and firewalls is critical to avoiding the conflicts that can arise between the two. What are E-SBCs and Read more about Understanding the Key Differences between ESBCs and Firewalls?[…]

How to prevent vulnerabilities threaten VoIP deployments

Data breaches can bring businesses to their knees – disrupting services and tarnishing the reputations of brands. VoIP services aren’t immune to data theft. Just last year, a breach at Secures Technologies compromised 70 million records across 37 states. The company provides phone services to prisons, and the breach raised privacy concerns because it affected Read more about How to prevent vulnerabilities threaten VoIP deployments[…]

How the button bar in SecureCRT can help

A lot of people use SecureCRT as default telnet/ssh program. The developers of SecureCRT has built in some usefull tricks that helps you to automate your work. An example is the Button Bar.   View/Hide the Button Bar SecureCRT’s button bar is a customizable row of buttons you can use for quick access to saved Read more about How the button bar in SecureCRT can help[…]

Howto create SIP resiliency through HA SBCs

This week I read an interesting blog/article about creating SIP resiliency with the use of high-availability Session Border Controllers (SBCs). The blog which I like to share is by Andrew Prokop. It’s important to understand how high availability session border controllers are enabled, and more importantly, under what conditions failover rules are invoked. Any subject Read more about Howto create SIP resiliency through HA SBCs[…]

Conditional Logging – ACME Packet

Since the release of 7.x there have been a number of new enhancements. One of the most useful new features is Advanced Logging. This is like getting debug output in a log file without having to enable full debug. By setting a condition (or set of conditions) the SBC will capture the interesting traffic to Read more about Conditional Logging – ACME Packet[…]

Audiocodes E-SBC: howto remove ;ext= from INVITE header

Sometimes PBX platforms doesn’t like INVITE headers that has an element included that contains ;ext=. In order to remove this aspect from an INVITE the ;ext= element needed to be stripped from the INVITE header using a Message Manipulation on the AudioCodes E-SBC. On an AudioCodes devices running version 6.8 of the firmware, the following Read more about Audiocodes E-SBC: howto remove ;ext= from INVITE header[…]

SBC Routing between Lync and Service Provider

When using a SIP trunk provider it is often recommended that you terminate the SIP signaling and media on an SBC. When you do that there is special configuration required in order to send the traffic to Lync and to send traffic back to the SIP provider when using an Session Border Controller (SBC). This Read more about SBC Routing between Lync and Service Provider[…]

Howto use Network Name Resolution within Wireshark

While capturing packets, you might be annoyed that Wireshark only displays IP addresses. You can convert the IP addresses to domain names yourself, but that isn’t too convenient.   Wireshark can automatically resolve these IP address to domain names, although this feature isn’t enabled by default. When you enable this option, you’ll see domain names Read more about Howto use Network Name Resolution within Wireshark[…]