Easy Hosted/Cloud PBX Migrations Leveraging DNS

Moving from one hosted pbx to another can be a pain in the neck unless you leverage this simple DNS trick.  When your hosted pbx is provisioned you will be provided critical pieces of information.  The host name of the feature server and the host name of the registration server.  For example: feature server: fs42.cloudpbx.com ...

Securing an EdgeMarc by replacing NTPD with NTPdate.

Securing an EdgeMarc by replacing NTPD with NTPdate.
Your EdgeMarc may be part of one of the largest DDOS attacks in the history of the Internet. Having any weird bandwidth issues or packet loss recently?  Blaming it on your carrier?  Well think again, the Internet is being scanned by thousands of script kiddies looking for NTP servers to use in NTP reflection DDOS attacks. I guarantee ...

VoIP LAN Management without PPTP VPN using SSH Tunneling with an EdgeMarc 5300

Managing remote VoIP networks is easy when you have a PPTP VPN like you do with  Edge Water Networks EdgeMarc 4550.  However if you have a larger location with the EdgeMarc 5300 you might not realize until too late that PPTP is no longer an option.  The EdgeMarc 5300 only has one type of VPN ...

Automating Aastra Phone Reboots 3

Automating Aastra phone reboots is very useful when migrating backend PBX servers. Once the backend server migration has completed making sure all the phones have the latest credentials is critical to a smooth move. Option 66 in DHCP is convenient way to update many phones at once but it requires a DHCP timeout or a ...

Resetting the EdgeMarc Web GUI Password from the CLI

The EdgeMarc QoS routers have different passwords for the SSH/Telnet CLI and the Web GUI. If you ever loose your Web GUI password it can be easily reset if you can login to the CLI. Log into the EdgeMarc with SSH or Telnet and execute this command from the bash prompt. cp /etc/default/guipasswd /etc/config/guipasswd The ...

Resolving Bandwidth Utilization Issues on an EdgeMarc Using TCPDump to Find Top Talkers

Resolving Bandwidth Utilization Issues on an EdgeMarc is hard.   The web management GUI has no tools other than Ping and Traceroute.  And  there is nothing worse for voice quality on a VoIP PBX then a over utilized circuit.  If YouTube, BitTorrent Sync, Pandora, offsite backup or VPN is saturating the pipe there is only ...

Network Bandwidth Utilization on an EdgeMarc

Network Bandwidth Utlization on an EdgeMarc is not a builtin feature. Most network devices allow you to check bandwidth utliztion from the web gui. But even with this missing feature we can get the information we need from an EdgeMarc utlizing this tutorial. We will create a script that polls the linux /sys/class/net/ethx/statistics/(t/r)x_bytes file once ...

Restarting the EdgeMarc Web Server Without Rebooting

Restarting the EdgeMarc Web Server Without Rebooting
Restarting the EdgeMarc Web Server is a simple process.  This tuorial will walk you though restarting the EdgeMarc web sever without rebooting. You will need to do this if the web interface stops responding or is acting very slow. The knee jerk reaction is to just reboot the EdgeMarc but that will take down the ...

MTS D-Link Admin Password Dictionary Attack 16

MTS D-Link Admin Password Dictionary Attack
Here is a simple dictionary based password crack for D-Link routers. Have you ever forgot your admin password and did not want to do a factory reset? If so you may want to try out this cracker. I have tested it on a DIR-645 and a DIR-655. If it does not work on your D-Link ...

Upgrading EdgeMarc 4550 Firmware

Upgrading EdgeMarc 4550 Firmware
Upgrading EdgeMarc 4550 Firmware to the latest version is simple. But in this tutorial I will show you how to upgrade or downgrade the EdgeMarc 4550 firmware to any version you choose. What is the latest EdgeMarc 4550 VOS Firmware Version? You can find the latest version of the EdgeMarc 4550 VOS Firmware in the ...