There are a few things that need to be done on a new Endian Firewall (Community or UTM Appliance) installation in order to get it to play nice with SIP based voice over IP phones. If your phones are registering to an internal VoIP server you should not have any issues, however if your server or SIP provider are external to your network then some settings will need to be modified.
If you have the need for a FTP server on your Gentoo system, Pure-ftp is a good choice. It is a lightweight, standards compliant, and production quality FTP server that is available in portage.
To install pure-ftp do the following:
emerge -avq pure-ftp
The default use flags should be fine for most installations.
The Zoneminder ebuild in the portage tree has been broken for a couple of years now. Here is the process I use to build Zoneminder from source on a Gentoo x86 install:
In a previous guide I discussed how to setup an AsteriskNow server with Polycom phone support. In this guide I will illustrate how to tighten up your server’s security by using the IPTables firewall already installed in the distribution.
ISO images are very easy to manipulate at the command line in Linux. To make an ISO image from a CD or DVD simply insert the disc into the drive and type:
dd if=/dev/cdrom of=filename.iso
This uses the
dd command with the input set to
/dev/cdrom and the output set to
filename.iso. Change these values as necessary. Note that some Linux distros mount the cdrom drive to
To mount an ISO image and read it just as it was a CDROM loaded in the tray do the following:
mkdir /mnt/iso mount -o loop -t iso9660 filename.iso /mnt/iso
The contents of the ISO can now be accessed in
AsteriskNow is a free and powerful turnkey open source PBX system that can be combined with high quality Polycom phones to create an enterprise level VoiP solution. In this guide I will outline the steps needed in order to install AsteriskNow and setup automatic configuration and firmware provisioning for your Polycom SoundPoint IP 335 and 550 SIP phones.
|Polycom SoundPoint IP 335||Polycom SoundPoint IP 550|
The main hard drive seems to be flaky in one of my XCP servers. I decided to use Clonezilla to clone sda to another drive to see if it is in fact the hard drive. After cloning over the drive I found that my LVM storage group VG_XenStorage-xxx was not mounting, and XenCenter was giving off the following error when trying to connect to the server: “This server cannot see any storage”
If you are tired of staring at a black console screen on your Gentoo box you can trick it out a bit using Gensplash. Gensplash or “fbcondecor” allows you to use different background images, fonts and colors to decorate your console so you don’t have the standard black background and white text. It also allows you to have nice boot and shutdown screens. (Think of the boot process and console on the install CD).
If you find your ssh server is getting hit by a lot of brute force attempts from the internet, and want to do something to defend yourself against them then denyhosts is for you! It helps to alleviate some of the stress on your server that occurs when someone or lots of someones are trying to hack their way into your ssh server. Basically the service watches your ssh traffic, and if it sees an IP address hitting a threshold of failed attempts it adds the address to your /etc/hosts.deny file so that it is blocked from future access attempts.
This script uses rdiff-backup to backup files on a Linux host using rysnc. The script then sends an email that notifies of it’s completion. Make sure to install the rdiff-backup package on your distro before running it.