Archive for February, 2010

Install Ruby 1.8.7 from sources in Centos 5.5

Date: February 22, 2010. Categories: centos, linux and tips. 0 Comments

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Centos 5.5 official repository is rather outdated for today so the latest Ruby available there is 1.8.6. If you need a newer version e.g. 1.8.7 you should install if from sources:

0. Install prerequisites:

sudo yum install gcc zlib zlib-devel

1. Download the latest version of Ruby from project’s FTP:

cd /usr/src/
sudo -s
wget ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.7.tar.gz
tar -xvzf ruby-1.8.7.tar.gz
cd ruby-1.8.7
./configure --enable-pthread
make
make install

2. Check ruby’s version is 1.8.7:

[root@li110-222 ~]# /usr/local/bin/ruby -v
ruby 1.8.7 (2008-05-31 patchlevel 0) [i686-linux]

That’s it!

Cisco GRE example setup

Date: February 18, 2010. Categories: cisco and howtos. 17 Comments

Hosts from LAN1 should be able to access hosts at LAN2 and vice-versa through GRE tunnel between R1 and R2. ISP doesn’t care what networks are behind R1 and R2 so the only way to establish connection between LAN1 and LAN2 is to use VPN, in this example we use GRE.


GRE setup example topology

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 My name is Artem N. (artiomix AT gmail DOT com) and I'm Linux/Unix, Cisco systems engineer. The main idea of Linux Screw is to share relevant knowledge, skills and observations over The Web. Here you can find a lot of information related to different Linux distributions, FreeBSD, IOS as well as a other Open Source around staff. Read more ››