Use the following command to list all open ports and associated programs:
sudo netstat -tulpn
Good sight for hardening your linux servers
http://www.cyberciti.biz/tips/linux-security.html
See all listening ports with which processes using them for linux
December 13th, 2011Add Password / Passphrase to OpenVPN certificate
December 12th, 2011Command used on Vyatta router:-
openssl rsa -in
Link where i got this info from.
http://openvpn.net/archive/openvpn-users/2004-06/msg00175.html
Running minimum amount of services in CentOS
October 15th, 2011This article describes the various services that CentOS runs by default and what all we can disable.
http://anchorite.org/blog/2006/11/13/minimal-services-on-centos-44-mini-howto/
Enabling And Disabling Services During Start Up In GNU/Linux
October 15th, 2011Excellent write up on how to enable and disable services in Linux using the command line and also discusses generic methods (that which are not dependent on the distribution)
http://linuxhelp.blogspot.com/2006/04/enabling-and-disabling-services-during_01.html
Installing Sphinx Search on CentOS 5.6
October 15th, 2011Quick write up on how to install Sphinx on a new installation of CentOS.
-After installing CentOS first thing to do is to update everything. So yum -y upgrade
-Download the Sphinx Tarball and untar it (wget http://sphinxsearch.com/files/sphinx-2.0.1-beta.tar.gz)
-Download the libstemmer library (the download link is in the INSTALL file, wget http://snowball.tartarus.org/dist/libstemmer_c.tgz)
-Make sure yum -y install gcc-c++ kernel-devel
-Also yum -y install mysql-devel
-Then do ./configure –with-libstemmer
-make -j4 install
And that’s it…the installation of Sphinx Search is complete!
Now you need to configure the sphinx.conf file. There is an excellent wiki available at http://sphinxsearch.com/wiki/doku.php
Install VMware Tools on CentOS 5.6
October 15th, 2011yum -y install gcc-c++ kernel-devel
mount /dev/cdrom /mnt
tar -C /tmp -zxvf /mnt/VMwareTools*
umount /mnt
cd /tmp/vmware-tools-distrib
./vmware-install.pl
Taken from this website
http://jameshouse.org/2011/05/25/install-vmware-tools-on-centos-5-6-with-yum/
Setting up SSL or HTTPS on WAMP
August 11th, 2011Excellent write up here.
List SSH command line history with timestamp
August 8th, 2011Found an interesting trick at http://linux.byexamples.com/archives/467/list-command-line-history-with-timestamp/
All you need to do is run export HISTTIMEFORMAT="%F %T " at the command line and you are done! Now run history and you’ll get your history with timestamps!
create a user for SDM through CLI IOS
October 17th, 2010You need three commands to add a user so that someone can log in through the built-in http server on cisco.
First command is :-
ip http server
This enables the http server
Second command is :-
username admin privilege 15 password password
This creates the user admin with password “password” and full priviliges.
Third command is :-
ip http authentication local
This enables the authentication to take place through the above created username and password
That’s it! After this you should be able to log in through the web portal
Search file names in Windows 7
July 21st, 2010One of the many quirks in Windows 7 is the inability to search for file names. By default it searches for file contents. One simple way to JUST look for filenames is to prefix “name:” without quotes to your file name search. So instead of searching for readme.txt, search for name:readme.txt
Hope this helps somebody!