How To allow access to AIM, Yahoo, Gtalk and MSN Messenger through Squid Proxy ? To proxy and to allow AIM, MSN, Yahoo and GTalk Instant Messenger traffic via with Squid, change/add the following line in the Squid configuration file # Allow AIM protocols acl AIM_ports port 5190 9898 6667 acl AIM_domains dstdomain .oscar.aol.com […]
Category Archives: Security
How to set Cron/At Access Control ? Cron stores it’s enteries in the crontab (cron table) file. This is generally located in your /etc directory. As well, each user on your system can have their own crontab which would be stored in /var/spool/cron/. To edit a users crontab entry, simply log into your system for […]
How can I create and use my own Certificate Authority (CA)? 1. Create a RSA private key for your CA (will be Triple-DES encrypted and PEM formatted): $ openssl genrsa -des3 -out ca.key 1024 Please backup this ca.key file and remember the pass-phrase you currently entered at a secure location. You can see the details […]
check out this nice tutorial on email notification for root logins. Keeping track of who logs into your server and when is very important, especially when you’re dealing with the super user account. 1. Login to your server and su to root, I know the irony! 2. cd /root 3. pico .bashrc 4. Scroll to […]
Generally when we login to VSFTPD using our username and password, it’s transmitted in simple/clear text, which is considered as insecure. we can configure VSFTPD server to use OpenSSl, so that all the details are encrypted during the transfers. ###install OpenSSL yum install openssl ###Generate a Certificate openssl req -x509 -nodes -days 365 -newkey rsa:1024 […]
Allowing the root user to login directly is a major security issue, we’ll show you how to disable it so you can still login as root but just not directly, reducing the security issue. This will force a hacker to have to guess 2 seperate passwords to gain root access. (you do have 2 seperate […]
How to encrypt text file in Linux (VIM) It is very easy to encrypt a text file in Linux, VIM text editor can be used to achieve it.. vim -x [file name] [kartook@Nilas ~]$ vim -x kartook.txt This will prompt us to enter encryption key (password) Enter encryption key : ****** Enter same key again: […]
With a view to tackle today’s enterprise security challenges Cisco has evolved a new architecture for enterprise security that will help enable business users to access information from any device and any location with a high degree of ease and security, The Secure Borderless Network architecture focuses on four critical anchors: enterprise end-points (mobile or […]
FBI Director Robert Mueller sounded a call to arms at RSA, telling security experts that the country needs their help to fight cybercrime and terrorist attacks. He also enlisted the help of companies, promising greater sensitivity on the agency’s part when investigating breaches. “We know that putting on raid jackets, courting the media, and shutting […]