With the popularity of free public Wi-Fi new precautions need to be taken when using your mobile device on the road free public Wi-Fi is a great public service, but it can come with severe security risks In this post I will show you how to protect your connection on a public Wi-Fi connection using […]
Hello all, In this post I want to cover ways to mitigate against unauthorized devices connecting to a switch for instance in a public library or an internet cafe where the access switch can be accessed by the public just to set the stage for this example there is an internet cafe called bobs internet […]
Hello all, Here is a little snippet of information on the importance of applying an access list to your edge router to IP blocks that are listed on the bogon list What is the bogon list? The bogon list is a list of ip subnets that are either invalid non routable ip blocks such as […]
Hello Everyone, So lately I’ve been busy focusing on WI-FI security I plan on doing a series of posts on the subject very soon, I wanted to share a presentation that I put together while attending a course at Sheridan college here in Ontario the subject of the class was about Linux administration I was […]
Hello All, this post is directed to businesses and IT pros who have to deal with spam issues Do you have an issue with spam ? A way to mitigate spam attacks with ease can be done with a couple of different things such as proper mail server configuration protecting internal emails from being published […]
Recently I was able to capture some real data from my servers fail2ban logs this is how fail2ban logs look for banning ips 2012-10-21 12:54:16,032 fail2ban.actions: WARNING [ssh] Ban 112.4.172.217 2012-10-22 17:05:48,080 fail2ban.actions: WARNING [ssh] Ban 222.73.24.10 2012-10-22 18:36:55,892 fail2ban.actions: WARNING [ssh] Ban 202.96.199.150 2012-10-22 23:23:10,053 fail2ban.actions: WARNING [ssh] Ban 111.74.82.33 2012-10-23 05:06:53,861 fail2ban.actions: WARNING […]
Protecting your public servers is crucial we have talked before on a previous post on how to mitigate Ssh attacks on a Cisco router now let’s talk Ssh on a server an ssh server is no different you still have the same issues to fend off from DDOS attacks to brute force attacks ssh servers […]
Here is what an ssh brute-force attack looks like from a Cisco router log uthentication Failed] at 01:13:18 UTC Sun Sep 30 2012*Sep 30 01:13:18.463: %SEC_LOGIN-1-QUIET_MODE_ON: Still timeleft for watching failures is 0 secs, [user: root] [Source: 211.144.68.163] [localport: 22] [Reason: Login Authentication Failed] [ACL: 100] at 01:13:18 UTC Sun Sep 30 2012*Sep 30 01:13:24.967: […]
Read this interesting pdf on how sinkhole works to kill ddos bots on the internet let me know what you think you will find the pdf here Link from www.cert.org
Every day millions and millions of computers around the world are compromised and the users of these computers don’t even know from the big corporations to the home users everyone is at risk and the scary part about it is that most of the users of the computers don’t even know !!!The problem is number […]