More visitors on my blog
In november I had a lot of visitors on my blog (and a lot of spammers, there are at this moment 3415 ip-address blocked).
VPN-Clients also know the trick :)
As I wrote before about the SSH-443 trick, I found out that the VPN-client I use often is also using port 443 to login into the network … check out the next sreenshot
About this weblog
WelcomeOn this weblog I wrote small articles about (in my opinion) interesting subjects.At this moment I am working for Snow BV in the Netherlands, via them I am working as Technical Security Consultant/Linux Engineer for Shell. Since I work for …
Backup-script
In the past I wrote a backup-script which makes .tar.bz2 files of the Maildirs and some other data… But after the server crash a few months ago I did not reactive the backup-script. This night the script did again his backup-job and find out tha…
Escape from HTTP monitor policies
Since I found out that it is possible to defeat the security of a firewall… it is also possible to go on the Internet totally secured… without beeing monitored You need:A SSH-server who listen to port 443;An account on the SSH-server which all…
A Linux-server… or not… Why don’t you use VMWare? *argh*
Dear reader,I got a problem, and this problem are two of my collegues (and yes one of the two is the one about the IP-subnet stuff).My manager asked me to install Linux on a spare HP DL380 server, to start playing with some tool which is only avai…
Almost 600.. no 1200 IP-address are banned
After Captcha and some other stuff to prevent spamming on my blog… I implemented a Banlist… At this moment the list contains almost 600 unique ip-address. And if you are such a fool to post spam… you will be banned for live! If you are on t…
There is always a way to defeat security
Most companies have a policy to reject non HTTP traffic (read TCP port 80 and 443).An old friend of mine told me that a lot of companies do not verify if HTTP data is HTTP data… So… with this in mind I changed the configuration of one of the S…
My letter in the Linux Journal
The december edition of the Linux Journal, will contain my letter regarding speeding up the command.
My First posting on the Internet
My very first posting on the Internet can be found at GoogleI had the next question:date: ma 17 aug 1998 00:00Werkt de AMD K-6 300 Mhz onder RedHat Linux (Kernel 2.0.34)Gr. PieterTranslated into English:date: mo 17 aug 1998 00:00Does a AMD K-6 200…