Merry Christmas
MERRY CHRISTMAS TO YOU ALL!
Fight against spam
From today, commentfields are now disabled by default. So regular visitors are not threaten by a permanent ip-ban.At this point every 15 minutes a script runs to filter out all the comments and put the ip-address in to ban-list and removes all the…
ClieOp03 to pipe-seperated-values
I have often to deal with ClieOp-files. ClieOp-files are files which are used by telebankingsystems in the Netherlands to load transactions from an administration application into the telebanking application.Yesterday I wrote a tiny perl-script to…
Reading and converting a really big dataset!
At this moment I am connect to a brand new project, one of the goals of this project is to find out if their is any fraud. For this investigation I received a dump of a SAP-database, with the next data:Transactions payableAuthorisation levelsUsern…
2-factor authentication with SSL-certificates… defeated
Once up on a time somewhere in the Netherlands, there was a guy who gave me all his usernames and passwords to enter the systems he has access to. Their was an application accessable via the Internet, although you need a personal SSL-certificate b…
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…