Source: Lone Wolf $cripts
SSH est l’acronyme de Secure SHell. Il s’agit historiquement du remplaçant de Telnet. Telnet est l’outil utilisé pour dialoguer simplement avec un serveur. Sa force : il peut se connecter à n’importe quoi ou presque. Ainsi, un fou utilisant telnet peut envoyer des emails (protocole SMTP), lire des pages Web (protocole HTTP), remettre sa montre à l’heure (protocole NTP), etc… Son inconvénient majeur : toutes les informations circulent en clair sur le réseau, mots de passes compris. A une époque, telnet était utilisé pour ouvrir une session à distance sur un serveur… imaginez le cauchemard. SSH est un outil dédié à l’ouverture de sessions à distances via une connexion sécurisée. Pour faire simple, SSH est à telnet ce que HTTPS est à HTTP : une version chiffrée et sécurisée. Cet article présente certaines des subtilités de SSH. Lire la suite…
source: lifeonubuntu.com
I went to check out my apache2 logs
ls /var/log/apache2/
and I noticed that they were being automatically rotated (access.log, access.log.1, etc.) and compressed with gzip (access.log.2.gz, etc.). This seems to be the default Ubuntu configuration. I wanted to make find out more, and I found this helpful article about Ubuntu logs, including Apache2 Log info and some basic log rotation info.
After reading through the info, I decided that I wanted to make a few changes. The log rotation happens via the brilliantly named logrotate command. It turns out that logrotate settings kept in 2 places. Lire la suite…
source: generationip.asia
Fail2ban is a very useful and powerful solution to limit the bruteforce on your server. but fail2ban doesn’t provide you a way to contact directly the IP provider’s of bruteforce attacks source. I have modify an fail2ban action file’s and create a script for that.
INSTALLATION
Go to the fail2ban action folders :
# cd /etc/fail2ban/action.d
Lire la suite…
Introduction
Many times it can be convenient to tunnel your web traffic through a proxy, particularly an encrypted one. This web page shows how to easily tunnel your traffic through an ssh-encrypted proxy on Mac OS X. This allows your traffic to traverse your local network without being visible to snoopers, even when visiting unencrypted sites.
It also allows you to appear to come from a different IP address, allowing you to defeat geolocation schemes. In particular, some credit card processors try to make sure that your credit card billing address is correlated with your IP address, which can be hard on us expatriates. Another example is the free credit report web site which doesn’t seem to work from outside the United States. There are undoubtedly many other practical, legitimate uses for this sort of redirection. Lire la suite…
