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fail2ban

ban hosts that cause multiple authentication errors
http://www.fail2ban.org
Score:
 18
9 reviews
Description:

Fail2ban monitors log files (e.g. /var/log/auth.log, /var/log/apache/access.log) and temporarily or persistently bans failure-prone addresses by updating existing firewall rules. Fail2ban allows easy specification of different actions to be taken such as to ban an IP using iptables or hostsdeny rules, or simply to send a notification email.

By default, it comes with filter expressions for various services (sshd, apache, qmail, proftpd, sasl etc.) but configuration can be easily extended for monitoring any other text file. All filters and actions are given in the config files, thus fail2ban can be adopted to be used with a variety of files and firewalls. Following recommends are listed:

- iptables -- default installation uses iptables for banning. You most
probably need it
- whois -- used by a number of *mail-whois* actions to send notification
emails with whois information about attacker hosts. Unless you will use
those you don't need whois
- python3-pyinotify -- unless you monitor services logs via systemd, you
need pyinotify for efficient monitoring for log files changes

User reviews:
ScoreComment

kennyhendrick2
1 year ago
5 Thanks fail2ban engineers and developers. Monopoly doesn't have anything on you guys!

viem
2 years ago
5 Click on Install and forget it! Works out of the box. (Mint 18)

zemos
3 years ago
5 najs!

alaint
5 years ago
5 love it

Gotenks
8 years ago
5 Simple and necessary for anyone with a public presence

enedene
8 years ago
5 Simple and works great. I use it on my server for years.

adirusf
8 years ago
5 I like this progam simple and efficient

another_mutant
8 years ago
5 protects vs logins on multiple protocols, other features I haven't tried yet.

digimaus
8 years ago
5 This is a great program and works very well especially against SSH attacks.