I installed net-analyzer/fail2ban-0.6.0 on my stable x86 server, running fail2ban results in the following error logged in the /var/log/fail2ban.log: 2006-08-12 18:29:22,637 WARNING: Verbose level is 1 2006-08-12 18:29:22,640 INFO: Fail2Ban v0.6.0 is running 2006-08-12 18:29:22,661 ERROR: 'iptables -N fail2ban-ssh iptables -I INPUT -p tcp --dport ssh -j fail2ban-ssh iptables -A fail2ban-ssh -j RETURN' returned 768 2006-08-12 18:29:22,666 ERROR: Fail2Ban got an unhandled exception and died. 2006-08-12 18:29:22,667 ERROR: Type: 'ExternalError' Value: ("Execution of command 'iptables -N fail2ban-ssh\niptables -I INPUT -p tcp --dport ssh -j fail2ban-ssh\niptables -A fail2ban-ssh -j RETURN' failed",) TB: [('/usr/bin/fail2ban', 46, '?', 'fail2ban.main()'), ('/usr/lib/fail2ban/fail2ban.py', 423, 'main', 'initializeFwRules()'), ('/usr/lib/fail2ban/fail2ban.py', 110, 'initializeFwRules', 'element[2].initialize(conf["debug"])'), ('/usr/lib/fail2ban/firewall/firewall.py', 73, 'initialize', 'executeCmd(self.startRule, debug)'), ('/usr/lib/fail2ban/utils/process.py', 134, 'executeCmd', 'raise ExternalError("Execution of command \'%s\' failed" % cmd)')] 2006-08-12 18:29:22,668 WARNING: Restoring firewall rules... 2006-08-12 18:29:22,793 ERROR: 'iptables -D INPUT -p tcp --dport ssh -j fail2ban-ssh iptables -F fail2ban-ssh iptables -X fail2ban-ssh' returned 768 iptables says: valiant ~ # iptables -N fail2ban-ssh\niptables -I INPUT -p tcp --dport ssh -j fail2ban-ssh\niptables -A fail2ban-ssh -j RETURN iptables v1.3.5: Can't use -I with -N
Can you put your fail2ban.conf?
Created attachment 103881 [details] fail2ban config file here it is...
Please try again with a more recent version and reopen if the issue still persists