Full Disclosure mailing list archives
Re: targetted SSH bruteforce attacks
From: BMF <badmotherfsckr () gmail com>
Date: Thu, 17 Jun 2010 21:43:25 -0700
On Thu, Jun 17, 2010 at 5:31 PM, Sebastian Rother <sebastian.rother () jpberlin de> wrote:
But OpenBSDs "PF" could limit the attacks you descripe pretty nicely (and here I have to thanks Henning and others for their free time imho, what you made is imho working at least).
Here's how it is done on Linux: iptables -F iptables -t nat -F iptables -t mangle -F iptables -X # Block SSH brute force attacks but not our networks like 1.2.3.0/24 etc. iptables -N SSH_WHITELIST iptables -A SSH_WHITELIST -s 1.2.3.0/24 -m recent --remove --name SSH -j ACCEPT iptables -A SSH_WHITELIST -s 4.5.6.0/24 -m recent --remove --name SSH -j ACCEPT iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --set --name SSH iptables -A INPUT -p tcp --dport 22 -m state --state NEW -j SSH_WHITELIST iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 60 --hitcount 4 --rttl --name SSH -j LOG iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 60 --hitcount 4 --rttl --name SSH -j DROP BMF _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Re: targetted SSH bruteforce attacks, (continued)
- Re: targetted SSH bruteforce attacks Paul Schmehl (Jun 17)
- Re: targetted SSH bruteforce attacks John Jacobs (Jun 17)
- Re: targetted SSH bruteforce attacks Xin LI (Jun 17)
- Re: targetted SSH bruteforce attacks Valdis . Kletnieks (Jun 18)
- Re: targetted SSH bruteforce attacks Marsh Ray (Jun 21)
- Message not available
- Re: targetted SSH bruteforce attacks Marc Olive (Jun 22)
- Re: targetted SSH bruteforce attacks bugs (Jun 26)
- Re: targetted SSH bruteforce attacks Sebastian Rother (Jun 17)
- Re: targetted SSH bruteforce attacks Thor (Hammer of God) (Jun 17)
- Re: targetted SSH bruteforce attacks BMF (Jun 17)
- Re: targetted SSH bruteforce attacks Gary Baribault (Jun 18)
- Re: targetted SSH bruteforce attacks Ashish SHUKLA (Jun 18)