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Linux - Networking This forum is for any issue related to networks or networking.
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Old 03-01-2009, 09:41 AM   #1
Registered: Sep 2003
Distribution: Fedora
Posts: 52

Rep: Reputation: 15
blocking ips

I am setting up iptables on my linux server which sits behind a linksys router the server has samba vsftp and dhcp running the problem is i have a large group of hackers trying to gain entry through ftp with alphabetic attacks is there a way that i can setup my vsftp config or my iptables config to drop requests if someone fails to authenticate after so many times
Old 03-01-2009, 10:38 AM   #2
Registered: Dec 2004
Distribution: Slackware, Arch, FreeBSD
Posts: 202

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2 things I might try:


Good Luck
Old 03-01-2009, 11:34 AM   #3
Registered: Sep 2003
Distribution: Fedora
Posts: 52

Original Poster
Rep: Reputation: 15
i installed fail2ban and am still getting the same problem any other suggestions
Old 03-02-2009, 01:26 PM   #4
LQ Newbie
Registered: Jan 2004
Posts: 6

Rep: Reputation: 0
Did you enable fail2ban in the jail.conf for your FTP server? I also turned my maxretry to 3. I have also installed denyhosts and turned on the sync function. It downloads IPs of known attackers and places the IPs in the denyhost file, that stopped most of the attacks for me.


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