Security Basics mailing list archives
Re: SSH server under attack...
From: "Timothy Hall" <admin () TELE2WIN NET>
Date: Wed, 25 Jan 2006 17:38:19 -0500
http://denyhosts.sourceforge.net/ this has the ability to block ssh (or optionally all services) attempts by writing the offending IP address into /etc/hosts.deny. it will also send an email to you letting you know the IP of the entity blocked. you may have to tweak it a bit to get it to work the way you desire... it is highly configurable. the readme/faq tells you pretty much all you need to know. not sure if it will be helpful to you in your environ, but it is worth a try mroe than likely... cheers!
Dave <dlaud.flux () gmail com> 01/25/06 16:51 PM >>>
Bryan S. Sampsel wrote:
Set up portsentry on your box and configure it to drop packets from
anyone
port-scanning your box.
This sounds like a good idea. But I cant install portsentry on the router...which still can be scanned to find it's *open* ports. I think we are going to set up linux box as firewall using iptables and install portsentry etc...Off hand do you know if portsentry (or any other application that) will notify you in real time of any attempted intrusion via email?
Right there keeps him from finding what you changed the port to. Then, change the port to some other number and restart both portsentry
and
sshd. I'd recommend a FreeBSD or Linux firewall in front of you that you can
do
this config with as your first line defense. Port Sentry is no longer maintained at its old home, but you can do a
web
search and find its new home easily enough. Good luck. Sincerely, Bryan S. Sampsel LibertyActivist.org
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Current thread:
- Re: SSH server under attack..., (continued)
- Re: SSH server under attack... Rembrandt (Jan 26)
- Re: SSH server under attack... Jason Mitchell (Jan 25)
- Re: SSH server under attack... Teemu A. (Jan 26)
- Re: SSH server under attack... ilaiy (Jan 25)
- RE: SSH server under attack... Matt Cunnane (Jan 26)
- Re: SSH server under attack... Frankie Li (Jan 26)
- Re: SSH server under attack... Matt Alexander (Jan 26)
- Re: SSH server under attack... unixadmin99 (Jan 26)
- Re: SSH server under attack... xyberpix (Jan 30)
- Re: SSH server under attack... Kenton Smith (Jan 25)
- Re: SSH server under attack... Timothy Hall (Jan 26)
- Re: SSH server under attack... hytham . a (Jan 26)
- Re: Re: SSH server under attack... bob (Jan 26)
- Re: SSH server under attack... pg_vlad (Jan 26)
- RE: SSH server under attack... Beauford, Jason (Jan 26)
- RE: SSH server under attack... Byrd, Gregory (Jan 26)
- Re: SSH server under attack... gmHumfrey (Jan 26)