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security from nmap
| Posted by L1nux, 12-30-2009, 03:08 AM |
| hi all
i want to know how i can block ip for any user use nmap to scan my server
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| Posted by activelobby4u, 12-30-2009, 04:57 AM |
| nmap is a port scanner. The methods are to configure a firewall to open the needed ports and also configure the services for limited connections
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| Posted by DigitalLinx, 12-30-2009, 08:17 AM |
| You need an IDS service. Look into http://cipherdyne.org/psad/
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| Posted by jalapeno55, 12-30-2009, 10:36 AM |
| Snort would work better, and you can set it up in active response to block the port scan, psad just notifies you of it (I think)
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| Posted by CoreNetworks, 12-30-2009, 12:51 PM |
| I would highly recommend you look into portsentry which will likely meet your needs. You simply set it to listen on ports that you know you're not using, and when a probe comes in for those ports (like they would in an nmap of your system) then you could implement a rule like:
in your portsentry.conf file.
Hope this helps.
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| Posted by Dougy, 12-30-2009, 01:11 PM |
| IPTABLES_BLOCK_METHOD'.. look into it sometime, security guru!
ENABLE_AUTO_IDS is useful as well.
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