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Registered: 09/02/10
Posts: 81
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#234761 - 02/11/10 07:31 PM
Re: Server getting attacked
[Re: Gizmo]
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newbie
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Registered: 12/31/06
Posts: 36
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Hi, Have had many sort of attacks from China, Brazil, and eastern Europe. I use IPTables to block some countries completely. I get a master list from: http://www.wizcrafts.net/chinese-iptables-blocklist.html for example... Once I get their list I put it into a script file and run it on the server. Something like this:
#!/bin/bash
# china blocklist
# generated from http://blacklists.linuxadmin.org
/sbin/iptables -A INPUT -p tcp -s 58.14.0.0/15 --dport 22 -j REJECT
/sbin/iptables -A INPUT -p tcp -s 58.16.0.0/13 --dport 22 -j REJECT
/sbin/iptables -A INPUT -p tcp -s 58.24.0.0/15 --dport 22 -j REJECT
A few other things is I move my default SSH port. This helps tremendously. On my server it is controlled in the file /etc/ssh/sshd_config I changed or added this line. Except I used my secret numbers. These are not the actual numbers I used. You may also want to consider moving your FTP ports as well. You can also do port scans against your server to see what is obviously visible to a hacker. There are tools for that at Sourceforge.net
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you, 
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