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Thread: host.deny limitations
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01-17-2014, 04:26 AM #1Junior Guru Wannabe
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host.deny limitations
I am doing alot of blocking using host.deny file. Currently I have around 10,000 entries there.
Server is Dual Quad Core i5 16gb ram on SSD drives. Load is still very low + server is 90-95% idle with 0 wait.
Is there a limit to the amount of entries I can put there before server performance is affected?
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01-17-2014, 05:37 AM #2Web Hosting Evangelist
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the performance will be affected but the effect will not be noticeable so less blocked ips better performance 10.000 entries is not a big problem, i blocked 22000 on a 1 GB of RAM VPS without any problem
as long as you are under 25000 blocked ips you will be okLast edited by badboyx; 01-17-2014 at 05:47 AM.
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01-17-2014, 05:43 AM #3Junior Guru Wannabe
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01-17-2014, 07:03 AM #4Junior Guru
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Why don't you rather use DenyHosts or fail2ban so that at least dynamic IPs get unblocked after a certain duration?
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01-17-2014, 07:10 AM #5Junior Guru Wannabe
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Its a good idea but we already use ASL Firewall from gotroot.com and its helpless because when there is a large attack trying to bruteforce say wordpress, I would rather just put a permanent block on any ip's that are involved in hacking.
The problem with temp bans, the hackers figure it out real and rotate the ips and when they have thousands of ip's at their disposal its pretty hard work on processing.
DenyHosts and Fail2ban are pretty nice options for general blocking though, however ASL takes care of that for us.
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