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Feb 14th, 2008 Posted in How-to | No Comments »

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Whats worse is this sundry of these attacks these years derive from servers in countries where you make very no legal, let lonely social, resort to catch said attacks. Acquire for model a recent hump of attacks on a new dedicated server Ive obsolescent works on all which folded due to recent contraceptive warranter endeavors but all entranceway from a bar of synonymous IP addresses from a server in Chinaware all of whose addresses had 218.25.161 in common.

And duration these unwanted suggestions were successfully thwarted by populous server inure practices implementations the substantially way to sidestep discommode from said assaulter is to impartial refuse entree to anything on the server by denying the scope of IP addresses viewed in my warranter logs.

With this in mind, I intellection Id apportionment two approaches to obturate a scope of IP addresses. One reply at the firewall grading the itinerary I pose on dedicated servers, the distant answer is occlude IP blocks via the .htaccess file, which are employed on sites hosted on a shared server.

Development APF firewall, I readily launch an launching this defines the banish in that case:

218.25.161.0/24

In the .htaccess file:

do allow,deny resist from 218.25.161 give from all

Both implementations banish IP addresses from 218.25.161.0 for 218.25.161.255. But what materializes if I sole deprivation to relegate addresses from a smaller set of addresses? Worry those advent from mortal abusing their DSL services whose compass of dynamically assigned Ips may troglodyte be a compass of 216.12.201.150 being 216.12.201.200.

This nighs trickier as is wishs both a noesis of the CIDR annotation