Who are these guys hitting my server hard

[rfontaine]

Anybody here heard of this:

h64-5-245-10.gtcust.grouptelecom.net

They are hitting my server pretty hard.

[jatar_k]

group telecom is just an isp, it is one of their customers.

[rfontaine]

is there a way to block them in an .htaccess file? If so, any ideas how?

[John Carpenter]

If you are experiencing DoS (denial of service) attack, you should contact the ISP and complain. It is also possible that the hostname is just a proxy.

You can block them by inserting the following in your .htaccess file:

RewriteCond %{REMOTE_ADDR} ^h64-5-245-10
RewriteRule ^yourdomain.com/(.*) [yourdomain.com...] [F,L]

However, the hostname may be dynamically assigned so it may change often. You should definitely contact the ISP first.