instead of blocking him, gather the logs and lart the ISP in question. inform 
them he is stealing valuable resources (he is a troll after all and using 
your services without permission).

They may opt to either temporarily terminate his account or make it more 
permanent.

btw, that ISP has a large number of subnets (ISP: bulldogdsl.com). blocking 
all of them would result in probably blocking valid users too.


On Monday 04 April 2005 22:17, Jim wrote:
> I run a web server and an ftp server on my linux box.  On the web server
> I also have one of those html to email forms so users can email me
> without having to know my email address.  Lately a troll has started
> using that form to make a pest of himself.  I want to block him from
> having access to my web and ftp servers.  Yesterday I blocked the
> address he's been using for several days.  Today he got back in.  I
> looked and discovered that his ISP apparently assigns its users dynamic
> IP addresses.
>
> I did a lookup on the two IP addresses he's used so far.  They appear to
> be from two different subnets.  I would like to block those subnets
> without blocking anything else.
>
> For example: I know in httpd.conf if I put in
> RewriteCond %{REMOTE_ADDR} 192\.168\..*
> it will block any IP address that begins with 192.168
>
> Can someone please tell me what in the above example I need to enter to
> block the subnets the troll is using?  Below is information I found at
> www.ripe.net/whois
>
> For 83.146.27.162
>
> inetnum:      83.146.26.0  - 83.146.27.255
> route:        83.146.0.0/18
>
> For 84.9.75.12
>
> inetnum:      84.9.64.0  - 84.9.95.255
> route:        84.9.0.0/16
>
> Thank you
>
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