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View Full Version : blocking IP's



rhia
09-19-2005, 12:58 AM
Strange question I know, but is there any way I can block certain IP's from visiting a website (a paid host, not my own machine!).

On a slightly different angle, most ISP's block certain ports because they are known to be trouble in terms of spreading worms and virii etc. Should web hosts adopt a similar attitude, and if so, is it possible for a host to easilty bloack access to their servers on particular IP's?

I speak from the perspective of someone who's sick of clearing spam from a guestbook that's been left there by some kind of script (related to freeyaho.com - don't visit the site unless you are NOT still using the MSVM, and are reasonably well protected, including a pop-up blocker. It's dodgy, and I don't know what it's serving up altogether), and have recently found that someones taken to signing up to my phpbb2 forum just to leave a spam website as their profile homepage. I'm sure that someone somewhere knows where this stuff tends to come from.

mark87
09-19-2005, 01:01 AM
You can use .htaccess to block IP's. You would do something like this -

order allow,deny
deny from 127.0.0.1
allow from all

Where the IP is their IP of course.

You can do a range of IP's I think but I've forgotten how to do that. Be careful though, you may block innocent users.

JamieR
09-19-2005, 09:32 AM
You can do it via .htaccess or PHP. Only thing with PHP is you have to include the script on every page.

raf
09-19-2005, 12:51 PM
did you check they always use the same IP? or are you planing on denying IP-ranges?
it would surprise me that they'd use a fixed IP.

and are you trying to prevent these users from accessing your site, or that they can automatically post to your guestbook? automatic posts can be prevented by using a security-image they need o type over. This is fairly simple. trying to prevent people from posting, without using a loginform and strict rules about creating an account (like: they need to post a request by tradidional mail, or they need to be refered by a trusted user or something like that) is a lott harder.

if they always post the same or similar messages, then you can build some sort of filter to detect and block them, but else, i think your best option is to set up a convinient admin-screen that shows all new entrys with an option to validate or delete them.

rhia
09-20-2005, 12:13 AM
I haven't yet checked the IP's on the latest lot of spam recieved if I'm honest. I did check the webstats for referrers just quickly though, one of which was quite literally "xxxx://xxxxxxxx.xxx", which is quite obviously a little suspicious.

On the previous bout of guestbook spam, it did all seem to come from the same few web pages...

http://dimattic.com/uni.cgi
http://umax-search.net/post/uni.cgi
http://umax-search.net/post/umax.cgi
http://www.mywebsearch.com/jsp/GGmain.jsp
http://umax-search.net/post/post.cgi

...though they all seem to point to the same thing these days - they used to point to various pages of odd looking submission forms that repeated across the screen.
(treat these links just as the one gave originally - with caution)

Oh well. It looks like I may just have to learn php after all (not really got the time for learning php right now, but if needs must...).



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