I'm having a phpbb forum on my sudoku site, but I have this big problem: There is russians and others every day posting a lot of spam and links to pornography. So I wonder how do you guys at Frihost prevent spam. Do you use a phpbb spam filter mod, or what? I really need help...
I have earlier tried to install a spam filter mod, but I couldn't get it to work...
This could be a good thing... free porn without even going on google !!
Firstly - require users to register. This should cut a few out.
Next take a trip to phpbb.com and have a look through the mods section. I can't remember exactly what it is called but it's something along the lines of "anti spambot" mod.
Basically it times the length of time between the post page opening and the submission click. If it's less than half a second or something it will not post and just redirect to the same page.
This way (most) spam bots will assume it has posted and move along. Users typing a decent length message won't be affected (takes longer than 0.5 secs to type) and cut and paste or one word answer users can just hit submit again.
PS Blocking the offending IPs may also help to some degree.
Use a code confirmation option. That way only humans can register; bots just see the picture as a load of hex digits and haven't a clue how to interpret it.