Thankfully, software writers and blog administrators have implemented several strong
techniques for repelling the onslaught. Since these comments are usually delivered by a
script, not a human being, their patterns can be predicted. The Spamhaus Project,17 a
UK-based organization looking to fight spam on all fronts, publishes the Spamhaus Block
List (SBL), which is a constantly updated roll call of known offending IP addresses. Many
CMSs are built to reference this database in real time to determine if the posting party??™s IP
address is listed as a no-no on the SBL.
Another spam-fighting technique involves running comments through Akismet,18 which
analyzes each comment, and then sends back a positive or negative message to the host
system. The Akismet system is free for personal and nonprofit usage, with commercial
licenses available. The system is available for most major blogging packages, including
WordPress, Textpattern, and Movable Type.
Banning IP addresses on Apache servers. To deny IP addresses using the .htaccess file
on Apache servers, simply insert the following lines of code into the file:
order allow,deny
deny from xxx.
Pages:
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431