ISPs urged to block spam

 

ISPs should prevent spam from leaving their networks, says Trend Micro.

Most spam comes from Chinese and Korean IP addresses, but the amount via Polish and French ISPs is close behind, according to security vendor Trend Micro.

Trend’s Dave Rand said ISPs should do more to prevent spam leaving their networks, and should help users by monitoring IP traffic from their PCs and helping them deal with problems caused by trojan horse software. He added that over 80 percent of spam now comes from PCs infected by software that allows unauthorised users to have remote control.

ISPs should block mail from dynamic IP addresses destined for a server using the TCP/IP port 25, said Rand. He added that this port should be used only by proper mail servers with static IP addresses, so such blocking should not affect legitimate email traffic.

Copyright © 2010 IT Week


ISPs urged to block spam
Tags
 
 
 
Top Stories
Parliament passes law to let ASIO tap entire internet
Greens effort to limit devices fails.
 
Business-focused Windows 10 brings back the Start menu
Microsoft skips 9 for the "greatest enterprise platform ever".
 
Feeling Shellshocked?
Stay up to date with patching for the Bash bug.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest Comments
Polls
Which is the most prevalent cyber attack method your organisation faces?




   |   View results
Phishing and social engineering
  65%
 
Advanced persistent threats
  5%
 
Unpatched or unsupported software vulnerabilities
  11%
 
Denial of service attacks
  6%
 
Insider threats
  12%
TOTAL VOTES: 1387

Vote