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Re: Port blocking last resort in fight against virus
- From: Sean Donelan
- Date: Tue Aug 12 22:45:05 2003
On Tue, 12 Aug 2003, Randy Bush wrote:
> > Is it just me that feels that blocking a port which is known to be used
> > to perform billions of scans is only proper?
> the second, and important part of the, question is whether there
> are legitimate packets to that port which want to cross your border.
> for 135, i am not aware of any that should cross my site's border
Who should determine what protocols can cross your site's border router?
You or your ISP (ignoring the fact a lot of people on this list are their
80% or more of customers wouldn't notice if you blocked everything on
their connection except HTTP/HTTPS and DNS. So why do ISPs let all
the other infection laden protocols reach their customers?
Fix spam - block port 25
Fix Slammer - block port 1434
Fix Blaster - block port 135
Fix KaZaA - block everything
I think filters/firewalls are usefull. I believe every computer should
have one. I have several. I just disagree on who should control the