From: Chris Brenton <cbrenton@chrisbrenton.org>
To: Deshwal Chand <CDD@kampsax.co.in>
Cc: "Netfilter (E-mail)" <netfilter@lists.netfilter.org>
Subject: Re: Difficulties in stopping mass advertisement IP directed broadcast popup windows
Date: Fri, 05 Sep 2003 12:47:51 -0400 [thread overview]
Message-ID: <3F58BE37.6090601@chrisbrenton.org> (raw)
In-Reply-To: 88116A11E9DFD411870900508BEC3831803CB6@CPQ01
Deshwal Chand wrote:
>
> We used to receive ip directed popup windows mass messages. I blocked
> 135,137-39, 445 ports and they stopped. Now they have started to come again.
Check your Windoze boxes, you'll see they are listening on one or more
ports in the TCP/1024 - TCP/1027 range as well. These ports can also be
used to send pop-ups.
As a side note however, it sounds like you are trying to block what you
are worried about and let everything else through, rather than only
letting through what you need and blocking everything else. If you had
taken the latter stance with your perimeter, this would be a mute issue
as you would not have the ports open anyway.
Just my $.02,
C
next prev parent reply other threads:[~2003-09-05 16:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-05 4:46 Difficulties in stopping mass advertisement IP directed broadcast popup windows Deshwal Chand
2003-09-05 11:55 ` Dharmendra.T
2003-09-05 16:47 ` Chris Brenton [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-09-05 5:04 George Vieira
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