Full Disclosure mailing list archives

Re: Odd Behavior - Windows Messenger Service


From: Ron DuFresne <dufresne () winternet com>
Date: Thu, 17 Jul 2003 15:08:32 -0500 (CDT)


        [SNIP]


I was wondering about this as well.  Even if you don't run a local FTP,
HTTP, NFS, SMB, SSH, or other service on your local Linux workstation,
you're guaranteed to be bringing up parts of the system to talk to the
network during the boot process.  Chances are you're broadcasting for
DHCP.  If you're a thin-client, you may be asking for tftp or bootp even
before that.  If you're running a virus scanner, it may be starting in
the background, downloading updates automatically from a central server
and scanning files.  If you've got NIS, ADS, or Kerberos or something
running, you may be hooking into local authentication systems.  These
things are all true for Windows workstations and Mac workstations, too.


All the more reason to configure such protocols properly and securely;

        bind them to the proper NIC:ports, and do not allow them to bind
        to all NIC's

        for those nasty protocols and such that defy configuration
        directly, make sure they are secured by other meand, say a
        firewall or personal desktop firewall at the least, to limit
        exposure to something other then the open internet.

Enforcing paramaters upon the less then nice protocols merely requires a
tool outside the specific portocol itself.  May home users, being on
dialups still, do not have as much 'startup' exposure, and those with
DSL/cable modem access, would do well to firewall those 'NICS', as well as
rotate them to start after such services as the firewall/IDS etc...

But, it seems this will be rehashed for another week since we're stating
nothing that has not been stated by at least 20 others already and some
refuse to injest.

Thanks,

Ron DuFresne
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Cutting the space budget really restores my faith in humanity.  It
eliminates dreams, goals, and ideals and lets us get straight to the
business of hate, debauchery, and self-annihilation." -- Johnny Hart
        ***testing, only testing, and damn good at it too!***

OK, so you're a Ph.D.  Just don't touch anything.

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