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Möte OSDEBATE, 18996 texter

Text 13807, 135 rader
Skriven 2006-11-09 09:47:54 av Gary Britt (1:379/45)
  Kommentar till text 13800 av John Beckett (1:379/45)
Ärende: Re: Firewall Question
=============================
From: Gary Britt <glbNOSPAM@gencogDOTcom.com>

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OK, thanks for the info.  I have a mix of winXP, win2K,  and sometimes win98
machine, so I usually keep net bios turned on.  If I understood you correctly
you are saying that if I use static IP addresses for the machines in the peer
network and make entries in each machine's hosts file then I wouldn't need net
bios?

If a machine is named "glb_mx7340" for example would the host entry look like
this:  "192.168.0.102   glb_mx7340"   ??

And if I do this than to setup network shares and printer shares I would just
need port 445 open on each machine?  Both TCP and UDP or  just one or the
other?

Thanks,

Gary

John Beckett wrote:
> Gary Britt <glbNOSPAM@gencogDOTcom.com> wrote in message
> news:<4552a6a1$1@w3.nls.net>:
>
>> OK, so if you have a software firewall, I thought one of the advantages
>> of having a software firewall was to keep virii and trojans from your
>> side of the router/hardware firewall from getting on your machine.
>>
>
> You (should) hear mostly about this in a corporate environment where a
> workstation probably does NOT have shares and so does not need to open
> holes to allow incoming connections. Therefore a worm on the local network
> wold be much less likely to be able to penetrate such a workstation.
>
> But, as you say, if you share a folder then you need to open access to at
> least some ports, and if a worm could exploit the service that you have
> exposed, then you could be owned.
>
> If you have disabled NBT (NetBIOS-over-TCP) you only need to open access
> to destination port 445/tcp (but then you would need working DNS or hosts
> files to resolve names).
>
> Your firewall would still block connections to other ports not related to
> sharing, so you would get some protection (although there shouldn't be
> many of those ports on a workstation).
>
> But your essential point is correct.
>
> John
>
>


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<br>
OK, thanks for the info.&nbsp; I have a mix of winXP, win2K,&nbsp; and
sometimes
win98 machine, so I usually keep net bios turned on.&nbsp; If I understood you
correctly you are saying that if I use static IP addresses for the machines in
the peer network and make entries in each machine's hosts file then I wouldn't
need net bios?<br>
<br>
If a machine is named "glb_mx7340" for example would the host entry look like
this:&nbsp; "192.168.0.102&nbsp;&nbsp; glb_mx7340"&nbsp;&nbsp; ??<br>
<br>
And if I do this than to setup network shares and printer shares I would just
need port 445 open on each machine?&nbsp; Both TCP and UDP or&nbsp; just one or
the other?<br>
<br>
Thanks,<br>
<br>
Gary<br>
<br>
John Beckett wrote:
<blockquote cite="midkll5l215h9ulsmc3uus8vqmnilk3dhjji2@4ax.com"
 type="cite">
  <pre wrap="">Gary Britt <a class="moz-txt-link-rfc2396E"
href="mailto:glbNOSPAM@gencogDOTcom.com">&lt;glbNOSPAM@gencogDOTcom.com&gt;</a>
wrote in message
news:<a class="moz-txt-link-rfc2396E" href="mailto:4552a6a1$1@w3.nls.net">&lt;4
552a6a1$1@w3.nls.net&gt;</a>:
  </pre>
  <blockquote type="cite">
    <pre wrap="">OK, so if you have a software firewall, I thought one of the
advantages
of having a software firewall was to keep virii and trojans from your side of
the router/hardware firewall from getting on your machine.
    </pre>
  </blockquote>
  <pre wrap=""><!---->
You (should) hear mostly about this in a corporate environment where a
workstation probably does NOT have shares and so does not need to open holes to
allow incoming connections. Therefore a worm on the local network wold be much
less likely to be able to penetrate such a workstation.

But, as you say, if you share a folder then you need to open access to at least
some ports, and if a worm could exploit the service that you have exposed, then
you could be owned.

If you have disabled NBT (NetBIOS-over-TCP) you only need to open access to
destination port 445/tcp (but then you would need working DNS or hosts files to
resolve names).

Your firewall would still block connections to other ports not related to
sharing, so you would get some protection (although there shouldn't be many of
those ports on a workstation).

But your essential point is correct.

John

  </pre>
</blockquote>
<br>
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