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<p>Not sure which port they scan to allow them on the inside of the
firewall.<br>
</p>
<div class="moz-cite-prefix">On 5/25/20 5:48 PM, Snyder, Alexander J
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAAqYjtPc8K1rNXvZe8e57RymK7oZvsk0+zAsODM=C5O6tsdd2A@mail.gmail.com">
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<div dir="auto">The only outbound ports open without concern are
123(UDP), 53(UDP), 80(TCP), and 443(TCP). All other ports are
blocked, outbound to the web, on my system.
<div dir="auto"><br>
</div>
<div dir="auto">If I read this, this would go around my guards,
as they are "piggybacking" on 443 in and out, right?<br>
<br>
<div data-smartmail="gmail_signature" dir="auto">Thanks, <br>
Alexander<br>
<br>
Sent from my Galaxy S10+</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, May 25, 2020, 17:12
Harold Hartley via PLUG-discuss <<a
href="mailto:plug-discuss@lists.phxlinux.org"
moz-do-not-send="true">plug-discuss@lists.phxlinux.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">I'm not sure
if anything can be done to stop port scanning of ports.<br>
<br>
I'm really not having a big concern since I have 2 firewalls
anyway. I <br>
have a firewall on one device and a firewall on my computer.
So the only <br>
ports they will see is the one on my first device and not the
computer. <br>
At least that's my theory.<br>
<br>
On 5/25/20 1:17 AM, Steve Litt via PLUG-discuss wrote:<br>
> On Sun, 24 May 2020 20:52:43 -0700<br>
> Harold Hartley via PLUG-discuss <<a
href="mailto:plug-discuss@lists.phxlinux.org"
target="_blank" rel="noreferrer" moz-do-not-send="true">plug-discuss@lists.phxlinux.org</a>>
wrote:<br>
><br>
>> But I close up ports that doesn't need to be<br>
>> open in order to make my system safe. You'd be
surprised at how many<br>
>> ports are open that can leave a system open for
attacks.<br>
> When you say "close up ports", do you mean make sure
there's no<br>
> executable listening at that port, firewalling that port
so nothing can<br>
> come in or out, or something else?<br>
> <br>
> SteveT<br>
><br>
> Steve Litt<br>
> May 2020 featured book: Troubleshooting Techniques<br>
> of the Successful Technologist<br>
> <a href="http://www.troubleshooters.com/techniques"
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true">http://www.troubleshooters.com/techniques</a><br>
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<br>
-- <br>
Harold Hartley<br>
17632 N. 5th Pl<br>
Phoenix, Arizona 85022<br>
<br>
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</blockquote>
<pre class="moz-signature" cols="72">--
Harold Hartley
17632 N. 5th Pl
Phoenix, Arizona 85022</pre>
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