Snort mailing list archives

Re: port 443 in HTTP port variable list


From: Harley H <bobb.harley () gmail com>
Date: Fri, 10 Jul 2015 13:04:51 -0400

I totally agree. I'm hoping to get a gauge as to whether it's common
practice to add port 443 to the list. And, if it is common practice, would
it be possible to add it to the default list? Alternatively, if it is not
common practice, perhaps it should be.


On Fri, Jul 10, 2015 at 12:41 PM, waldo kitty <wkitty42 () windstream net>
wrote:

On 07/10/2015 11:36 AM, Harley H wrote:
Have many of you added port 443 to the HTTP port variable? I see a lot of
malware using plaintext HTTP over port 443 and am wondering if it's
regular
practice to add port 443 to the list.

if you are seeing plain text traffic over port 443, then someone or
something is
co-opting the fact that you are allowing that port inbound and/or outbound
access... P2P, some music/video streaming apps and malware are coded to
specifically get around network administrative restrictions...

as each network is different, if you are seeing plain text traffic on 443,
then
yes, i would add it to your "portvar HTTP_PORTS" list as well as the list
of
ports the http preprocessor uses... not doing so is letting that traffic
pass
without inspection and you could be allowing compromised data out or
(other)
malware in...

just like with having sex, an unprotected access point is a point of
possible
infiltration, infestation and compromise ;)

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