Re: How to Stealth POP3 Port 110 using NIS2000?

From: Eirik Seim (eirik@peter.mi.uib.no)
Date: 02/13/02 

From: eirik@peter.mi.uib.no (Eirik Seim)
Date: 13 Feb 2002 11:25:50 GMT

In article <aIra8.27774$Cg5.1498079@news1.calgary.shaw.ca>, Nameless wrote:
> "Wolfgang Kueter" <wolfgang@shconnect.de> wrote in message
> news:a4daup$3s21@news.shlink.de...
>> Nameless wrote:

[ cutting away some statements of paranoia ]

>> You just can't 'stealth' a machine, that is part of the internet and
>> there is _no_ reason to try that silly stuff.
>
> Humor me.

What do you want to protect by 'stealth-ports' ?

Your privacy? If so, would you (or anyone?) please explain in detail how a
stealthed port protects your privacy, 'cause I really don't get it. And
I've been building firewalls for a while.

>> You are constantly beeing fooled by stupid and technically incorrect
>> marketing talk.
>
> Maybe so. Yet who is to say that your talk isn’t “stupid and
> technically incorrect”? Am I to take your word for it against all that
> I’ve read from arguably far more reliable and knowledgeable sources?

What sources? grc.com? Did you try reading some real papers on real
firewalls, from sites like CERT or COAST?

>> > How do I go about stealthing port 110?

There is no magic about port 110. If your packet filtering software can
'stealth' port 80, then it can 'stealth' port 110 in exactly the same manner.

>> > Why can't I see evidence of probes? [?]

What kind of probes?

>> What about asking those questions the vendor of that software?
>
> Thanks for the tip. I may just do that.

You know, there probably is a reason why your software vendor supplies a
manual, an online FAQ, a security alert mailing list, and such. It's
because your vendor knows the ins and outs of their own products. Well,
at least if they don't, you should try other vendors.

- Eirik 

--
Eirik Seim                        System Administrator
eirik.seim@mi.uib.no              Math. Department
http://www.mi.uib.no/~eirik       University of Bergen

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