[HamWAN PSDR] Newbie

Stephen Kangas stephen at kangas.com
Tue Mar 16 12:40:01 PDT 2021 

John, it’s a good idea to investigate FW filtering to prevent encrypted protocols, and certainly the MikroTik RouterOS is quite capable of that.  We should experiment with that to see if it breaks the Winlink Express connection with CMS.  Hopefully, as Scott pointed out, it will not by simply forcing the CMS to fall back to pure telnet protocol…but he says that may not remain the case into the future.  I’ll give it a try later this week when I have some time, others should, too.

 

Stephen W9SK

 

 

From: PSDR <psdr-bounces at hamwan.org> On Behalf Of John D. Hays
Sent: Tuesday, March 16, 2021 11:22 AM
To: Puget Sound Data Ring <psdr at hamwan.org>
Subject: Re: [HamWAN PSDR] Newbie

 

The HamWAN client is a MikroTik device which has a robust IP tables implementation which could be used for filtering.

 

On Tue, Mar 16, 2021 at 10:22 AM Aaron Taggert <aaron.taggert at gmail.com <mailto:aaron.taggert at gmail.com> > wrote:

I do not know what router you have but you could install squid (on the router or on a raspberry pi) on the ham wan connection and 'splice' the TLS Cipher to NULL: https://wiki.squid-cache.org/Features/SslPeekAndSplice

 

Also from HamWan.org:

 

https://hamwan.org/Administrative/Internet%20and%20Part%2097.html

 

https://hamwan.org/Standards/Network%20Engineering/Authentication/SSL%20without%20Encryption.html

 

https://hamwan.org/Standards/Network%20Engineering/Authentication.html

 

On Tue, Mar 16, 2021, 8:42 AM Steve - WA7PTM <psdr-list at aberle.net <mailto:psdr-list at aberle.net> > wrote:

Thanks Aaron.  I fully understand what SSL/TLS is, but am trying to zero 
in on how to avoid it on my HamWAN connection.  Unfortunately, the 
sneaky protocol translations on the back end will only continue, and we 
just need to be know which software to stop using when things are not 
obvious on the front end.

Steve


Aaron Taggert wrote on 3/16/21 8:26 AM:
> On the authentication/integrity side... FCC says no encryption so we can
> all hear what you're on about. Ham would not be much fun if all you heard
> was encrypted pseudo noise. SSL/TLS authentication is a bit like me sending
> you a list of 100 words and asking you to tell me word 45. Everything is in
> the clear, but I can authenticate that whomever is at the other end at
> least has the right list. Another SSL/TLS feature is integrity, meaning the
> whole message is received. They would be like saying I sent 3421 characters
> CW 786 of them were vowels. Again everybody can hear what we're saying but
> it would be difficult to impersonate the sender (or receiver) or change the
> message.
> 
> On Tue, Mar 16, 2021, 6:32 AM Steve - WA7PTM <psdr-list at aberle.net <mailto:psdr-list at aberle.net> > wrote:
> 
>> If we separate Winlink (the system) from Winlink Express (the client
>> program), is a SSL connection also the case with the other six clients
>> listed on the https://winlink.org/ClientSoftware page when used in
>> telnet mode?
>>
>> Steve
>>
>>
>> Scott Currie wrote on 3/15/21 10:06 PM:
>>> Yeah, I discussed this with the WDT, and the issue with using HamWAN or
>>> ARDEN. I had asked if we could force a non-SSL connection to the CMS.
>> They
>>> have been under pressure from AWS to switch to all SSL connections, so
>> they
>>> had to make the change. They did commit to leaving the client or gateway
>>> connection to RMS Relay as non-SSL, so that is why we have suggested
>> having
>>> a regional instance of RMS Relay on HamWAN that the RMS Gateways and
>>> clients could point to. Backend of the RMS Relay would then connect to
>> the
>>> CMS over SSL on a hardened Internet connection (like at a county EOC or
>> the
>>> State EOC), or even HF forwarding if the Internet is down.
>>>
>>> -Scott
>>>
>>> On Mon, Mar 15, 2021 at 9:41 PM Stephen Kangas <stephen at kangas.com <mailto:stephen at kangas.com> >
>> wrote:
>>>
>>>> Scott, thanks for that update, interesting.  “Telnet” is a misnomer in
>>>> this WinLink instance, as that port 22 protocol is historically and
>>>> normally unencrypted, and widely understood in the industry as such
>>>> (whereas SSH is encrypted).   It looks like the email client is
>> connecting
>>>> locally to an RMS Relay in that mode, which then connects to the CMS on
>> the
>>>> internet.
>>>>
>>>>
>>>>
>>>> --Stephen W9SK
>>>>
>>>>
>>>>
>>>> *From:* PSDR <psdr-bounces at hamwan.org <mailto:psdr-bounces at hamwan.org> > *On Behalf Of *Scott Currie
>>>> *Sent:* Monday, March 15, 2021 5:56 PM
>>>> *To:* Puget Sound Data Ring <psdr at hamwan.org <mailto:psdr at hamwan.org> >
>>>> *Subject:* Re: [HamWAN PSDR] Newbie
>>>>
>>>>
>>>>
>>>> This is not entirely true. Winlink does use TLS/SSL connections for some
>>>> things. The normal telnet connection is now SSL (will fallback to
>> non-SSL
>>>> if the connection fails). Also, RMS Gateway to the CMS is now SSL.
>> Telnet
>>>> P2P and telnet to RMS Relay is not SSL. I believe updates are also SSL
>> now.
>>>>
>>>>
>>>>
>>>> Winlink Express Link Test:
>>>>
>>>> Test started 2021/03/16 00:52 UTC
>>>>
>>>> Testing CMS telnet connection to cms.winlink.org <http://cms.winlink.org>  through port 8772...
>>>>     Successfully connected to a CMS through port 8772 in 253 Milliseconds
>>>>
>>>> Testing CMS SSL telnet connection to cms.winlink.org <http://cms.winlink.org>  through port
>> 8773...
>>>>     Successfully connected to a CMS through port 8773 in 311 Milliseconds
>>>>
>>>> Testing API service access through port 443 to api.winlink.org...
>>>>     Successfully performed API service to api.winlink.org <http://api.winlink.org>  through port
>> 443
>>>> in 756 Milliseconds
>>>>
>>>> Testing Autoupdate server access through port 443 to
>>>> autoupdate2.winlink.org...
>>>>     Successfully checked autoupdate server through port 443 in 439
>>>> Milliseconds
>>>>
>>>> Testing connection to web site - www.winlink.org:443 <http://www.winlink.org:443> 
>>>>     Successfully connected to www.winlink.org <http://www.winlink.org>  through port 443 in 47
>>>> Milliseconds
>>>>
>>>> Testing FTP connection to SFI site -
>>>> ftp://ftp.swpc.noaa.gov/pub/latest/SGAS.txt
>>>>     Successfully connected to
>> ftp://ftp.swpc.noaa.gov/pub/latest/SGAS.txt
>>>> through port 20/21 in 1522 Milliseconds
>>>>
>>>> Test completed successfully.
>>>>
>>>> -Scott, NS7C
>>>>
>>>>
>>>>
>>>> On Mon, Mar 15, 2021 at 5:45 PM Stephen Kangas <stephen at kangas.com <mailto:stephen at kangas.com> >
>> wrote:
>>>>
>>>> Phil, an example of the ham band traffic that Kenny mentioned is not
>>>> permitted by the FCC is encrypted communications traffic…this means the
>>>> majority of websites your visit today and many email hosters, since
>>>> websites commonly use TLS/SSL encryption (indicated by “https” in front
>> of
>>>> the URL in your browser address bar) or encrypted settings in your email
>>>> hoster & client.  Winlink does NOT use encryption, thus is legal, and is
>>>> the primary application for my ARES team using HamWAN.  As Kenny points
>>>> out, certain routers (not inexpensive home models) can be used to split
>>>> that traffic appropriately, but it is not an easy setup unless you have
>> a
>>>> background in data networks or cybersecurity…so it’s far easier to
>> either
>>>> use HamWAN just for your dedicated ARES laptop use or switch a cable
>> back
>>>> and forth using one pipe at a time.
>>>>
>>>>
>>>>
>>>> FWIW, Stephen W9SK
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From:* PSDR <psdr-bounces at hamwan.org <mailto:psdr-bounces at hamwan.org> > *On Behalf Of *Kenny Richards
>>>> *Sent:* Monday, March 15, 2021 12:49 PM
>>>> *To:* Puget Sound Data Ring <psdr at hamwan.org <mailto:psdr at hamwan.org> >
>>>> *Subject:* Re: [HamWAN PSDR] Newbie
>>>>
>>>>
>>>>
>>>> Just want to add two things to what Carl said already.
>>>>
>>>>
>>>>
>>>> 1) Line of sight means you can actually 'see' the HamWAN node, or at
>> least
>>>> you can with something like a pair of binoculars.
>>>>
>>>>
>>>>
>>>> 2) Remember that HamWAN is not meant to be a replacement for your home
>>>> internet. Be very conscious of what traffic you are putting over
>> HamWAN. I
>>>> don't recommend connecting it to your home network unless you are
>> familiar
>>>> enough with routing rules to limit what traffic goes out the HamWAN
>> link.
>>>>
>>>>
>>>>
>>>> Good luck,
>>>>
>>>> Kenny, KU7M
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Mon, Mar 15, 2021 at 12:40 PM <carl at n7kuw.com <mailto:carl at n7kuw.com> > wrote:
>>>>
>>>> Hi Phil,
>>>>
>>>> You can do all of the configuration while on the ground, but obviously
>> you
>>>> won’t have any signal. You don’t indicate what specific equipment you
>> have,
>>>> but if you have the mAnt30 dish and separate router/modem, make sure you
>>>> have the antenna connected before powering it up.
>>>>
>>>>
>>>>
>>>> As to trees, they are an absolute show stopper. You must have clear,
>>>> visual, line of sight to the HamWAN site you are shooting to. Hopefully
>> you
>>>> will have that, or can achieve that, from where you plan to mount the
>>>> dish.  As to “just over them”, a microwave shot consists of the direct,
>>>> pure line of sight, but also what is referred to as the Fresnel zone – a
>>>> cigar shaped “balloon” around the pure line of sight.  Items in the
>> Fresnel
>>>> zone (including trees) can reduce the amount of signal you have, so you
>> may
>>>> not get optimum performance, but some.
>>>>
>>>>
>>>>
>>>> In your initial post you commented about how to balance between your
>>>> regular internet and HamWAN for a Winlink node.  My suggestion would be
>> to
>>>> just leave it on one (whichever one) as the norm, and only switch to the
>>>> other if the one goes down.  You can also acquire routers that include
>>>> failover capability to automatically make that switch.  You can go more
>>>> advanced with load sharing and such between multiple connections, but
>> that
>>>> requires much better understanding of internet routing, and for a
>> winlink
>>>> node basic failover will serve your purpose.
>>>>
>>>>
>>>>
>>>> Good luck, let us know how things turn out.
>>>>
>>>> Carl, N7KUW
>>>>
>>>>
>>>>
>>>> *From:* PSDR <psdr-bounces at hamwan.org <mailto:psdr-bounces at hamwan.org> > *On Behalf Of *Phil Cornell via
>>>> PSDR
>>>> *Sent:* Monday, March 15, 2021 12:11 PM
>>>> *To:* psdr at hamwan.org <mailto:psdr at hamwan.org> 
>>>> *Subject:* [HamWAN PSDR] Newbie
>>>>
>>>>
>>>>
>>>> OK, I figured out my problem and I now have Winbox talking to the radio
>>>> and reporting status.  I's not linking to anything since the antenna is
>>>> still on the ground.  How much configuration can I do before mounting
>> it on
>>>> my roof.  The only question in my sight path may be some trees but I
>> think
>>>> I can aim just over them and get a signal.  My friend Bruce/WA7BAM will
>> be
>>>> helping with the antenna installation on Wed afternoon.  Making
>> progress...
>>>>
>>>>
>>>>
>>>> *Phil Cornell  *
>>>>
>>>> *W7PLC *
>>>>
>>>> *SHARES NCS590*
>>>>
>>>> *Hybrid Gateway W7PLC*
>>>>
>>>> *TCARES  VP*
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> *-Scott*
>>>> _______________________________________________
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>>>>
>>>
>>>
>>>
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-- 

John D. Hays
Kingston, WA

K7VE / WRJT-215

 

 

 

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