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May 2023, Week 3

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Subject:
Re: Reflection Fast File Transfer
From:
Craig Lalley <[log in to unmask]>
Reply To:
Craig Lalley <[log in to unmask]>
Date:
Tue, 16 May 2023 17:04:15 +0000
Content-Type:
text/plain
Parts/Attachments:
text/plain (62 lines) 
Well look at that!   Thank you Rob!

-Craig
 

    On Tuesday, May 16, 2023 at 09:45:30 AM PDT, Robert Liesenfeld <[log in to unmask]> wrote:  
 
 On further investigation, I found this discussion in the archives of
comp.sys.hp.mpe (which seems that it may at one point have been one in the
same with this mailing list?) -
https://groups.google.com/g/comp.sys.hp.mpe/c/OuQWycjA0IM/m/PxtT7u5S7jgJ

I tried the transfer again and indeed, port 30767 is open on the PC side -
that is, the computer running Reflection.  The MPE side connects to that
port.  Assuming I've read the packet captures correctly, you need to allow
30767 inbound on your firewall for Fast File Transfer to work.  Apparently
the old file transfer protocol would just use the existing connection
(whether Telnet or NS/VT or serial or what have you); fast file transfers
can be disabled in Reflection under File Transfer -> Setup -> WRQ tab ->
Fast File Transfer set to Never.  I have confirmed via packet capture that
this mode doesn't open any new connections.

-Rob

On Tue, May 16, 2023 at 9:19 AM Robert Liesenfeld <[log in to unmask]> wrote:

> I'm not sure how the negotiation works, but I did a network capture and
> transferred a file a few times using WRQ Fast File Transfer; the only ports
> consistently in use were 23 (Telnet) and 30767.  I suspect the latter was
> being used for file transfer.
>
> Maybe this is a useful data point, maybe not.
>
> -Rob
>
> On Tue, May 16, 2023 at 6:08 AM Craig Lalley <
> [log in to unmask]> wrote:
>
>> Everyone,
>> I am struggling with Attachmate(WRQ) Reflection documentation.    I am
>> looking for the ports that need to be open for Fast File Transfer or any
>> documentation on how Fast File Transfers work.
>> Memory tells me VT-MGR requires port 1537 and Fast File Transfer requires
>> 1570, but my memory is fading.
>> Can someone please explain to me how fast file transfer negotiations work?
>>
>> TIA,
>>
>> -Craig
>>
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