Re: [BEHAVE] [v6ops] protocols without need for ALG ?

"Heatley, Nick" <nick.heatley@ee.co.uk> Fri, 31 July 2015 07:23 UTC

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From: "Heatley, Nick" <nick.heatley@ee.co.uk>
To: Mark Smith <markzzzsmith@gmail.com>, Mikael Abrahamsson <swmike@swm.pp.se>
Thread-Topic: [v6ops] protocols without need for ALG ?
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Date: Fri, 31 Jul 2015 07:23:07 +0000
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Cc: v6ops list <v6ops@ietf.org>, "behave@ietf.org" <behave@ietf.org>
Subject: Re: [BEHAVE] [v6ops] protocols without need for ALG ?
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Same for me.

From: v6ops [mailto:v6ops-bounces@ietf.org] On Behalf Of Mark Smith
Sent: 31 July 2015 06:40
To: Mikael Abrahamsson
Cc: v6ops list; behave@ietf.org
Subject: Re: [v6ops] protocols without need for ALG ?


On 31 Jul 2015 3:11 pm, "Mikael Abrahamsson" <swmike@swm.pp.se<mailto:swmike@swm.pp.se>> wrote:
>
> On Thu, 30 Jul 2015, Owen DeLong wrote:
>
>>>   SSH/SCP - OK
>>>   syslog  - OK
>>>   TFTP    - OK ?
>>
>>
>> Should be OK, depending on which side is client. (client has to be the
>> private address/translated side of the connection).
>
>
> There are ALGs for TFTP from multiple vendors, and I seem to remember I had problem performing TFTP download from behind a NAT, but I could be mistaken. This should be investigated further.
>

I'm pretty sure you'd need an ALG for TFTP over NAT, as the file transfer itself takes place over unspecified and unpredictable ports. This caused me some grief in the past when trying to have a TFTP file transfer hold up a dial on demand link.

Regards,
Mark.

> --
> Mikael Abrahamsson    email: swmike@swm.pp.se<mailto:swmike@swm.pp.se>
>
>
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