Just my 2c, I very much support Kevin’s argument.
Even though we are not (yet) verifying backends — because currently we _are_ in
a private LAN — we are planning to deploy parts of our application to public
cloud infrastructure soon, so it would be a quite important feature.
Regards,
Daniel
--
Daniel Schneller
Principal Cloud Engineer
CenterDevice GmbH | Hochstraße 11
| 42697 Solingen
tel: +49 1754155711 | Deutschland
[email protected] | www.centerdevice.de
Geschäftsführung: Dr. Patrick Peschlow, Dr. Lukas Pustina,
Michael Rosbach, Handelsregister-Nr.: HRB 18655,
HR-Gericht: Bonn, USt-IdNr.: DE-815299431
> On 6. May. 2017, at 19:18, Kevin McArthur <[email protected]> wrote:
>
> 1. The Snowden leaks and the whole "SSL added and removed here" issue, for
> example. TLS on internal networks is more important these days due to local
> network implants and other security issues on LANs.
>
> 2. Our use case is actually DigitalOcean where there is "private networking"
> but it is shared among many customers. Operating without TLS on this
> semi-private network would be unwise.
> 3. Most of the public tutorials for re-encrypt bridged TLS are simply
> incurring TLS overhead while providing no TLS security. (eg SSL on but,
> verify none enabled, verifyhost not set, etc)
>
> 4. Use cases like CDN proxy of public servers. Think Cloudflare's Full SSL
> (Strict) setup...
> --
>
> Kevin
> On 2017-05-05 7:20 PM, Igor Cicimov wrote:
>>
>>
>> On 6 May 2017 2:04 am, "Kevin McArthur" <[email protected]
>> <mailto:[email protected]>> wrote:
>> When doing tls->haproxy->tls (bridged https) re-encryption with SNI, we need
>> to verify the backend certificate against the SNI value requested by the
>> client.
>>
>> Something like server options:
>>
>> server app1 app1.example.ca:443 <http://app1.example.ca:443/> ssl no-sslv3
>> sni ssl_fc_sni verify required verifyhost ssl_fc_sni
>>
>> However, the "verifyhost ssl_fc_sni" part doesn't work at current. Is there
>> any chance I could get this support patched in?
>>
>> Most folks seem to be either ignoring the backend server validation, setting
>> verify none, or are stripping tls altogether leaving a pretty big security
>> hole.
>> Care to elaborate why is this a security hole if the backend servers are in
>> internal LAN which usually is the case when terminating ssl on the proxy?
>>
>> --
>>
>> Kevin McArthur
>>
>
