netdev - Re: [PATCH net-next v4 0/5] Add support for locked bridge ports (for 802.1X)

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Date:   Wed, 23 Feb 2022 08:20:24 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Hans Schultz <schultz.hans@...il.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>,
        Shuah Khan <shuah@...nel.org>,
        Stephen Suryaputra <ssuryaextr@...il.com>,
        David Ahern <dsahern@...nel.org>,
        Ido Schimmel <idosch@...dia.com>,
        Petr Machata <petrm@...dia.com>,
        Amit Cohen <amcohen@...dia.com>,
        Po-Hsu Lin <po-hsu.lin@...onical.com>,
        Baowen Zheng <baowen.zheng@...igine.com>,
        linux-kernel@...r.kernel.org, bridge@...ts.linux-foundation.org,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next v4 0/5] Add support for locked bridge ports
 (for 802.1X)

On Wed, 23 Feb 2022 09:40:59 +0100 Hans Schultz wrote:
> > You still haven't answer my question. Is the data plane clear text in
> > the deployment you describe?  
> 
> Sorry, I didn't understand your question in the first instance. So as
> 802.1X is only about authentication/authorization, the port when opened
> for a host is like any other switch port and thus communication is in
> the clear.

Alright, thanks for clarifying!

> I have not looked much into macsec (but know ipsec), and that is a
> crypto (key) based connection mechanism, but that is a totally different
> ballgame, and I think it would for most practical cases require hardware 
> encryption.