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website: document the new TLS changes

This commit is contained in:
Armon Dadgar 2015-05-11 16:22:10 -07:00
parent 4c93091f45
commit 97c87f4e4d
2 changed files with 18 additions and 1 deletions
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11
website/source/docs/agent/encryption.html.markdown
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@ -64,7 +64,8 @@ using OpenSSL. Note: client certificates must have
for client and server authentication.
TLS can be used to verify the authenticity of the servers or verify the authenticity of clients.
These modes are controlled by the [`verify_outgoing`](/docs/agent/options.html#verify_outgoing)
These modes are controlled by the [`verify_outgoing`](/docs/agent/options.html#verify_outgoing),
[`verify_server_hostname`](/docs/agent/options.html#verify_server_hostname),
and [`verify_incoming`](/docs/agent/options.html#verify_incoming) options, respectively.
If [`verify_outgoing`](/docs/agent/options.html#verify_outgoing) is set, agents verify the
@ -74,6 +75,14 @@ by the certificate authority present on all agents, set via the agent's
appropriate key pair set using [`cert_file`](/docs/agent/options.html#cert_file) and
[`key_file`](/docs/agent/options.html#key_file).
If [`verify_server_hostname`](/docs/agent/options.html#verify_server_hostname) is set, then
outgoing connections perform hostname verification. All servers must have a certificate
valid for "server.\<datacenter\>.\<domain\>" or the client will reject the handshake. This is
a new configuration as of 0.5.1, and it is used to prevent a compromised client from being
able to restart in server mode and perform a MITM attack. New deployments should set this
to true, and generate the proper certificates, but this is defaulted to false to avoid breaking
existing deployments.
If [`verify_incoming`](/docs/agent/options.html#verify_incoming) is set, the servers verify the
authenticity of all incoming connections. All clients must have a valid key pair set using
[`cert_file`](/docs/agent/options.html#cert_file) and

8
website/source/docs/agent/options.html.markdown
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@ -584,6 +584,14 @@ definitions support being updated during a reload.
will not make use of TLS for outgoing connections. This applies to clients and servers
as both will make outgoing connections.
* <a name="verify_server_hostname"></a><a href="#verify_server_hostname">`verify_server_hostname`</a> - If set to
true, Consul verifies for all outgoing connections that the TLS certificate presented by the servers
matches "server.<datacenter>.<domain>" hostname. This implies `verify_outgoing`.
By default, this is false, and Consul does not verify the hostname of the certificate, only
that it is signed by a trusted CA. This setting is important to prevent a compromised
client from being restarted as a server, and thus being able to perform a MITM attack
or to be added as a Raft peer. This is new in 0.5.1.
* <a name="watches"></a><a href="#watches">`watches`</a> - Watches is a list of watch
specifications which allow an external process to be automatically invoked when a
particular data view is updated. See the