Make it clear the REST API could be a security issue

The manpage for `podman system service` should mention that this
is not safe for external consumption unless you are comfortable
giving anyone who accesses it full root on the system.

Signed-off-by: Matthew Heon <mheon@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/docs/source/markdown/podman-system-service.1.md b/docs/source/markdown/podman-system-service.1.md
index 176d73eda..99fde8ce4 100644
--- a/docs/source/markdown/podman-system-service.1.md
+++ b/docs/source/markdown/podman-system-service.1.md
@@ -21,6 +21,10 @@ The REST API provided by **podman system service** is split into two parts: a co
 Documentation for the latter is available at *https://docs.podman.io/en/latest/_static/api.html*.
 Both APIs are versioned, but the server will not reject requests with an unsupported version set.
 
+Please note that the API grants full access to Podman's capabilities, and as such should be treated as allowing arbitrary code execution as the user running the API.
+As such, we strongly recommend against making the API socket available via the network.
+The default configuration (a Unix socket with permissions set to only allow the user running Podman) is the most secure way of running the API.
+
 Note: The default systemd unit files (system and user) change the log-level option to *info* from *error*. This change provides additional information on each API call.
 
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