You will be fine. Sounds like there is no way for someone on the Internet to connect to your system. This warning really applies to all OS's :) Use a firewall, as you are on your machine and your router.
Fix return-local-addr warning in DmxUtils.C phrase()
Fix XKeycodeToKeysym deprecation warning
Fix misleading strncat usage in RFCMIME.c
Fix non-root installation: ignore chown/chmod errors
fix-tmpnam-security
configure: Add --with-pam-dir option for configurable PAM directory
dtinfo: Fix config.h include path issue