Update README.md

README.md

@@ -80,6 +80,22 @@ systemd-netlogd reads configuration files named `/etc/systemd/netlogd.conf` and
 
        TLSCertificateAuthMode=
                Specifies whether to validate the certificate. Takes one of no, allow, deny, warn. Defaults to 'no' which disables certificate validation.
+               
+       KeepAlive=
+               Takes a boolean argument. If true, the TCP/IP stack will send a keep alive message after 2h (depending on the configuration of /proc/sys/net/ipv4/tcp_keepalive_time)
+               for all TCP streams accepted on this socket. This controls the SO_KEEPALIVE socket option (see socket(7) and the TCP Keepalive HOWTO for details.) Defaults to false.
+
+       KeepAliveTimeSec=
+               Takes time (in seconds) as argument. The connection needs to remain idle before TCP starts sending keepalive probes. This controls the TCP_KEEPIDLE socket option (see socket(7)
+               and the TCP Keepalive HOWTO for details.) Default value is 7200 seconds (2 hours).
+
+       KeepAliveIntervalSec=
+               Takes time (in seconds) as argument between individual keepalive probes, if the socket option SO_KEEPALIVE has been set on this socket. This controls the TCP_KEEPINTVL 
+               socket option (see socket(7) and the TCP Keepalive HOWTO for details.) Default value is 75 seconds.
+               
+       KeepAliveProbes=
+              Takes an integer as argument. It is the number of unacknowledged probes to send before considering the connection dead and notifying the application layer. This controls the
+              TCP_KEEPCNT socket option (see socket(7) and the TCP Keepalive HOWTO for details.) Default value is 9.
 
    Optional settings