Monitor last lines of messages file SYSTEMD_LOG_COLOR=false journalctl --no-hostname --follow --boot Output log in a colored fashion SYSTEMD_LOG_COLOR=false grc journalctl --no-hostname --follow --boot Monitor log for Intrusion Detection System Monitor last lines of DDOS protection journalctl --no-hostname --follow --boot --unit fastnetmon.service Monitor last lines of Dynamic Host Control Protocol (DHCP) Monitor last lines of DHCP server journalctl --no-hostname --follow --boot --unit isc-dhcp-server.service Monitor last lines of DHCP client journalctl --no-hostname --follow --boot --unit "dhclient@*.service" Show DHCP client log on specific interface journalctl --no-hostname --follow --boot --unit "dhclient@$6.service" Monitor last lines of Dynamic Host Control Protocol IPv6 (DHCPv6) Monitor last lines of DHCPv6 server journalctl --no-hostname --follow --boot --unit isc-dhcp-server6.service Monitor last lines of DHCPv6 client journalctl --no-hostname --follow --boot --unit "dhcp6c@*.service" Show DHCPv6 client log on specific interface journalctl --no-hostname --follow --boot --unit "dhcp6c@$6.service" Monitor last lines of flow-accounting log journalctl --no-hostname --boot --follow --unit uacctd.service Monitor last lines of IPoE server log journalctl --no-hostname --boot --follow --unit accel-ppp@ipoe.service Monitor last lines of Linux Kernel log journalctl --no-hostname --boot --follow --dmesg Monitor last lines of Next Hop Resolution Protocol (NHRP) log journalctl --no-hostname --boot --follow --unit opennhrp.service Monitor last lines of Network Time Protocol (NTP) log journalctl --no-hostname --boot --follow --unit chrony.service Monitor last lines of PPPoE interface log journalctl --no-hostname --boot --follow --unit "ppp@pppoe*.service" Monitor last lines of PPPoE log for specific interface interfaces pppoe journalctl --no-hostname --boot --follow --unit "ppp@$5.service" Monitor last lines of PPPoE server log journalctl --no-hostname --boot --follow --unit accel-ppp@pppoe.service Monitor log for Routing Protocol Monitor log for OSPF journalctl --follow --no-hostname --boot /usr/lib/frr/ospfd Monitor log for OSPF for IPv6 journalctl --follow --no-hostname --boot /usr/lib/frr/ospf6d Monitor log for BGP journalctl --follow --no-hostname --boot /usr/lib/frr/bgpd Monitor log for RIP journalctl --follow --no-hostname --boot /usr/lib/frr/ripd Monitor log for RIPng journalctl --follow --no-hostname --boot /usr/lib/frr/ripngd Monitor log for static route journalctl --follow --no-hostname --boot /usr/lib/frr/staticd Monitor log for Multicast protocol journalctl --follow --no-hostname --boot /usr/lib/frr/pimd Monitor log for ISIS journalctl --follow --no-hostname --boot /usr/lib/frr/isisd Monitor log for NHRP journalctl --follow --no-hostname --boot /usr/lib/frr/nhrpd Monitor log for BFD journalctl --follow --no-hostname --boot /usr/lib/frr/bfdd Monitor log for MPLS journalctl --follow --no-hostname --boot /usr/lib/frr/ldpd Monitor last lines of MACsec journalctl --no-hostname --boot --follow --unit "wpa_supplicant-macsec@*.service" Monitor last lines of specific MACsec interface interfaces macsec SRC=$(cli-shell-api returnValue interfaces macsec "$5" source-interface); journalctl --no-hostname --boot --follow --unit "wpa_supplicant-macsec@$SRC.service" Monitor last lines of Router Advertisement Daemon (radvd) log journalctl --no-hostname --boot --follow --unit radvd.service Monitor last lines of Simple Network Monitoring Protocol (SNMP) log journalctl --no-hostname --boot --follow --unit snmpd.service Monitor last lines of Secure Shell (SSH) log journalctl --no-hostname --boot --follow --unit ssh.service Monitor last lines of SSTP client log journalctl --no-hostname --boot --follow --unit "ppp@sstpc*.service" Monitor last lines of SSTP client log for specific interface interfaces sstpc journalctl --no-hostname --boot --follow --unit "ppp@$5.service" Monitor Virtual Private Network (VPN) services Monitor last lines of ALL VPNs journalctl --no-hostname --boot --follow --unit strongswan.service --unit accel-ppp@*.service --unit ocserv.service Monitor last lines of IPsec log journalctl --no-hostname --boot --follow --unit strongswan.service Monitor last lines of L2TP log journalctl --no-hostname --boot --follow --unit accel-ppp@l2tp.service Monitor last lines of OpenConnect log journalctl --no-hostname --boot --follow --unit ocserv.service Monitor last lines of PPTP log journalctl --no-hostname --boot --follow --unit accel-ppp@pptp.service Monitor last lines of SSTP log journalctl --no-hostname --boot --follow --unit accel-ppp@sstp.service Monitor last lines of Vector Packet Processor (VPP) log journalctl --no-hostname --boot --unit vpp.service Monitor last lines of Virtual Router Redundancy Protocol (VRRP) log journalctl --no-hostname --boot --unit keepalived.service Monitor last lines of Webproxy log journalctl --no-hostname --boot --unit squid.service