U
- UDP protocol, displaying statistics, How to Display Statistics by Protocol
- /usr/sbin/6to4relay command, How to Configure a 6to4 Tunnel to a 6to4 Relay Router
- /usr/sbin/in.rdisc program, description, ICMP Router Discovery (RDISC) Protocol
- /usr/sbin/in.routed daemon
- description, Routing Information Protocol (RIP)
- space-saving mode, Routing Information Protocol (RIP)
- /usr/sbin/inetd daemon, services started by, Monitoring and Modifying Transport Layer Services
- /usr/sbin/ping command, How to Determine if a Host Is Dropping Packets
- description, Probing Remote Hosts With the ping Command
- running, How to Determine if a Host Is Dropping Packets
- syntax
- Probing Remote Hosts With the ping Command
- Probing Remote Hosts With the ping Command