A network is two or more devices connected through a medium. This medium is usually through signals sent by wire (Fiber, UTP, STP, Coaxial, etc.), or over the air by varying frequencies of radio waves. (UHF, VHF, HF, etc.)

The networks will use protocols (or set rules of communicating) to transmit, and receive information. The most common one being TCP/IP.

A basic network will have file sharing, or print sharing.

Use this tag for general questions about network connectivity:

• configuring network interfaces
• diagnosing network issues
• establishing a network connection
• etc.

Questions about networking between a unix system and a non-unix system are on-topic unless the issue is clearly on the non-unix side.

Most questions should also have one or more tag to identify the aspect or protocol that the question is about:

• Physical protocols and interfaces: ethernet, wifi, …
• Link and transport protocols: ppp, atm, ip, ipv6, ipsec, tcp, udp, icmp, ssl, socks, pptp, …
• Application protocols: bittorrent, dhcp, dns, ftp, http, nntp, ntp, samba, smtp, snmp, ssh, …

Do not use the networking tag if your question is specifically about a networked application and not about network configuration. For example:

• How do I configure my Linux firewall to let FTP through? ftp networking iptables
• How can I upload only files that are more recent than the remote version over FTP? ftp timestamps

A network is two or more devices connected through a medium. This medium is usually through signals sent by wire (Fiber, UTP, STP, Coaxial, etc.), or over the air by varying frequencies of radio waves. (UHF, VHF, HF, etc.)

The networks will use protocols (or set rules of communicating) to transmit, and receive information. The most common one being TCP/IP.

A basic network will have file sharing, or print sharing.