User's Manual

machine, server or router and is compared with an incoming IP address to determine

whether to accept or reject the packet.

SysLog Server

A SysLog server monitors incoming Syslog messages and decodes the messages for

logging purposes.

TCP

(Transmission Control Protocol) is the transport protocol in TCP/IP that ensures

messages over the network are transmitted accurately and completely.

TCP/IP

TCP/IP (Transmission Control Protocol/Internet Protocol) is the main Internet

communications protocol. The TCP part ensures that data is completely sent and

received at the other end. Another part of the TCP/IP protocol set is UDP, which is

used to send data when accuracy and guaranteed packet delivery are not as important

(for example, in real-time video and audio transmission). The IP component of

TCP/IP provides data routability, meaning that data packets contain the destination

station and network addresses, enabling TCP/IP messages to be sent to multiple

networks within the LAN or in the WAN.

UDP

(User Datagram Protocol) is a protocol within TCP/IP that is used to transport

information when accurate delivery isn't necessary (for example, real-time video and

audio where packets can be dumped as there is no time for retransmitting the data).

Virtual Servers

Virtual servers are client servers (such as Web servers) that share resources with other

virtual servers (i.e., it is not a dedicated server).

WAN

WAN (Wide Area Network) is a communications network that covers a wide

geographic area such as a country (contrasted with a LAN, which covers a small area

such as a company building).