Kerio Tech KERIO WINROUTE FIREWALL 6 - Manual (Page 363)

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• RST (Reset) — request on termination of a current connection and on initiation
of a new one
• URG (Urgent) — urgent packet
• PSH (Push) — request on immediate transmission of the data to upper TCP/IP
layers
• FIN (Finalize) — connection finalization
TCP/IP
Name used for all traffic protocols used in the Internet (i.e. for IP, ICMP, TCP, UDP, etc.).
TCP/IP does not stand for any particular protocol!
TLS
Transport Layer Security. New version of SSL protocol. This version is approved by the
IETF and it is accepted by all the top IT companies (i.e. Microsoft Corporation).
UDP
User Datagram Protocol is a transmission protocol which transfers data through individ-
ual messages (so called datagrams). It does not establish new connections nor it provides
reliable and sequential data delivery, nor it enables error correction or data stream con-
trol. It is used for transfer of small-sized data (i.e. DNS queries) or for transmissions
where speed is preferred from reliability (i.e. realtime audio and video files transmis-
sion).
VPN
Virtual Private Network, VPN represents secure interconnection of private networks (i.e.
of individual offices of an organization) via the Internet. Traffic between both networks
(so called tunnel) is encrypted. This protects networks from tapping. VPN incorpo-
rates special tunneling protocols, such as PPTP (Point-to-Point Tunneling Protocol) and
Microsoft’s IPSec.
WinRoute contains a proprietary VPN implementation called Kerio VPN.
WINS
The WINS (Windows Internet Name Service) service is used for resolution of hostnames to
IP addresses within Microsoft Windows networks.