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If you perform a reinstallation of the AVG software, you will also enter the Setup
Utility after the VPN Gateway has rebooted.
SIP (Source IP)
The source IP address of a frame.
Address
Slave
A VPN Gateway that depends on a master device in the same cluster for proper
configuration.
SNMP (Simple
A network monitoring and control protocol. Data is passed from SNMP agents, which
Network
are hardware and/or software processes reporting activity in each network device
Management
(a VPN Gateway, for example), to the workstation console (or SNMP manager) used
Protocol)
to oversee the network. The SNMP agents return information in a MIB (Management
Information Base), which is a data structure that defines what information is
obtainable from the device.
SOCKS
A generic, proxy protocol for TCP/IP-based networking applications. The SOCKS
protocol provides a flexible framework for developing secure communications by
easily integrating other security technologies, e.g. SSL.
SOCKS includes two components, the SOCKS server and the SOCKS client. The
SOCKS server is implemented at the application layer, while the SOCKS client is
implemented between the application and transport layers. The basic purpose of the
protocol is to enable hosts on one side of a SOCKS server to gain access to hosts
on the other side of a SOCKS server, without requiring direct IP reachability.
SPort (Source
The source destination port, linking the incoming data to the correct service. For
Port)
example, port 80 for HTTP, port 443 for HTTPS, port 995 for POP3S.
SSH (Secure Shell) A program to log into another computer over a network, to execute commands in a
remote machine, and to move files from one machine to another. It provides strong
authentication and secure communications over insecure channels.
SSL (Secure
The SSL protocol is the leading security protocol on the Internet. It runs above the
Sockets Layer)
TCP/IP protocol and below higher-level protocols such as HTTP or IMAP. SSL uses
Protocol
TCP/IP on behalf of the higher-level protocols and, in the process, allows an SSL-
enabled server to authenticate itself to an SSL-enabled client.
SSL VPN client
Windows application with SOCKS support. When installed on a user's computer,
transparent access (not through the Portal page) to intranet applications is
enabled.
STP (Spanning
An algorithm used in transparent bridges that dynamically determines the best path
Tree Protocol)
from source to destination. It avoids bridge loops (two or more paths linking one
segment to another), which can cause the bridges to misinterpret results. The
algorithm creates a hierarchical "tree" that "spans" the entire network including all
switches. It determines all redundant paths and makes only one of them active at
any given time.
User Guide
STP (Spanning Tree Protocol)
April 2013
271
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