Allied Telesis AT-S62 - Manual (Page 342)

Chapter 21: Networking Stack
Section II: Advanced Operations 342
This table is for viewing purposes only. The columns in the table
are defined here.
Total Number of TCP Listening sockets
The number of active listening sockets. There can be a maximum
of three listening sockets. One is for the Telnet server, another for
SSH, and the last for the web browser server. If a server is disabled,
its listening socket does not appear in the table.
Total Number of TCP connections
The number of active Telnet, SSH, and web browser connections
to the switch.
Index
The internal socket ID number assigned to the connection.
Local Address
The IP address of the switch, followed by the TCP port number
used by the switch for the connection. The two values are divided
by a colon, as illustrated in Figure 122. The port number indicates
the type of TCP connection. A port number of 23 indicates a Telnet
connection, 22 an SSH connection, and 80 or 443 a web browser
HTTP or HTTPS connection, respectively.
Figure 122 IP Address and TCP Port Number
Foreign Address
The IP address of the management workstation that initiated the
connection, followed by the station’s TCP port number.
State
The state of the TCP connection. A state of ESTABLISHED signals a
successful TCP connection between the switch and the
management workstation. For definitions of all the TCP states,
refer to RFC-793.
The entries for the listening sockets for the Telnet, SSH, and web
browser servers are identified in the table with a TCP state of
LISTEN. If you disable a server on the switch, its corresponding
LISTEN entry is removed from the table. Disabling all the servers
leaves the table empty. (The SSH server is disabled by default on
the switch.)
169.254.37.1:23
IP Address
TCP Port
Number