HydroLynx Systems, Inc.
Model 5052RD-K ALERT2 Receiver/Decoder
Page 18
A102688
To add client connections, move the cursor to the bottom of the file on the last blank line,
press the i key to start insert, type format type (ascii or binary) a space, the IP address
followed by a color (:) then the connection port, [Enter] to finish the line, then press [Esc]
to quit the insert. For example to make an ASCII connection to a client at IP 192.168.1.24
and port 4000 add the line:
ascii 192.169.1.24:4000
Add one line per client connection.
Save your changes and quit, type the command: :wq (no [Enter] required)
To quit without saving use type the command: :q! (no [Enter] required)
Reboot the ALERT2 decoder to make the changes effective. Type the command: reboot
Restart your ALERT2 Decoder Console connection and log in again.
4.1.6 ALERT2 Decoder SSH port change
The console network connection is made using SSH on port 22 by default. This can be
changed to allow firewall routing. To change the ssh port, edit the file:
/etc/ssh/sshd_config.
Before editing the file, enable decoder changes by making the file system read-write:
mount / -o remount,rw
Edit the network interface file with the command: vi /etc/ssh/sshd_config
The file below has the ssh port set to the default port 22.
# Package generated configuration file
# See the sshd_config(5) manpage for details
# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will
bind to
#ListenAddress ::
Position the cursor on the number 22 following the word Port on line 5, press x twice to
delete the number 22. Move the cursor after the space following the word Port then press
i to start insert mode, type the new IP address, then press [Esc] to quit the insert.
Port 4203
Save your changes and quit, type the command: :wq (no [Enter] required)
To quit without saving use type the command: :q! (no [Enter] required)
Reboot the ALERT2 decoder to make the changes effective. Type the command: reboot
Restart your ALERT2 Decoder Console connection and log in again.
4.1.7 ALERT2 Decoder Host Name
