StarTech.com ECS0016 IP Filtering, Modem initialization strings, Standard IP-Filter configuration

Instruction Manual

•Modem initialization strings

To override the standard modem initialization string either use the Management Console or the command line config tool

•Enabling Boot Messages on the Console

If you are not using a modem on the DB9 console port and instead wish to connect to it directly via a Null Modem cable you may want to enable verbose mode allowing you to see the standard linux start-up messages. This can be achieved with the following commands:

#/bin/config --set=config.console.debug=on

#/bin/config --run=console

#reboot

If at some point in the future you chose to connect a modem for dial- in out-of-band access the procedure can be reversed with the following commands.

#/bin/config --del=config.console.debug

#/bin/config --run=console

#reboot

IP - Filtering

Standard IP-Filter configuration:

The system uses the iptables utility to provide a stateful firewall of LAN traffic. By default, rules are automatically inserted to allow access to enabled services, and serial port access via enabled protocols. The com- mands which add these rules are contained in configuration files.

/etc/config/ipfilter

This is an executable shell script which is run whenever the LAN interface is brought up and whenever modifications are made to the iptables con- figuration as a result of CGI actions or the config command line tool.

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