Lantronix MSS4-D, Руководство по установке

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TCP/IP Configuration Configuration
4-4
The MSS also allows you to set a default domain name to be appended to any host name
for the purpose of name resolution. When a user types a host name, the MSS will add this
domain name and attempt the connection. Name checking applies to any MSS commands
that require text name resolution, such as Telnet, Rlogin, and Ping. To set the default
domain, enter the Change Domain command followed by the desired domain name in
quotes
Figure 4-5: Configuring the Default Domain
Note:
Some nameservers will not resolve host names that do not have a
domain at the end.
4.2.5 IP Security
The IP Security feature allows the system administrator to restrict incoming and outgoing
TCP/IP sessions and access to the serial ports. Every time a connection is requested, the
MSS will check the IP local host table to determine whether or not that connection should
be allowed. Connections are allowed or denied based upon the source IP address (for
incoming connections) or the destination IP address (for outgoing connections).
The IP local host table stores a list of allowed (Enabled) and denied (Disabled) IP addresses
in either the form of individual addresses (e.g. 192.71.2.88) or wildcards, with a 255 in one
or more of the trailing segments (e.g. 192.255.255.255). Wildcard addresses match all
addresses in that range. To add an entry, specify an IP address and whether to allow or deny
connections.
Connections can also be denied based on which port is attempting the connection and
whether the connections are incoming or outgoing. For example, the command below
disables outgoing connections for all addresses between 192.0.1.1 and 192.0.1.254 from all
four serial ports.
Figure 4-6: IP Security Command
See Change IPSecurity in the MSS Reference Manual for more information on this
command.
To view the host table entries, enter the Show IPsecurity command. To remove an entry,
use the Delete IPSecurity command followed by the IP address that you want to remove.
Local>> CHANGE SERVER DOMAIN “xyzcorp.com”
Local>> CHANGE IPSECURITY 192.0.1.255 OUTGOING DISABLED