MSS User Guide | 4: Configuration |
IP Security
IP security allows the system administrator to restrict incoming and outgoing TCP/IP sessions and access to the serial port. Connections are allowed or denied based upon the source IP address (for incoming connections) or the destination IP address (for outgoing connections).
IP security information can be added to the IP local host table. To add an entry, specify an IP address and whether to allow (Enabled) or deny (Disabled) connections. For example, the command below disables outgoing connections for all addresses between
192.168.0.1 and 192.168.0.254.
Figure 4-11: IP Security Command
Local>> CHANGE IPSECURITY 192.168.0.255 DISABLED 
Single addresses can also be specified. See Change IPSecurity in the MSS Reference Manual for more information.
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.
WINS
If WINS is enabled, the MSS will broadcast a WINS name announcement at boot time, and answer broadcast WINS name queries. Other hosts can locate the MSS this way. The MSS will rebroadcast whenever its IP address or name changes.
Figure 4-12: Enabling WINS for MSS-VIA and MSS4
Local>> CHANGE SERVER WINS ENABLED 
Figure 4-13: Enabling WINS for MSS100
Local>> CHANGE WINS ENABLED 
SNMP
The MSS supports the SNMP network protocol, which allows hosts on the network to query nodes for counters and network statistics and to change some parameters on those nodes. The form of these requests is documented by RFC 1098. The list of items that can be queried and/or set and the type of data used, such as integer and string, are both documented in various Management Information Bases (MIBs). MIBs cover a variety of things, such as counters and IP address resolution tables.
The MSS supports the following MIBs:
Table 4-1: Supported MIBS
System, Interface, | |
| Address Translation, IP, |
| ICMP, TCP, and UDP, |
| but not the EGP group. |
|
|
Character MIB (RFC | All |
1318) | devices. |
|
|
RS232 MIB (RFC | All objects |
1317) | objects). |
|
|
