Version 7.2 177 Mediant 800B Gateway & E-SBC
User's Manual 13. Security
2. Click New; the following dialog box appears:
Figure 13-1: Firewall Table - Add Dialog Box
3. Configure a firewall rule according to the parameters described in the table below.
4. Click Apply, and then reset the device with a save-to-flash for your settings to take
effect.
Table 13-1: Firewall Table Parameter Descriptions
Parameter Description
Match
Index Defines an index number for the new table row.
Note: Each row must be configured with a unique index.
Source IP
source-ip
[AccessList_Source_IP]
Defines the IP address (or DNS name) or a specific host name
of the source network from where the device receives the
incoming packet.
The default is 0.0.0.0.
Source Port
src-port
[AccessList_Source_Port]
Defines the source UDP/TCP ports of the remote host from
where the device receives the incoming packet.
The valid range is 0 to 65535. The default is 0.
Note: When set to 0, this field is ignored and any source port
matches the rule.
Prefix Length
prefixLen
[AccessList_PrefixLen]
(Mandatory) Defines the IP network mask - 32 for a single
host or the appropriate value for the source IP addresses.
A value of 8 corresponds to IPv4 subnet class A (network
mask of 255.0.0.0).
A value of 16 corresponds to IPv4 subnet class B (network
mask of 255.255.0.0).
A value of 24 corresponds to IPv4 subnet class C (network
mask of 255.255.255.0).
The IP address of the sender of the incoming packet is
trimmed in accordance with the prefix length (in bits) and then
compared to the parameter ‘Source IP’.
The default is 0 (i.e., applies to all packets). You must change
this value to any of the above options.
Note: A value of 0 applies to all packets, regardless of the
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