Chapter 9 Firewall
NR2101 User’s Guide
84
Figure 70 Add Entry
The following table describes the labels in this screen.
Click IPv4/IPv6 Firewall Entries to view and configure IPv4/IPv6 settings.
Table 33 Create New Firewall Entry
LABEL DESCRIPTION
IP Family
Select between IPv4 and IPv6. Compared to IPv4, IPv6 (Internet Protocol version 6) is
designed to enhance IP address size and features. The increase in IPv6 address size to 128 bits
(from the 32-bit IPv4 address) allows up to 3.4 x 1038 IP addresses. The NR2101 can use IPv4/
IPv6 dual stack to connect to IPv4 and IPv6 networks, and supports IPv6 rapid deployment
(6RD).
IPv4 Source
Address
If you want the firewall rule to apply to a specific IP address, enter the source device’s IPv4
address here.
IPv4 Source
Subnet mask
Enter the IPv4 Source subnet mask here.
IPv6 Address
If you want the firewall rule to apply to a specific IP address, enter the source device’s IPv6
address here.
IPv6 Prefix Length
The prefix length indicates what the left-most part of the IP address is the same for all
computers in the network, that is, the network address.
Enter the address prefix length to specify how many most significant bits in an IPv6 address
compose the network address.
Protocol
Select the protocol (None, TCP_UDP, TCP, UDP, ICMP, or ESP) used to transport the packets for
which you want to apply the rule.
Cancel Click this to exit this screen without saving.
OK Click this to save your changes.
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