Chapter 3: Accessing the PM PDU via the Web Manager 27
•If ICMP is selected from the Protocol menu, the ICMP Type pull-down menu is activated.
• If an administrator enters the Ethernet interface
(eth0 or eth1) in the input or output interface
fields and selects an option (2nd and further packets, All packets and fragments or
Unfragmented packets and 1st packets) from the Fragments pull-down menu, the target action
is performed on packets from or to the specified interface if they meet the criteria in the
selected Fragments menu option.
To add a chain:
1. Select Network - Fire
wall.
2. Select either IPv4 Filter T
able or IPv6 Filter Table as needed.
3. Click Add.
4. Enter the name of the chain to be added.
5. Click Save.
NOTE: Spaces are not allowed in the chain name.
6. Add one or more rules to complete the chain configuration.
To change the policy for a default chain:
NOTE: User-defined chains cannot be edited. To rename a user-added chain, delete it and create a new one.
1. Select Network - Firewall.
2. Select either IPv4 Filter T
able or IPv6 Filter Table as needed.
3. Select the checkbox next to the name of the chain you want to change (FORW
ARD, INPUT,
OUTPUT).
4. Click Change Policy and select Ac
cept or Drop from the drop-down menu.
5. Click Save.
T
o add a rule:
1. Select Network - Fire
wall.
2. Select either IPv4 Filter T
able or IPv6 Filter Table as needed.
3. From the chain list, click the name of the chain you want
to add a rule to.
Table 3.3: Firewall Configuration - TCP and UDP Options Fields
Field/Menu Option Definition
Source Port
- or -
Destination Port
A single IP address or a range of IP addresses.
TCP Flags [TCP only] SYN (synchronize), ACK (acknowledg
e), FIN (finish), RST (reset),
URG (urgent) and PSH (push). The conditions in the pull-down menu for each
flag are: Any, Set or Unset.
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