Enabling Or Disabling Firewall; Setting The Default Filtering Mode Of Firewall; Applying Acl On The Interface - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide

6.2.1 Enabling or Disabling Firewall

Perform the following configuration in system view.
Table 6-1 Enable or disable firewall
Enable firewall
Disable firewall
By default, firewall is disabled.

6.2.2 Setting the Default Filtering Mode of Firewall

To set the default filtering mode of firewall means when there is no appropriate rule to
judge whether the user packet can pass, the policy adopted by the firewall is to permit
the packet to pass or not.
Perform the following configuration in system view.
Table 6-2 Set the default filtering mode of firewall
Set the default filtering mode as
permitting the packet to pass
Set the default filtering mode as denying
the packet to pass
When firewall is enabled, the default is to permit the packet to pass.

6.2.3 Applying ACL on the Interface

When applying access rule on the interface, the time range filtering principle is followed
at the same time. Moreover, access rule can be specified respectively for transmitting
and receiving packets on the interface.
Perform the following configuration in interface view.
Operation
Operation
3Com Corporation
6-6
Chapter 6 Firewall Configuration
Command
firewall enable
undo firewall enable
Command
firewall default permit
firewall default deny