Packet-filtering
This section describes a sample configuration for firewall. When you have finished, the firewall is configured on the R1 router, as shown in the following figure.
This section includes the following examples:
- Filtering on source IP address
- Filtering on source and destination IP addresses
- Filtering on source IP address and destination protocol
- Defining a network-to-network filter
- Filtering on source MAC address
- Excluding an address
- Activating firewall rules during specific time periods
- Limiting traffic rates
- Matching TCP flags
- Matching ICMP type names
- Matching groups
- Matching recently seen sources
- Configuring stateful behavior per rule set