source

The source IP address or address range to inspect for, in CIDR notation. To match with any address, specify ANY.

Specify an IP address or a block of IP addresses in Classless Inter-Domain Routing (CIDR) notation. Network Firewall supports all address ranges for IPv4 and IPv6.

Examples:

  • To configure Network Firewall to inspect for the IP address 192.0.2.44, specify 192.0.2.44/32.

  • To configure Network Firewall to inspect for IP addresses from 192.0.2.0 to 192.0.2.255, specify 192.0.2.0/24.

  • To configure Network Firewall to inspect for the IP address 1111:0000:0000:0000:0000:0000:0000:0111, specify 1111:0000:0000:0000:0000:0000:0000:0111/128.

  • To configure Network Firewall to inspect for IP addresses from 1111:0000:0000:0000:0000:0000:0000:0000 to 1111:0000:0000:0000:ffff:ffff:ffff:ffff, specify 1111:0000:0000:0000:0000:0000:0000:0000/64.

For more information about CIDR notation, see the Wikipedia entry Classless Inter-Domain Routing.