Header - AWS Network Firewall

Header

The basic rule criteria for AWS Network Firewall to use to inspect packet headers in stateful traffic flow inspection. Traffic flows that match the criteria are a match for the corresponding StatefulRule .

Contents

Destination

The destination 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.

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.

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

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Pattern: ^.*$

Required: Yes

DestinationPort

The destination port to inspect for. You can specify an individual port, for example 1994 and you can specify a port range, for example 1990:1994. To match with any port, specify ANY.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Pattern: ^.*$

Required: Yes

Direction

The direction of traffic flow to inspect. If set to ANY, the inspection matches bidirectional traffic, both from the source to the destination and from the destination to the source. If set to FORWARD, the inspection only matches traffic going from the source to the destination.

Type: String

Valid Values: FORWARD | ANY

Required: Yes

Protocol

The protocol to inspect for. To specify all, you can use IP, because all traffic on AWS and on the internet is IP.

Type: String

Valid Values: IP | TCP | UDP | ICMP | HTTP | FTP | TLS | SMB | DNS | DCERPC | SSH | SMTP | IMAP | MSN | KRB5 | IKEV2 | TFTP | NTP | DHCP

Required: Yes

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.

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.

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

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Pattern: ^.*$

Required: Yes

SourcePort

The source port to inspect for. You can specify an individual port, for example 1994 and you can specify a port range, for example 1990:1994. To match with any port, specify ANY.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Pattern: ^.*$

Required: Yes

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: