Citrix Systems 9.2 Prefixes for IPV4 Addresses and IP Subnets, Operations for IPV4 Addresses

150 Citrix NetScaler Policy Configuration and Reference Guide

Note: As the preceding example shows, if you configure an advanced expression on the command line, you must escape the quotation marks. For more information, see “Configuring Advanced Expressions in a Policy,” on page 57.

Prefixes for IPV4 Addresses and IP Subnets

The following table describes prefixes that return IPv4 addresses and subnets and segments of the addresses.

You can apply the IP address-specific operations to this prefix, as described in this chapter. You can also apply numeric operations. For more information on numeric operations, see “Basic Operations on Expression Prefixes,” on page 44 and “Compound Operations for Numbers,” on page 48.

Prefixes That Evaluate IP and MAC Addresses

Prefix	Description
CLIENT.IP.SRC	Returns the source IP of the current packet as an IP
	address or as a number.
CLIENT.IP.DST	Returns the destination IP of the current packet as
	an IP address or as a number.
SERVER.IP.SRC	Returns the source IP of the current packet as an IP
	address or as a number.
SERVER.IP.DST	Returns the destination IP of the current packet as
	an IP address or as a number.

Operations for IPV4 Addresses

An IPv4 address is a traditional format that uses four numeric values that are separated by periods, for example, nn.nnn.nn.nnn.

The following table describes operations on IP addresses.

Operations on IPV4 Addresses

Prefix	Description
ip address.EQ(address)	Returns a Boolean TRUE if the IP address value is
	same as the address argument. The following
	example checks whether the client's destination IP
	address is equal to 10.100.10.100:
	client.ip.dst.eq(10.100.10.100)