ZyXEL Communications P-334U, P-335U manual 162

P-334U/P-335U User’s Guide

Table 54 Security > VPN > Rule Setup: Manual (continued)

LABEL	DESCRIPTION
DNS Server (for	If there is a private DNS server that services the VPN, type its IP address here.
IPSec VPN)	The ZyXEL Device assigns this additional DNS server to the ZyXEL Device's
	DHCP clients that have IP addresses in this IPSec rule's range of local addresses.
	A DNS server allows clients on the VPN to find other computers and servers on
	the VPN by their (private) domain names.
Local Policy	Local IP addresses must be static and correspond to the remote IPSec router's
	configured remote IP addresses.
	Two active SAs can have the same configured local or remote IP address, but not
	both. You can configure multiple SAs between the same local and remote IP
	addresses, as long as only one is active at any time.
	In order to have more than one active rule with the Secure Gateway Address
	field set to 0.0.0.0, the ranges of the local IP addresses cannot overlap between
	rules.
	If you configure an active rule with 0.0.0.0 in the Secure Gateway Address field
	and the LAN’s full IP address range as the local IP address, then you cannot
	configure any other active rules with the Secure Gateway Address field set to
	0.0.0.0.
Local Address	For a single IP address, enter a (static) IP address on the LAN behind your ZyXEL
	Device.
	For a specific range of IP addresses, enter the beginning (static) IP address, in a
	range of computers on your LAN behind your ZyXEL Device.
	To specify IP addresses on a network by their subnet mask, enter a (static) IP
	address on the LAN behind your ZyXEL Device.
Local Address	When the local IP address is a single address, type it a second time here.
End /Mask	When the local IP address is a range, enter the end (static) IP address, in a range
	of computers on the LAN behind your ZyXEL Device.
	When the local IP address is a subnet address, enter a subnet mask on the LAN
	behind your ZyXEL Device.
Local Port Start	0 is the default and signifies any port. Type a port number from 0 to 65535. Some
	of the most common IP ports are: 21, FTP; 53, DNS; 23, Telnet; 80, HTTP; 25,
	SMTP; 110, POP3.
Local Port End	Enter a port number in this field to define a port range. This port number must be
	greater than that specified in the previous field. If Local Port Start is left at 0,
	Local Port End will also remain at 0.
Remote Policy	Remote IP addresses must be static and correspond to the remote IPSec router's
	configured local IP addresses. The remote fields do not apply when the Secure
	Gateway IP Address field is configured to 0.0.0.0. In this case only the remote
	IPSec router can initiate the VPN.
	Two active SAs cannot have the local and remote IP address(es) both the same.
	Two active SAs can have the same local or remote IP address, but not both. You
	can configure multiple SAs between the same local and remote IP addresses, as
	long as only one is active at any time.
Remote Address	For a single IP address, enter a (static) IP address on the network behind the
	remote IPSec router.
	For a specific range of IP addresses, enter the beginning (static) IP address, in a
	range of computers on the network behind the remote IPSec router.
	To specify IP addresses on a network by their subnet mask, enter a (static) IP
	address on the network behind the remote IPSec router.

162 Chapter 13 IPSec VPN