NAT Source Node Options Parent topic

Source NAT (SNAT) changes the source address in the IP header of a packet. The primary purpose is to change the private (RFC 1918) address/port into a public address/port for packets leaving the network. The following table explains the requirements that administrators must configure if using SNAT.
Source Node Option Description
Egress Interface Select ANY or any L3 interface from the drop-down box list to act as an interface for egress traffic, which is traffic that originates from inside the network.
Source IP translation Select from the following options:
  • Egress interface IP address—Egress interface IP address is used for translation. When not using the egress interface IP address, users must explicitly specify an interface with one of the next three options.
  • Single IP address—IP address specified will be used for translation.
  • IP address range—IP address range specified will be used for translation.
  • Subnet—Subnet specified will be used for translation.
Advanced options for SNAT Allow users to specify more detailed information or matching conditions, including:
  • Protocol: Any, TCP, or UDP. Any means all protocols.
  • Source IP address range: Specified by Administrator
  • Source Port range: Specified by Administrator
  • Destination IP address range: Specified by Administrator
  • Destination Port range: Specified by Administrator