Force public IP address

cdobbs
cdobbs Posts: 5
First Comment
edited April 2021 in Security
I can force an internal IP address to the WAN port. The WAN port as 5 public IP address.

I can force an external IP address?

WAN Port 1 
IP address xx.xx.xx.101
IP address xx.xx.xx.102
IP address xx.xx.xx.103 -- This should be my mail server
IP address xx.xx.xx.104
IP address xx.xx.xx.105

From what I can tell my mail server is sending out on xx.xx.xx.105 all the time. And I want it to send on 103

This is on a Zywall 310

All Replies

  • Zyxel_Charlie
    Zyxel_Charlie Posts: 1,034  Zyxel Employee
    First Anniversary Friend Collector First Answer First Comment
    @cdobbs
    Regarding to your request,
    Go to Policy Routing> Source: Mail server, Destination: Any, Next hop: Wan interface, SNAT: The IP address which you want mail server to send mail from.

    Charlie
  • Do I need to make an object for the SNAT ip address?

    If I type the IP address in that field and click save, it reverts back to outgoing-interface.

    Thank you for your assistance.

  • Zyxel_Charlie
    Zyxel_Charlie Posts: 1,034  Zyxel Employee
    First Anniversary Friend Collector First Answer First Comment
    @cdobbs
    Yes, you need to create address object for SNAT IP address, and after created, just select it on SNAT field.
    Charlie

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