port forwarding problem

Vict
Vict Posts: 2 image  Freshman Member
Fourth Anniversary
in Security

I have a USG Flex 500 and if i connect a server behind this device i noticed that several ports won't open while i did setup this up in NAT and policy control.

If i connect the server directly on the internet without the Flex 500 in between then i don't have any problems and all the necessary ports are open.

All Replies

  • PeterUK
    PeterUK Posts: 4,152 image  Guru Member
    250 Answers 2500 Comments Friend Collector Eighth Anniversary

    Show us the rule you made.

    do you have PPPoE?

  • Zyxel_Melen
    Zyxel_Melen Posts: 3,990 image  Guru Member
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate

    Hi @Vict

    Please share your NAT rule and security policy settings so we can better help with this issue.

    Additionally, is your public IP the same as the WAN IP address? This question is to check if you are using CGNAT.

    Zyxel Melen


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