VPN traffic in only 1 direction

PeterC
PeterC Posts: 2
in Security
I have 2 sites connected via site to site VPN but I am only able to send traffic in 1 direction between sites.  It connects so I know it's not a VPN issue.  The site that cannot send has a new router so I don't think it's a stray rule somewhere but I am at a loss.  Any ideas what I should be looking for? 

All Replies

  • PeterUK
    PeterUK Posts: 3,506  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    Do both ends have different LAN subnets?

    If you ping from one end do your see any blocked traffic in the logs? 
  • PeterC
    PeterC Posts: 2
    While doing further troubleshooting I discovered that something was wrong with the Firewall on the remote system.  I managed to screw it up while testing to the point of HW reset.  I had an older config that works so I am good. 
  • Zyxel_Charlie
    Zyxel_Charlie Posts: 1,034  Zyxel Employee
    50 Answers 500 Comments Friend Collector Fourth Anniversary
    edited July 2021

    @PeterC
    Everything is fine now?
    As PeterUK mentioned, you may make sure both ends are located in different subnet.
    You can do the packet capture of wan and lan on both device or on the log page to see where block the traffic


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