RED15 Stopped Working in Transparent/Split Mode

Hello,

Pretty much out of the blue I can't get my RED15's to work in Transparent/Split mode against 18.0.5 MR-5.

By work I mean accessing resources on the LAN behind the XG firewall.

I can't recall making any changes that will have any influence.

- All working OK with both Standard/unified and Standard/split.

- All working OK with both unified and normal firmware.

- All working OK with tunnel compression both on and off.

- All working OK with RED on LAN zone or separate zone.

- Checked with 3 different RED devices.

To make clear - using Transparent/Split mode, it doesn't work, regardless of other options (firmware/tunnel compression).

The tunnel looks as if it's working on both the RED and the XG side, but pinging whatever on the XG LAN doesn't work.

 

Thanks in advance, Adam.



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[edited by: emmosophos at 10:09 PM (GMT -7) on 20 Apr 2021]
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  • OK, I found the problem.

    If I set a second IP for the firewall (in either Failover or Load Balancing mode), it stops working.

    Even deleting the second IP and restoring the RED configuration to a single IP address won't work.

    As soon as I delete the RED completely and re-adding with a single IP, everything works.

    * EDIT *

    It seems to be a specific case to a larger problem.

    Any change I make after the initial RED configuration seems to cause the same issue.

    For example:

    I configured the RED to a separate zone - working.

    Changed to LAN - not working.

    Restoring to original zone - not working.

    Also vice versa with the same result - only deleting and re-adding makes it work again.

Reply
  • OK, I found the problem.

    If I set a second IP for the firewall (in either Failover or Load Balancing mode), it stops working.

    Even deleting the second IP and restoring the RED configuration to a single IP address won't work.

    As soon as I delete the RED completely and re-adding with a single IP, everything works.

    * EDIT *

    It seems to be a specific case to a larger problem.

    Any change I make after the initial RED configuration seems to cause the same issue.

    For example:

    I configured the RED to a separate zone - working.

    Changed to LAN - not working.

    Restoring to original zone - not working.

    Also vice versa with the same result - only deleting and re-adding makes it work again.

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