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Site to Site VPN Failed

I keep having problems with site to site VPN on XG.  The errors in the log show parsing IKE message from 123.123.123.123[500] failed

 

I can get it working again if I go in both the branch XG and the Head XG and change the key but it will only work for a day or 2



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  • In the end invalid SPI messages turned out to be raised by different seetings for the remote site on both sides. One side defined only a host and the other side defined the complete network. Now the tunnel is up but traffic won't pass :(

    Regards, Jelle

    Sophos XG210-HA (SFOS 18.0.4) on SG210 appliances with Sandstorm and 1x AP55
    Sophos Central with Intercept X Advanced, Device Encryption, Phish Threat, Mobile Control Advanced

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