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Tag: ike

Update June 2023: IPSec VPN Issues: No traffic through the tunnel caused by dropped ESP packets on the DSL modem

10. August 2022 Author: vla Category: Allgemein

We have recently seen an accumulation of problems with IPSec VPN tunnels. The problem was recognized by Swisscom and fixed with a new firmware. Further information can be found in the release notes (on this page). The firmware version from which the problem was fixed is: 9.52.12 B16++ (June 2023).

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Fortigate S2S-Dialup VPN – Traffic does not run through IPsec tunnel anymore

30. November 2021 Author: sy Category: Fortinet

After Fortigate upgrade v6.4 > v7.0.1 (or later) the S2S-dialup VPNs did not work anymore. Tunnel negotiation is successful and phase 1 and 2 get up. Traffic from spoke is routed into the tunnel, but is seems that the traffic is not received by the hub.

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