RV340 RV340-K9 V03
Current firmware: 10.0.03.21
One of my site-to-site VPN connections is broken after the firmware upgrade, I believe.
Left: RV340
Right: Strongswan 5.9.1 (Ubuntu server, NAT-T)
I have this server connected to several other locations with no issues, but RV340 refuses to connect.
<info>charon: 14[IKE] IKE_SA s2s_xx_xxx[93670] state change: CONNECTING => DESTROYING
<info>charon: 14[IKE] received NO_PROPOSAL_CHOSEN error notify
<info>charon: 14[ENC] parsed INFORMATIONAL_V1 request 2950876373 [ N(NO_PROP) ]
<info>charon: 14[NET] received packet: from xx.120.9.xxx[500] to xx.187.93.xx[500] (56 bytes)
<info>charon: 07[NET] sending packet: from xx.187.93.xx[500] to xx120.9.xxx[500] (200 bytes)
It was working before the firmware upgrade.
EDIT:
This Stongswan server is the only endpoint behind the router (NAT-T), all other connections (on RV340) endpoints, which have not been affected by the firmware upgrade, are routers, besides some connections to AWS VPC (EC2 VPN gateways with Strongswan servers) which have Elastic static public IPs (not behind NAT-T, I think).
NAT-T has been affected by this firmware upgrade?
UPDATE:
My NAT-T suspicions were correct, but this is not a firmware upgrade to blame but rather myself.
I have found a port forwarding NAT-T was enabled on this router, probably recently.
It was embarrassing ...
