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Can someone help in why this OpenVPN config doesn't work with merlin?

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ComputerSteve

Senior Member
I am using VPN.asia or trying to. The config they provide always doesn't work and instead produces the error check configuration: Is there something wrong with this config,

client
dev tun
remote us-nyc.321inter.net 53 udp
auth-user-pass
auth-nocache
nobind
auth SHA256
cipher AES-256-GCM
tls-client
tls-cipher TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384
remote-cert-eku "TLS Web Server Authentication"
persist-key
persist-tun
compress lz4-v2

<tls-crypt>
#
# 2048 bit OpenVPN static key
#
-----BEGIN OpenVPN Static key V1-----
5a406c73bc41f6765ee9f7e082155b66
c7cff844c57e04528166f3b5b3c20330
36ab9a3ef4b8734b938e1e2650be9656
8ec1b72cf32bbe67cc3cf6b87be007b4
10f49fae4266bdbb23925edc725995bc
eaebd017b072738dac55c3309c735a43
7b05c64f4ffcb214ecb4b5ed470f768c
e667f3f678c5da89be34917be1324fde
d515c0ca61762b8a60846ae8939452ec
c9b0dd4bc28df79e8dd9ac975f9098c3
7140c326deee3ed61ce5402cc2ae0293
3a56f68ac2b1148ba661af4970f2c654
791e7cbbf13da7b5819355bd6f43e1b9
93cafbf035d4a187bc9ee3175e706563
3f5ae8f6356b3d33f18dd831235a03d7
a6eea38085fed6927e9a604b82c3ccc1
-----END OpenVPN Static key V1-----
</tls-crypt>

<ca>
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
</ca>
 
Post the OpenVPN messages shown in the router's System Log. It should tell you what the problem is.
 
so this is what it says:
Apr 11 13:38:24 custom_script: Running /jffs/scripts/service-event-end (args: start vpnclient4)
Apr 11 13:38:24 ovpn-client4[13118]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
Apr 11 13:38:24 ovpn-client4[13118]: OpenSSL: error:0908F066:lib(9):func(143):reason(102)
Apr 11 13:38:24 ovpn-client4[13118]: Cannot load CA certificate file ca.crt (no entries were read)
Apr 11 13:38:24 ovpn-client4[13118]: Exiting due to fatal error
 
However there is a CA thing listed in edit keys and certificates it shows this exactly:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
 
Make sure your VPN client is turned off.

Then SSH into the router and check the /jffs and /tmp filesystems:
Code:
df -h /jffs /tmp

Then remove any corrupted entries for that VPN client:
Code:
rm -fr /tmp/etc/openvpn/client4

Try starting the VPN client now.

If that doesn't work my guess would be that the router doesn't support that tls-cipher. Check it with the following command:
Code:
openvpn --show-tls
 
Last edited:

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