IPsec VPN problem

IT_Field_Support

Hi guys,

Just a quick question. We have one VPN gateway used by 2 phases 2 on a USG40W as we have on many other router without any problem.

On this one, for an unknown reason, phase 2 are never connected both at the same time, there are dropping all the time, sometime we can ping through these phase 2 but it is very unstable.

I tried with firewall off and it's still the same.

In the debbug logs, I notice some weird error regarding IPSec, why would IPSec drop packet ?

Thanks for help,

Davy

IPSec Dropping packet. ret=1, step=11    
IPSecSPI: 0x0 (0) SEQ: 0x0 (0) No rule found, Dropping TCP packet. ret=1, step=11
IPSec Dropping packet. ret=1, step=11
IPSec SPI: 0x0 (0) SEQ: 0x0 (0) No rule found, Dropping UDP packet. ret=1, step=11

Zyxel_Emily

@IT_Field_Support,

I've applied your configuration file to USG40W to run the test.

The test result is sent to you in the private message.

Irfan

Hello ,

On zyxel wal usg50 getting this erro

IPSec SPI: 0x0 (0) SEQ: 0x0 (0) No rule found, Dropping UDP packet. ret=1, step=11
any help?

Thanks

Zyxel_Emily

Hi @Irfan,

What is the model of the remote site of VPN tunnel?

Could you share startup-config.conf of USG50 and topology with me in private message?

Irfan

Hi,

Ok thanks , now i upgrade USG50 with latest firmware which you sent me..
Than let you know.
Thanks