# Failed to establish connection

**URL:** <https://community.ipfire.org/t/failed-to-establish-connection/9747>\
**Category:** IPsec\
**Created:** [17 May 2023 20:03 UTC](https://community.ipfire.org/t/failed-to-establish-connection/9747 "2023-05-17T20:03:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![herby](https://community.ipfire.org/user_avatar/community.ipfire.org/herby/32/12835_2.png) [@herby](https://community.ipfire.org/u/herby)\
**Post date:** [17 May 2023 20:03 UTC](https://community.ipfire.org/t/failed-to-establish-connection/9747/1 "2023-05-17T20:03:19Z")

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Hello,  
I have setup IPsec on Ipfire for a longer time ago and it worked all the time pretty well. But since the last update to core update 174 which I found has also impacted strongswan no ipsec connection to IOS is possible anymore. In the log I see:

```auto
21:51:15	charon: 08[ENC] generating IKE_AUTH response 9 [N(AUTH_FAILED)]
21:51:15	charon: 08[IKE] verification of AUTH payload with EAP MSK failed
21:51:15	charon: 08[ENC] parsed IKE_AUTH request 9 [AUTH]
21:51:15	charon: 08[NET] received packet: from 80.187.122.73[12742] to 79.243.68.30[4500] (112 by tes)
21:51:15	charon: 08[MGR] IKE_SA ipad2hsn[19] successfully checked out
21:51:15	charon: 08[MGR] checkout IKEv2 SA by message with SPIs ff6b995ddddb9642_i 4274555eb1a1e8 24_r 

```

I have also tried to setup a new connectio accordingly to the instructions in the wiki is not possible. There I ge the answert on my IPAD that the certificate can not imported.

Any idea?

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<div class="post-metadata">

**Author:** ![cfusco](https://community.ipfire.org/user_avatar/community.ipfire.org/cfusco/32/9213_2.png) [@cfusco](https://community.ipfire.org/u/cfusco)\
**Post date:** [21 May 2023 17:31 UTC](https://community.ipfire.org/t/failed-to-establish-connection/9747/2 "2023-05-21T17:31:49Z")

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too little information to even guess. I would try to get more logs, also from the iOS side.