IOS VPN Forticlient or IPSEC Problem

[Meni]

Hi

With terminal on ios 17.2.1 i have problem to make vpn connection.

Tunnel is UP but no traffic accross the tunnel. The same tunnel work with Android and windows terminal

do you have an idea ?

Thanks

[Rajneesh]

Hello @Meni  As you mentioned the version of IOS 17.2.1.
May I know if it working with the different IOS versions ?
Did you tried with the other version of Forticlinet.

[Meni]

Hi @Rajneesh 

Thanks for your response 

I don't have older version of ios terminal :)

When i download forticlient from store i don't have older version.

Regards

[akushwaha]

Hello,

As I understand you're unable to access internal network after connecting VPN on FortiClient on Ios devices.

To check if further please provide me the below details:
1.Is this a new setup or it was working fine earlier?
2. Please let me know the firmware version of FortiClient and FortiGate.

3. May I know if you're using Dialup or SSL?
4. Have you configured firewall policy for VPN traffic?
5. Do you see any error message when the issue occurs?

Best Regards,
Abhimanyu

[Meni]

Hi @akushwaha

1.Is this a new setup or it was working fine earlier? ==> New setup
2. Please let me know the firmware version of FortiClient and FortiGate. 

Forticlient : 7.2.3.0123

Fortigate : v7.4.2 build2571

3. May I know if you're using Dialup or SSL? 

I Have tested two configuration Dialup with IPSEC and SSL ==> Same problem
4. Have you configured firewall policy for VPN traffic?

Yes all traffic is permitted from inside to vpn
5. Do you see any error message when the issue occurs?

No error on client login is ok and i see connection on fortigate.

Thanks for you help

[mle2802]

Hi @Meni,
Can you please try to run debug flow from the tunnel IP on FortiGate and try to generate some traffic?

diag debug reset
diag debug flow filter addr X.X.X.X (tunnel IP on FortiClient)
diag debug flow show ip en
diag debug flow show func en
diag debug console time ena
diag debug ena
diag debug flow trace start 999

[Meni]

Hi

I have made good progress with my problem.
Now the flow passes if I connect to the VPN with an ipV4 address and I need to reach an ipV6 address
By putting the double stack the VPN client only obtains an ipv4 if the connection is established in ipv4 or an ipV6 if the connection is established in IPV6

I can't get the 2 stacks to coexist

Regards