Hi i have a problem to ativate double stack for vpn ssl
config vpn ssl settings set dual-stack-mode enable end
Response in cli mode
set dual-stack-mode enable
To enable dual-stack-mode, all SSL-VPN policies must be configured with IPv4 and IPv6.
node_check_object fail! for dual-stack-mode enable
I have only one vpn policie. do you have an idea ?
Regards
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where do you pu this argument ?
Hello, when dual-stack is configured on the fortigate and you connect with Forticlient 7.0.7 with "Enable Dual-stack IPv4/IPv6 address". Do you get ONLY an IPv6 address?. Also, once connected. In example, if you have an SSLVPN zone to Internet zone Firewall policy. How does that work? For IPv4 you would need NAT, but for IPv6. You would not need NAT. Can you have one policy for IPv4 (NAT'ing) and different policy for IPv6 not NAT'ing?
Hi @Meni ,
Have you included IPv4 and IPv6 on the SSL VPN policy?
Have a look at the guide here:
https://docs.fortinet.com/document/fortigate/7.0.0/new-features/766455/dual-stack-ipv4-and-ipv6-supp...
Hi @dbu
Thanks for your response
I changed my policy. Before i have a policy for v4 and one for v6. I put all V4 and V6 and the same.
Now the dual stack is ok but when i connect vpn i only have v6 address and ip V4 is not forwarding
Regards
What do you mean ?
Do you have an IPv4 stack configured on your client ?
Check with ipconfig /all .
If yes, try to ping
execute ping www.bing.com
You can use this command and check if you see any traffic:
diagnose sniffer packet any icmp 4
find the problem but not the solution
When i make connection, i don't have ipv4 adresse distributed by fortigtate
Adresse IPv6. . . . . . . . . . . . . .: fdff:ffff::2(préféré)
Adresse d’autoconfiguration IPv4 . . . : 169.254.196.34(tentative)
I made some test. Its very strange
When i made connection to vpn SSL with IPV6 address i can access only on ipv6 devices
When i made connection to vpn SSL with IPV4 address i can access only on ipv4 devices
Really strange
I have not tested this myself, but i think dual stack means that client can use either IPv4 or IPv6 to connect to the destination address.
In your case when you connect with IPv6 you can reach only IPv6 destinations available .
So you choose which stack to use. You will get an IPv6 assigned and not an IPv4.
I have the impression but it's still not very friendly
It will be difficult to choose the V4 or v6 connection depending on the servers to reach
Thansk for your help
I'm still looking
If you are using the web mode, users can access both IPv4 and IPv6 bookmarks in the portal.
The attribute, prefer-ipv6-dns
can be enabled to prefer querying IPv6 DNS first, or disabled to prefer querying IPv4.
where do you pu this argument ?
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