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How to route Internet traffic through the IPSec site-to-site VPN to AWS?

I'm going to build my whole datacenter on private subnet AWS VPC (LDAP, RADIUS, Database, etc.)

I already set up IPSec site-to-site VPN by the following guide.

https://community.sophos.com/kb/en-us/133057

Tunnels are up and working well. I can Ping and SSH normally to the database servers.

Now I want to route all traffic from my local LAN to the VPC, but I cannot reach the Internet.

I tried to config the Remote Subnet of VPN in the firewall as "Any", but it still doesn't work.

Any idea or help is really appreciate !!!



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  • Hey  and 

    The packet capture utility shows ping to 8.8.8.8 violation because of firewall rule.

    So I added 2 firewall rules:

    - LAN_to_VPN: Source: LAN, Local Subnet --> Dest: VPN, Any

    - VPN_to_LAN: Source: VPN, Any --> LAN, Local Subnet

    Still can ping only the IP inside AWS VPC, cannot ping the Internet.

    Now the packet capture utility shows ping to 8.8.8.8 forwarded because of the new 1st rule.

    The result of traceroute is stop at the gateway of the LAN:

    $ traceroute 8.8.8.8

    1  192.168.0.1  (192.168.0.1)  3.455 ms  1.390 ms  1.258 ms

    2  *  *  *

    3  *  *  *

    What firewall rule should I add more? Or the problem may be at the AWS site?

  • Hi  

    If the traffic is getting forwarded and not getting any reply packet please try to capture the packet at the AWS side and check whether the packets are being received at AWS site or not. No further firewall rules are needed. Please verify at the gateway level.

    Regards,

    Keyur
    Community Support Engineer | Sophos Support
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  • The AWS VPC does not allow transit traffic. Cannot push Internet traffic to the VPN Gateway