By keneshhagard
I am using StrongSwan to setup a site-to-site VPN between two DigitalOcean VPCs. For testing purposes I have UFW disabled and when I add a DO firewall with TCP/UDP/ICMP open to all addresses inbound / outbound - ICMP fails to get through the tunnel. Removing the DO firewall ICMP gets through.
UFW works fine in both directions. Any ideas why the DO firewall doesn’t work?
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Hi,
Firstly, I must admit that I used to use DO firewall just during initial droplet configuration, to protect it until its own firewall is installed and configured. Though I do not use DO firewall on a daily basis as it is not flexible and difficult for troubleshooting (the logs are not available), I may say that the below settings made my DO firewall transparent in my implementations when I was using it.
Inbound rules.
| Type | Protocol | Port Range | Sources |
|---|---|---|---|
| ICMP | ICMP | All IPv4, All IPv6 | |
| All TCP | TCP | All ports | All IPv4, All IPv6 |
| SSH | TCP | 22 | All IPv4, All IPv6 |
| All UDP | UDP | All ports | All IPv4, All IPv6 |
Outbound rules.
| Type | Protocol | Port Range | Destinations |
|---|---|---|---|
| ICMP | ICMP | All IPv4, All IPv6 | |
| All TCP | TCP | All ports | All IPv4, All IPv6 |
| All UDP | UDP | All ports | All IPv4, All IPv6 |
Can you share some more info about you configuration ?
- Are your VPCs in the same region ?
- Do you have all your droplets added to to this firewall ?
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