I set up and configured an AWS Client VPN Endpoint that is routing through a VPC with a transit gateway. There are several routes that run through the transit gateway and a VPN attachment as well. 
Initially I did testing in the VPC where the transit gateway lives and began to test access to other VPC's. I noticed that I couldn't access the other subnets. I began troubleshooting and wanted to show the routes on my mac. To do so, you need to run the following command:
<pre><code>netstat -rn
</code></pre>The -r flag means to show routes.
The -n flag means to not resolve IPs to hostnames.
Here is an example of the command output-
<img src="https://cdn.hashnode.com/res/hashnode/image/upload/v1615830588919/1IHBOcAD9.png" alt="image.png" />
I was able to verify the routes were being populated and complete the configuration on AWS side to complete my project.

I set up and configured an AWS Client VPN Endpoint that is routing through a VPC with a transit gateway. There are several routes that run through the transit gateway and a VPN attachment as well. 

Initially I did testing in the VPC where the transit gateway lives and began to test access to other VPC's. I noticed that I couldn't access the other subnets. I began troubleshooting and wanted to show the routes on my mac. To do so, you need to run the following command:


```
netstat -rn
``` 
The -r flag means to show routes.

The -n flag means to not resolve IPs to hostnames.

Here is an example of the command output-


![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1615830588919/1IHBOcAD9.png)

I was able to verify the routes were being populated and complete the configuration on AWS side to complete my project. 

Show Routing Table on macOS

David Galiata IT Consultant turned cybersecurity architect | Passionate about IT, cloud, and security. Always learning. Blogging about my adventures in the industry