This is a general question. I'm building a VPN for my work network on a Juniper SRX firewall, and I need to troubleshoot it. 

Right now, I have to walk to a cafe or library to test it and then go back into my office to change the configuration. This is very inefficient. In addition, I can't use any of the VPN session monitoring tools on my firewall since I'm never in the office while I am testing VPN. 

My VPN policy is Untrust-to-Trust only. If I set up a Trust-to-Trust policy for it, will that introduce (or take way) variables I need to pay attention to in the troubleshooting process? 

Is there a convenient and secure way to test VPN from an Untrusted network while I am on my work network? (e.g. use a proxy server or a commercial VPN like Private Internet Access)? 

Do you have any recommendations on how to best do this? 

Thank you for reading.