this post was submitted on 19 Oct 2023
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Bypass Palo Alto company firewall (alien.top)
submitted 1 year ago by martijn79@alien.top to c/main@selfhosted.forum
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Hello,

My company is using a palo alto firewall which replaces the SSL certificate for every HTTPS site by a company generated one. I used to bypass internet filtering by creating a SSH tunnel with Putty (I am local admin and can run Putty on my laptop) and run it on port 443. Then add a socks proxy in my browser setting and I was done. No more SSL filtering and I could access any website.

But now the firewall is blocking this as well. SSH to port 443 is not working anymore.

I tried this: https://hacktr.org/blog/2020/01/01/ssh-tunneling-over-https/ but it didn't work either.

I also tried this: https://mariobrandt.de/archives/technik/ssh-tunnel-bypassing-transparent-proxy-using-apache-170/

But no go as well.

This has to be possible some way, by proxying apache to SSH using a letsencrypt cert. I tried to add a LE cert but the problem is when apache proxies to SSH it changes to IP ad the firewall blocks that step.

Any idea how to solve this?

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[–] MaxHedrome@alien.top 1 points 1 year ago

OP... as an admin... you are the worst.... but since you're not my user 🤣 you'll probably have better luck tunnelling out on 53 masquerading as DNS with something like iodine.

Btw, If I caught you doing this, because I block outbound DNS, I'd try to get you fired.