If the internet doesn't work, use the proxy PAC file - proxy

we're beating our heads a bit with this problem of ours. We have a company headquarters with our own network and an external cloud with another network. We want to create a script that when our on-site network does not work, it must automatically use the proxy we created with Squid, which is obviously on the Cloud with another network. Our virtual machine on the cloud with Squid can be reached internally via Firewall. We need an automatic system that uses the proxy when the internet fails in our office, can you help me? I was studying the Pac files, but I understand little of them. If I could also apply it via policy it would be perfect, but I just need to solve at least the first point.
Thanks

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I don't have fixed IP address, how can I let others access my database?

I run Memgraph Platform on my laptop inside Docker container. When I'm at the office my colleague can access it, but when I work from home he can not get to the database. I don't have fixed IP address, and my ISP doesn't allow me to do port forwarding and dynamic DNS also doesn't work for me. What can I do to make my database accessible to others?
Try to follow the advice given by #Martheen. I have experience with running Tailscale for this purpose and it works.
I don't know why you can't deploy it to some server (if there are regulation issues or company policies in question) but if it is not any of those maybe you could use Memgraph Cloud and host your data. That way you would be sure that everyone with the right credentials could access your data. But it all depends on your setup and usage scenario. Since you are using Docker I presume that you have all of your environment configured right the way that you want on your laptop.

socks5 proxy: enable for only certain IPs

I have a webpage and a little game server running on my own machine that is located at my work office.
The problem is that some people can't reach the webpage and game server, because of some network issues. The reasons are not the key, just take it (for almost all my community all things works fine, there just some troubles for a specific group).
So,
I have set up the test Droplet on Digital Ocean, with socks5 proxy installed.
https://github.com/hensly/socks5
And it all worked :) Clients that are restricted to connect directly are just using my proxy server to connect to the webpage or game server.
.
So my questions come up:
How can I limit my proxy to work only with certain IPs? Actually, I need only one IP - the IP of my server-pc, and that's it (the reserved (white) IP and domain name attached to it). Is there a way of such limitation on the proxy side? I just don't want them to use proxy for everything (mostly because there is not an unlimited Bandwidth and it could cost some extra).
Thanks <3
p.s. if you know other, more convenient ways to solve my problem, I'd appreciate it if you share your thoughts.

How to specify DNS server for a VPN connection by PowerShell without first being connected to the VPN?

I am a newbie at PowerShell but wouldn't ask without spending a ton of time looking online first.
Is there any possible way of specifying ipv4 DNS Server (and alternate) without being connected to the VPN first?
I am installing VPN profile for a business which I can do manually but there is close to 180 users which I am trying to implement through a PowerShell script in Endpoint Configuration Manager. I am obviously trying to work smarter, not harder.
I already have the Add-VpnConnection script down which works great but I still have to manually change the Primary and Alternate DNS for ipv4.
In addition, I would like to turn off ipv6 for this VPN but that coincides with this originally problem I am running across.
Any help or ideas down the right path would be much appreciated!

HIding behind a proxy did not seem to work?

I often visit various sites and like to do so anonymously from behind a proxy. However, it seems as if some websites are still able to detect my real IP address. I know this because they use the IP address to attempt to geolocate me for services.
How did they actually get my real IP Address if I am using a proxy?
How can I truly hide myself?
Most proxies you'll find online are so-called 'transparant proxies'. This means they identify themselves as proxy and even give your real IP-address to the site.
These proxies are commonly used to load pages on the proxy-server instead of your PC.
IP proxies won't protect you at all, to be honest.
What you need are VPN's (Virtual Private Networks) a.k.a. Network Tunnel.
VPN's allow you to do everything online via an external PC inside that network. You'll get that PC's IP and all loading etc happens on that PC.
Not all VPN's are undetected. If you always want to browse the web anonymously, you'll need to find some HQ VPN's (barely for free) and you'll need to change VPN frequently.
Try searching on HideMyAss, SecurityKISS, ... or maybe even the TOR-network

Steps to setup proxy server

I want to setup proxy server on our office. I have two proxy server's available i.e. (SQUID for Linux and WinProxy for Windows). I have following requirement.
All the rule's which I define in proxy server like block some specific sites etc. should likely to work.
The "Evolution Mail Client" for linux and "Outlook Express" for windows also should work.
So, can you tell me the guidelines how to achieve both the task especially no.-2 .
Thanks in advance.
Squid is a very good option for a caching proxy. It has a configuration file to block some specific sites, IPs, domains... and to tell him which files has to cache. Making a smart proxy is not easy. But you can find great configurations and tutorials in Google or in his wiki.
There are two ways for setting up a proxy:
Direct proxy: you have to manually configure every computer to use your proxy server.
This is the easiest option. I recommend you using this.
Please note, computers that don't use the proxy can access all pages (even if they're blocked).
Transparent proxy: this is the most secure, ideal option for most cases (including yours). You have to configurate your network and the proxy server to forward any requests to it. This is a hard option and very difficult to achieve in your case.
About your Evolution and Outlook problem, there can't be any problems related to the proxy, don't worry about that.

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