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Joined 2 years ago
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Cake day: September 29th, 2023

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  • Are you talking about an ERP system like SAP? If so it’s all about data collection of business operations. Sure you make some no brainer decisions to do things that are practical but it always devolves into “how much did this improve the bottom line?” You start to get data on what business has the highest margins in sales and what products are proving to be a PITA to the bottom line due to customer support eating through labor.

    spreadsheets are good but you start hitting walls when the company expands. Suddenly Purchasing managers are making entries to a file, but simultaneously works in production are changing the same file to reflect what they consumed in production. You then start auditing things and don’t know what the QTY row numbers mean. Is that actual inventory? Is that a mix of inventory on order? does this reflect what the production consumed today? if so when?

    It gets messy without the right tools when the company scales.




  • Use tailscale for host nodes, use tailscale docker container in a compose stack with an app that you sidecar to. That way that app is on your tailnet as if it is its own computer. Use tailscale serve for reverse proxying support of the apps. Then, setup a vps node (I use linodes $5 node) with tailscale and configure that to be your DMZ into your tailnet.

    For DMZ, use Caddy, UFW, and fail2ban. Also take advantage of ACLs in the Tailscale admin console to only have the VPS able to route traffic to specific apps you want to expose. My current project is to work in Authelia into this setup so a user logs into one exposed app and is able to traverse to other exposed apps through header / token authentication.

    Oh also, segment the tailnet using different authentication keys. Each host node should have its own key, all the apps on a host node should have a shared key, and all public facing clients should have a common shared key. That way in case of compromise you can revoke the affected keys without bringing down your network.