Notes from
building it.
New features as they ship, and how Underpass works under the hood, written by the person building it.
/ Product
Subnet routers and exit nodes
Reach a whole office network or VPC through one machine, and send a device's internet traffic out through a server you trust.
Endi1 min read/ Product
Send your logs anywhere
Webhooks for Slack, Discord or your own endpoint, and log streaming to Datadog, Splunk, Elasticsearch or Axiom, for both the audit log and network logs.
Endi1 min read/ Engineering
How your devices find each other
Two laptops behind two routers, neither reachable from the internet. Here's how they end up talking directly, and what happens when they can't.
Endi2 min read/ Independent · bootstrapped · no investors
Built by a person,
not a fund.
I'm Endi, and I build Underpass myself. No investors to answer to, only the people who run their networks on it. Every message that comes in reaches me directly.