Vipin
An OpenVPN network that isolates 200+ CTF players into separate sandboxed networks.
HackArmour, an open-source community project, Aug 2021 – Oct 2022
200+
concurrent CTF players, each team in a separate sandboxed network
mTLS
mutual TLS authentication
One competition, many private networks
Vipin is an OpenVPN-based network system I designed and developed for HackArmour’s CTF infrastructure. It isolated 200+ concurrent players into separate sandboxed networks with mutual TLS authentication, preventing team-to-team data leakage.
Boundaries enforced by the firewall
I configured iptables firewall rules to enforce strict subnet boundaries and block lateral movement between teams.
- Period
- Aug 2021 – Oct 2022
- Project
- HackArmour (open source), Indore
- Built with
- OpenVPN, mutual TLS, iptables
- OpenVPN
- Mutual TLS
- iptables
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