1. Fixing, hardening and deploying TLS security with any kind of server
having TLS/SSL support.
2. Installations of hardened OpenVPN servers with various authentication schemes and bandwidth control features.
3. Firewall and OpenSSH hardening.
4. Email encryption support.
5. General system admin work and support.
In special situations we can provide gratis support services, but donations are always welcome and some more extensive work will require proper renumeration.