You only need a VPN connection to reach e.g. the ETH servers from outside.

You can download and then install the Cisco AnyConnect Client.

---

ETH Staff

Server: sslvpn.ethz.ch/staff-net

Username: username@staff-net.ethz.ch

Password: Networkpassword

---

ETH Students

Server: sslvpn.ethz.ch/student-net

Username: username@student-net.ethz.ch

Password: Networkpassword