---
type: source
title: "URZ: SSH-Gateway"
tags: [ssh, vpn, network-infrastructure, remote-access]
related: [ssh-gateway, ssh-tunneling-uni-greifswald]
created: 2026-06-30
updated: 2026-06-30
sources: ["output/rz_uni_greifswald_de_dienste_technische_infrastruktur_vpn_ssh_gateway.md"]
---

# URZ: SSH-Gateway

This source provides technical documentation for the SSH-Gateway service provided by the Universitätsrechenzentrum (URZ) at Universität Greifswald. It describes the gateway as a lightweight alternative to a full VPN for accessing internal university resources via the SSH protocol.

## Key Technical Details
- **Server Address**: `ssh-gateway.uni-greifswald.de`
- **Public Key Fingerprint**: `SHA256:1b0s7qTEHnJVPeSYCokxWEhQmZscUPYGlxMRRum1wHA`
- **Authentication**: Primarily requires Public-Key authentication, managed via the [[ums]].
- **Verification**: Supports `VerifyHostKeyDNS` for automatic host key verification via DNS (requires DNSSec).

## Access Methods
The URZ recommends using SSH tunnels (via the `-J` flag or `ProxyJump` configuration) rather than logging directly into the gateway. Direct login is discouraged because:
1. It fails if the target system requires Public-Key authentication.
2. File transfers are inefficient, requiring two-step copying and being subject to the gateway's local filesystem limits.
