Alright, let's cut through the marketing fluff. Every vendor selling Privileged Access Management solutions will tell you that you need their six-figure enterprise suite with AI-powered anomaly detection and a magical unicorn dashboard, even for a modest fleet. For under 100 servers, that's financial insanity masquerading as security.
The "cheapest way to get decent PAM" is to stop thinking of it as a monolithic product and start thinking of it as a set of principles you enforce with the tools you likely already have or can get for free. Decent means: centralized access control, session auditing, and just-in-time elevation. It does not require a glossy portal.
Here's a pragmatic, cynical, and cost-effective approach:
* **Leverage your existing IdP:** If you have Google Workspace, Azure AD, or even a free-tier Okta dev account, that's your central source of truth. The goal is zero standing privileged accounts on servers.
* **SSH Certificates, not keys:** This is the single biggest bang-for-buck. Instead of distributing and rotating SSH keys (a nightmare), use a small CA like HashiCorp Vault (open source) or even `ssh-keygen` to issue short-lived certificates. Your IdP authenticates the user, your CA issues a cert valid for, say, 8 hours. Access evaporates automatically.
```bash
# Example: Signing a user's public key with Vault for a 1-hour cert
vault write ssh/sign/my-role public_key=@$HOME/.ssh/id_rsa.pub valid_principals="ubuntu" -format=json | jq -r .data.signed_key > $HOME/.ssh/id_rsa-cert.pub
```
* **Sudo without passwords (via SSH cert principles):** Configure `sshd` to pass the certificate principle as an environment variable. Then, configure sudo to allow that principle without a password for specific commands. This creates a clear, logged chain: User -> IdP -> SSH Cert -> Sudo.
* **Auditing is non-negotiable:** Send `auth.log`/`secure.log` (for SSH and sudo) and `sudo`'s own logs (via `rsyslog`/`journald`) directly to a centralized, immutable log sink. This could be a Grafana Loki instance, a hardened Elasticsearch cluster, or even a partitioned S3 bucket with Athena. The point is that the server cannot delete its own tracks.
* **Break-glass requires process, not just a tool:** Keep one long-lived SSH key per server, encrypted with a passphrase, stored in a secure vault (like AWS KMS, GCP KMS, or even an offline encrypted USB). Accessing it requires two people and a ticket. Log this access religiously.
The expensive vendors are essentially packaging these patterns with a nice UI and support. For under 100 servers, the operational overhead of rolling this yourself is manageable and teaches you how the system actually works, rather than hiding it behind a black box. You'll spend maybe a week setting it up versus years of licensing fees.
So, before you talk to a salesperson, answer this: can you show me the exact log line that proves who ran `sudo rm -rf /` on prod-db-03 last Tuesday? If not, fix your logging first. That's 80% of "PAM" right there.
—MB
—MB
You're absolutely right about SSH certificates being the cornerstone. The operational hurdle people underestimate is the client-side tooling. Engineers won't reliably use them if it requires three extra manual steps. The integration point with your IdP is key - something like configuring Vault to use OIDC auth and having a simple wrapper script that fetches a fresh certificate before connecting.
One caveat on the "free-tier Okta dev account" for production: the rate limits and user caps can become a bottleneck during an incident when multiple people need immediate access. It's fine to start with, but budget for the first paid tier once you formalize the process.
Data is the new oil – but only if refined
You've nailed the core mindset shift. The point about SSH certificates being a complete replacement for key distribution is critical, but many teams get stuck on the CA management.
Running Vault just for this can feel heavy. A practical middle ground is using something like `step-ca` or even a managed service like Teleport's open-source edition, which bundles the CA, an audit log, and session recording into a single, deployable binary. It directly consumes OIDC from your IdP and handles the certificate issuance automatically. This moves you from "we issue certificates" to "access is automatically granted based on group membership," which is the real win.
The operational cost shifts from licensing to the initial setup time, but for under 100 servers, that's a weekend of work versus a perpetual invoice.
—J
That client-side tooling point is huge. We tried something like this at my last place, and even the wrapper script got ignored because it wasn't baked into their normal flow. They'd just ask for a shared key "this one time."
Have you seen any specific wrapper script examples that are actually seamless? Like, does it hook into their SSH config automatically, or is it a separate command they have to remember?
Still learning.