The Wrong Question Is Costing You
When a security team goes looking for a "Linux PAM solution," they are usually asking the wrong question.
The right question is not which PAM tool should we deploy? The right question is: does our team actually know what every user can do on every Linux server right now?
If the answer is no — and across most enterprise environments it is — then no amount of session recording, credential vaulting, or just-in-time access provisioning will close that gap. You are securing the known door while leaving the basement unlocked.
This page compares five tools that organisations commonly evaluate when they set out to secure Linux access: CyberArk, BeyondTrust, FreeIPA, Teleport, and LinuxGuard. They are not competing for the same job. Understanding what each one actually does is the fastest way to stop buying the wrong solution — or to understand why the solution you already have is not enough.
Why Linux Access Management Is a Different Problem
Enterprise security stacks were built for Windows Active Directory and cloud IAM. Linux identity lives somewhere else entirely: in /etc/passwd, /etc/sudoers, PAM module stacks, authorized_keys files, and group memberships accumulated across years of role changes. Generic tools cannot see this plane at all.
The consequences are predictable. According to CrowdStrike's 2025 Global Threat Report, 79% of Linux attacks use no malware — attackers simply log in using legitimate credentials or misconfigured access paths. The IBM Cost of Data Breach 2025 report places the mean time to identify and contain a credential-based breach at 246 days. The average cost: $4.67 million.
The common thread across those breaches is not a missing patch or a zero-day. It is a sudo rule that should have been removed six months ago, a service account with membership in a privileged group, or an SSH key that points to an account that no longer exists. None of those show up in session recordings. None of them are found by vulnerability scanners. None of them are inside a PAM vault.
That is the gap this comparison is designed to help you evaluate.
What to Evaluate: Five Criteria That Actually Matter
Before comparing tools, agree on what you are trying to measure. Most PAM evaluation checklists are built for Windows environments and miss the Linux-specific controls that determine your real exposure.
The five criteria below reflect what Linux-native identity governance actually requires.
1. Linux-Native Coverage
Does the tool truly understand Linux identity in the real world — including sudoers files, PAM module stacks, NSS configurations, setuid binaries, authorized_keys entries, and local group memberships — or is it just managing a curated set of “known” privileged accounts and leaving everything else in the dark?
2. Sudo Governance
Can the tool inventory, analyse, and risk-score every sudo rule across your fleet — including NOPASSWD entries, wildcard permissions, and GTFOBins-exploitable commands — without requiring manual server-by-server review? Sudo is the primary privilege escalation mechanism on Linux. Most tools don't touch it.
3. SSH Key Lifecycle
SSH keys are permanent until manually revoked, frequently shared across users and systems, and almost never audited. Can the tool map every authorized_keys entry across your estate, identify orphaned and shared keys, detect unauthorised additions in real time, and produce an audit trail for regulators?
4. Non-Human Identity (NHI) Support
Non-human identities — service accounts, API keys, pipeline credentials, CI/CD tokens — typically outnumber human users 80:1 on a mature Linux estate. Can the tool govern service account group memberships, detect privilege creep in automated identities, and produce compliance evidence for NHI access paths?
5. Compliance Evidence Quality
When your NIS2 auditor, DORA supervisor, or PCI QSA asks for evidence of access controls on your Linux estate, what can the tool produce? Session logs are not access control evidence. Evidence means: a structured inventory of who had what privilege, on which servers, over what time period — mapped to the specific framework control being tested.
The Comparison
CyberArk
What it is: The market leader in enterprise privileged access management. CyberArk's core capability is credential vaulting and privileged session management — it stores and rotates privileged credentials, brokers access to target systems, records privileged sessions, and increasingly operates as a unified identity security platform spanning cloud, on-prem, and OT/ICS environments.
What it does well on Linux: CyberArk has substantive Unix/Linux capabilities. Its Privileged Access Manager automatically discovers accounts and credentials across on-premises and cloud infrastructure, onboards them to a tamper-proof digital vault, and enforces automated rotation. Session isolation and recording is available for brokered Linux connections, and it supports just-in-time, zero-standing-privilege access for cloud-native workloads. CyberArk also now offers a dedicated SSH Manager for Machines product, designed specifically to secure SSH-based machine identities — a meaningful step toward the non-human identity problem. For session-level audit trails across mixed estates, CyberArk is a genuine enterprise-grade platform.
What it does not do: CyberArk manages the accounts it has onboarded. It does not map the sudoers topology across your estate, inventory local accounts outside its managed set, analyse privilege escalation paths through GTFOBins chains, or produce a comprehensive picture of who can do what across the Linux identity plane — as opposed to who did what inside a brokered session. The privilege topology that exists outside vaulted accounts — and on most estates this is the majority of the attack surface — is not CyberArk's scope. SSH Manager for Machines governs the machine identities you enrol; it does not discover and audit the SSH key sprawl that already exists across your estate.
Deployment reality: CyberArk is a large platform with significant deployment and licensing complexity. Implementations typically take months and require dedicated professional services. It is built for organisations that have the resource to operate it at scale.
Best suited for: Large enterprises with complex, multi-platform environments that need credential vaulting, session brokering, and unified privileged access governance across Windows, Linux, and cloud — and have the budget and resource to deploy and maintain the platform.
BeyondTrust
What it is: BeyondTrust's Endpoint Privilege Management (EPM) for Linux replaces sudo with a centrally managed privilege elevation layer. Rather than vaulting credentials, it intercepts privilege elevation requests at the endpoint and enforces policy — allowing or denying commands based on rules, user context, and risk profile.
What it does well on Linux: BeyondTrust takes sudo governance seriously. EPM for Linux can replace sudo directly, centralise policy management across your fleet, and produce granular command-level audit logs. For organisations that need fine-grained control over what privileged commands users can run — and want that control enforced at the OS level — BeyondTrust EPM is a credible solution.
What it does not do: BeyondTrust manages the access it controls. It does not discover and inventory existing sudo configurations before you deploy, produce a historical privilege map of your estate, audit SSH key sprawl, govern service account memberships, or generate compliance evidence for the Linux identity posture that existed before the tool was installed. It is a control tool, not a visibility tool. You must already know what you have before it can protect it.
Deployment reality: EPM for Linux requires agent deployment across your fleet. Agent-based deployments carry change management overhead, particularly in regulated environments where production changes require CAB approval. Better suited for endpoints and developer workstations than for large heterogeneous server estates.
Best suited for: Organisations that need fine-grained sudo policy enforcement and command-level audit trails, particularly on endpoints and developer workstations running Linux.
FreeIPA
What it is: FreeIPA (also available as Red Hat Identity Management / IdM) is an open-source identity management solution for Linux/Unix environments. It integrates LDAP directory services, Kerberos authentication, DNS, and host-based access control into a single platform, providing centralised identity management for Linux fleets.
What it does well on Linux: FreeIPA is genuinely Linux-native. It manages users, groups, host-based access control policies, and sudo rules centrally — and for organisations building out their Linux identity infrastructure from scratch, it provides a solid foundation. It is free (the software itself), well-documented, and integrates naturally with Red Hat/CentOS environments.
What it does not do: FreeIPA manages what is enrolled in its directory. It does not discover or govern identity on systems that predate the deployment, audit the gap between policy and reality across a heterogeneous estate, produce compliance evidence mapped to NIS2 or DORA controls, or assess risk posture. Running FreeIPA does not tell you whether your Linux estate is compliant — it only manages the portion you have explicitly enrolled and maintained. For organisations that have been running Linux estates for years, the drift between what FreeIPA thinks the estate looks like and what it actually looks like is often the real problem.
Deployment reality: FreeIPA is a production service in its own right, requiring high availability configuration, regular maintenance, and genuine expertise to operate correctly. The operational cost is real even if the licence fee is not.
Best suited for: Teams building or standardising their Linux identity infrastructure who want open-source, Linux-native centralised identity management. Not suitable as a standalone compliance or audit tool.
Teleport
What it is: Teleport is a modern infrastructure access platform built around short-lived certificates and just-in-time access. Rather than managing standing credentials, Teleport issues cryptographic certificates scoped to specific tasks and contexts, which expire automatically. It supports SSH, Kubernetes, databases, and web applications behind a unified access plane.
What it does well on Linux: Teleport's approach to Linux SSH access is genuinely progressive. By replacing long-lived SSH keys with short-lived certificates, it eliminates the SSH key sprawl problem for sessions that go through Teleport. Its audit log provides a complete record of who accessed what server, when, and what commands were run. For cloud-native environments with a developer access use case, Teleport is elegant.
What it does not do: Teleport governs access that flows through its proxy. It does not inventory the Linux identity topology that exists outside its control plane — the local accounts, sudo rules, service account memberships, and authorized_keys entries that were there before Teleport was deployed, or that exist on systems not yet enrolled. It does not produce compliance evidence for NIS2 Article 21 or DORA ICT risk management controls that require evidence of your overall access control posture — not just the sessions recorded through a proxy.
Deployment reality: Teleport is primarily designed for developer-to-infrastructure access patterns in cloud-native environments. It is an excellent tool for its intended use case. Retrofitting it across a large, heterogeneous Linux estate — particularly one with legacy systems, embedded Linux, or OT-adjacent infrastructure — is complex and often impractical.
Best suited for: Cloud-native engineering teams that want zero-standing-privileges access to infrastructure, with a strong developer experience and cryptographic audit trails.
LinuxGuard
What it is: LinuxGuard is a Linux-native identity visibility and audit platform. Where other tools manage or control privileged access, LinuxGuard maps the complete privilege topology of your Linux estate — every user, group, sudo rule, SSH key, PAM configuration, and service account — and shows you the paths an attacker would exploit, whether or not those paths exist inside any managed access control system.
What it does well on Linux: LinuxGuard was built exclusively to be the control plane for Linux Identity. Its audit engagement deploys lightweight, read-only collectors that gather identity artefacts across your entire estate, no authentication flow changes, no operational impact. The output is a complete privilege map: who can escalate to root via which sudo rules, which service accounts have overprivileged group memberships, where SSH keys are shared across systems, which authorized_keys entries point to accounts that no longer exist.
The compliance evidence package maps findings directly to NIS2 Article 21, DORA ICT risk management controls, CIS Benchmark, SOC 2 CC6, PCI DSS, NIST 800-53, ISO 27001, SOX, and HIPAA — in a format designed for auditors, not security engineers.
What it does not do: LinuxGuard is not a credential vault. It does not broker sessions, rotate passwords, or replace your authentication infrastructure. It is an audit, visibility and remediation platform, not an access control platform. If you need to vault privileged credentials or record sessions, you will need a separate tool for that.
Best suited for: Security teams, CISOs, and compliance officers who need to know the actual identity and privilege posture of their Linux estate — either as a standalone audit engagement, as a pre-deployment baseline before introducing PAM tooling, or as ongoing continuous monitoring between annual audits.
Comparison at a Glance
| Capability | CyberArk | BeyondTrust | FreeIPA | Teleport | LinuxGuard |
|---|---|---|---|---|---|
| Linux-native | 🟡 Partial | 🟡 Partial | 🟢 Yes | 🟡 Partial | 🟢 Yes |
| Sudo risk | 🔴 No | 🔴 No | 🔴 No | 🔴 No | 🟢 Yes |
| SSH key audit | 🟡 Partial | 🔴 No | 🔴 No | 🟡 Partial | 🟢 Yes |
| Stale accounts | 🔴 No | 🔴 No | 🔴 No | 🔴 No | 🟢 Yes |
| Privesc paths | 🔴 No | 🔴 No | 🔴 No | 🔴 No | 🟢 Yes |
| Credential vaulting | 🟢 Yes | 🔴 No | 🔴 No | 🟡 Partial | 🔴 No |
| Session recording | 🟢 Yes | 🔴 No | 🔴 No | 🟡 Partial | 🔴 No |
| JIT access | 🟢 Yes | 🔴 No | 🔴 No | 🟡 Partial | 🔴 No |
| Audit evidence | 🔴 No | 🔴 No | 🔴 No | 🔴 No | 🟢 Yes |
How These Tools Work Together
These tools are not always direct alternatives. For many organisations, the answer is a combination — and understanding the sequencing matters.
The most common mistake is deploying CyberArk or BeyondTrust without first mapping what you have. You end up with a vaulted subset of known privileged accounts and session recordings for managed access — while the sudoers files, orphaned accounts, shared SSH keys, and service account privilege creep that existed before the deployment continue to represent your actual exposure. The tool creates an audit artefact. It does not create security.
The right sequencing:
- Map first. Use LinuxGuard to establish what your Linux identity posture actually looks like — before deploying any access control tooling. This gives you a remediation baseline, a compliance evidence package for immediate regulatory needs, and a prioritised picture of where control tooling will have the most impact.
- Remediate the worst findings. Orphaned accounts, NOPASSWD rules, shared SSH keys, and overprivileged service accounts can be cleaned up directly — they do not require a PAM platform, they require someone to action them.
- Deploy access controls where they add value. CyberArk or BeyondTrust for session brokering and credential vaulting on the highest-risk systems. Teleport for developer-to-infrastructure access in cloud-native environments. FreeIPA for building out centralised Linux identity infrastructure on a clean baseline.
- Monitor continuously. Use LinuxGuard's continuous drift detection to surface new privilege drift, unauthorised SSH key additions, and emerging escalation paths between annual audits — so the next audit starts from a clean baseline rather than uncovering twelve months of accumulated exposure.
The Compliance Evidence Gap
This is the dimension most often missing from PAM evaluations — and the one that matters most to CISOs, audit committees, and regulators in 2026.
Under NIS2 Article 21, covered entities must implement and be able to demonstrate access control policies as part of their cybersecurity risk management measures. Under DORA's ICT risk management framework, financial entities must document and evidence ICT access controls as part of their operational resilience posture. Under SOC 2 CC6, auditors require evidence of logical access controls including least-privilege implementation.
Session recordings show what happened in recorded sessions. Audit logs show commands that ran through managed access paths. Neither answers the question an auditor is actually asking: "Show me your access control posture. Show me who had what access, on which systems, and whether it was appropriately governed."
That question requires an inventory of your Linux identity estate — not a log of sessions that happened to flow through a proxy. LinuxGuard produces that inventory, maps it to the specific control language of each framework, and generates a structured evidence package that goes directly into your audit file. No spreadsheet assembly. No screenshot gathering. No six-week manual exercise before every audit.
When You Need LinuxGuard
You should be talking to LinuxGuard if:
- You are preparing for an NIS2, DORA, SOC 2, PCI DSS, or ISO 27001 audit and need Linux access control evidence in a format regulators accept
- You have never formally audited your Linux identity posture and cannot say with confidence how many orphaned accounts, NOPASSWD sudo rules, or shared SSH keys exist across your estate
- You are evaluating CyberArk, BeyondTrust, or Teleport and want to understand your actual baseline before you deploy
- You have already deployed a PAM platform and a recent audit revealed findings in the Linux identity layer that the platform did not surface
- You are a CISO who can confirm your Windows estate is governed but cannot say the same about every Linux server
- You need to demonstrate continuous compliance to an audit committee or board between annual audits
LinuxGuard is not the right fit if:
- You need credential vaulting or session recording for known privileged accounts — CyberArk or BeyondTrust is the right tool for that
- You need just-in-time, zero-standing-privilege access for developers in a cloud-native environment — Teleport is purpose-built for that use case
- You are building out Linux identity infrastructure from a greenfield state — FreeIPA or Red Hat IdM provides a strong foundation
Start With Visibility
The tools that attract the biggest budgets in privileged access management are control tools. They are good at what they do. But you cannot control what you cannot see.
79% of Linux attacks use no malware. They exploit credentials and access paths that were already there, already misconfigured, already forgotten. No session recording surfaces a NOPASSWD sudo rule sitting in a sudoers file since 2021. No credential vault catches a service account with membership in a privileged group that nobody remembered to review.
The first question is not which tool controls your Linux access. The first question is: do you know what your Linux identity posture actually looks like?
If you cannot answer that with confidence, that is where to start.
Get the Full Picture in 28 Days
The LinuxGuard Linux Identity & Security Audit maps every user, group, sudo rule, SSH key, PAM configuration, and service account across your Linux estate in 28 days. Fixed scope. Fully remote. Board-ready compliance evidence included.
Schedule a 30-minute scoping call →
No commitment required for the scoping call. Your total time investment across the full 28-day engagement is approximately 5 hours.
Peter Cummings is the founder of LinuxGuard and has 20+ years of IAM and security architecture experience at Mastercard, EY, UBS, Lonza, and UK Government agencies.