08-01-2024, 01:06 AM
But let's talk about what these baselines actually cover, right? They hit on account policies hard, making sure passwords stay strong and accounts lock out after too many bad tries. I like how you can set the minimum password length to something beefy, say 12 characters, and enforce complexity so nobody sneaks in weak ones. You enforce history too, so users can't just cycle back to old passwords. Or maybe you ramp up the lockout threshold to five attempts before it kicks in for 30 minutes. I always adjust that based on your environment, because if you're in a small shop, you don't want accidental lockouts messing up your day.
Now, user rights assignment gets interesting in these baselines. They strip down who can log on locally or shut down the system, limiting it to admins only where it counts. I tell you, I've seen servers compromised because someone left remote desktop access wide open for everyone. You tighten that by removing guests from interactive logons and such. And the baselines push for denying access to this or that service, keeping things locked. Perhaps you enable the "Deny log on as a batch job" for non-essential accounts to prevent sneaky scripts from running wild.
Auditing policies, though, that's where I spend extra time when I set these up for you. The baselines recommend auditing logon events, both success and failure, so you catch weird attempts right away. I always turn on object access auditing too, especially for sensitive files on your shares. You can filter it to just what matters, like changes to registry keys or file deletions. But watch out, because if you audit everything, your logs balloon up fast and eat disk space. Then you pair it with event log sizes bumped to at least 4MB, and set them to overwrite as needed so nothing gets lost in the shuffle.
Device installation rules in the baselines keep hardware from becoming a backdoor. They block unsigned drivers and restrict what USB devices can plug in without approval. I once had a client who ignored that and ended up with malware from a random thumb drive. You enforce the "Prevent installation of devices not described by other policy settings" to control the flow. Or disable autorun entirely to stop those sneaky executables from firing up. It's simple stuff, but it stops a lot of low-hanging fruit attacks before they start.
Then there's the network access side, which the baselines handle with care. They configure secure RPC settings and limit anonymous access to named pipes. I push you to enable the "Network access: Do not allow anonymous enumeration of SAM accounts" because why let outsiders poke around your user list? You also set sharing models to require authentication, no guest access allowed. And for LAN Manager authentication, baselines drop it to NTLMv2 only, ditching the old weak stuff. Maybe throw in some IPsec policies if your traffic needs encryption, but that's more for when you're bridging sites.
Application control enters the picture with baselines suggesting AppLocker or software restriction policies. I use AppLocker on newer servers because it lets you whitelist executables by path or publisher. You define rules for your core apps, like allowing only signed SQL executables or blocking everything else in the system32 folder. But test it in audit mode first, or you'll lock yourself out of tools you need. The baselines include templates for that, so you don't start from scratch. Also, they touch on Windows Defender settings, integrating real-time protection and exclusions only for legit paths.
Service hardening, now that's a sneaky area I always double-check. Baselines set services to run under least privilege accounts, not Local System everywhere. I change print spooler to a dedicated account if you're not printing much, reducing blast radius if it gets hit. You disable unnecessary ones like Telnet or SSDP discovery to shrink your attack surface. And configure startup types to manual or disabled for stuff like Remote Registry unless you absolutely need it. Perhaps audit service changes too, so you know if something flips on unexpectedly.
File system permissions get dialed in through these baselines as well. They recommend ACLs that deny write to system folders for standard users. I walk you through setting inheritance properly on your data volumes, blocking everyone but admins from tampering. You use the cipher tool sometimes to encrypt sensitive dirs, but baselines focus more on access controls. Or integrate with BitLocker for full drive protection if your hardware supports it. It's all about layering, you know, so one slip doesn't expose everything.
Registry security, I can't skip that when we're talking hardening. Baselines lock down keys like SAM and SECURITY hives, setting ownership to SYSTEM and admins only. You deny read access to sensitive areas for regular users, preventing enumeration. I always run regedit checks after applying to verify. And for policies, they enforce restrictions on loading device drivers from untrusted paths. Then there's the software installation side, where baselines block MSI installs from network paths without auth.
But wait, let's get into certificate services if you're running PKI on your server. The baselines tighten revocation checking and limit template permissions. I advise you to use qualified subordination only for trusted roots. You configure auto-enrollment carefully, scoping it to specific OUs. Or disable weak ciphers in Schannel settings, which baselines cover under cryptography. It's crucial for any HTTPS you host internally.
Event forwarding and central logging tie into baselines for better visibility. You set up subscriptions to pull logs from member servers to a collector. I like how it helps correlate attacks across your fleet. Baselines include policies for secure channel communications during forwarding. And don't forget to protect the forwarder with firewalls, allowing only necessary ports.
Now, for physical security aspects, though it's server-side, baselines remind you to enable TPM if available for boot integrity. I push for secure boot in UEFI mode to verify loaders. You check BIOS passwords too, but that's outside GPO mostly. Still, it complements the software hardening.
Internet Explorer or Edge hardening applies if your server runs any web stuff, which baselines lock down zones to high security. You disable ActiveX and scripting where possible. Or configure trusted sites narrowly. It's old-school but still bites if ignored.
Finally, when you apply these, use the LGPO tool for standalone servers or GPO for domains. I test in a lab first, always. Roll out in phases, monitoring for breaks. And keep baselines updated from Microsoft, as they evolve with threats.
You see, hardening isn't a one-and-done; you revisit it quarterly. I do that for my setups, tweaking based on logs. It keeps your server resilient without overcomplicating. Oh, and speaking of keeping things backed up reliably, check out BackupChain Server Backup-it's that top-notch, go-to Windows Server backup tool tailored for Hyper-V hosts, Windows 11 machines, and all your server needs, perfect for SMBs handling private clouds or online storage without any pesky subscriptions locking you in. We appreciate BackupChain sponsoring this chat and helping us spread these tips for free to folks like you.
