Wednesday, September 10, 2008

Duties of a System Administrator
Version 1.1

Daily

Review Audit logs
Tasks
Check application log for warning and error messages for service startup
errors, application or database errors and unauthorized application
installs
Check security log for warning and error messages for invalid logons,
unauthorized user creating, opening or deleting files
Check system log for warning and error messages for hardware and
network failures
Check web/database/application logs for warning and error messages
Check directory services log on domain controllers
Report suspicious activity to IAO
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tools – Windows
Event Viewer

Perform/verify daily backup
Tasks
Run and/or verify that a successful backup of system and data files has
completed
Run and/or verify that a successful backup of Active Directory files has
completed on at least one Domain Controller
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tools
Windows Backup Tool
Veritas Backup Software

Track/monitor system performance and activity
Tasks
Check for memory usage
Check for system paging
Check CPU usage
References
www.Microsoft.com - Monitoring Server performance
Tools – Windows
Microsoft Management Console
Performance Log and Alerts
Task Manager
System Monitor
Microsoft Operations Manager

Check free hard-drive space
Tasks
Check all drives for adequate free space
Take appropriate action as specified by site's Standard Operating
Procedures
References
www.Microsoft.com - Monitoring Server performance
Tools – Windows
Disk Defragmenter
Disk Management
Disk Quotas

Physical checks of system
Tasks
Visually check the equipment for amber lights, alarms, etc.
Take appropriate action as specified by site's Standard Operating
Procedures

Weekly

Archive Audit logs
Tasks
Archive audit logs to a media device with one year retention
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)

Perform/verify weekly backup
Tasks
Run or verify that a successful backup of system and data files has been
completed
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tools
Windows Backup Tool
Veritas Backup Software

Update Anti-Virus signature file
Tasks
Download and install current Anti-Virus signature files
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Downloads
www.cert.mil

Run Anti-Virus scan on all hard-drives
Tasks
Scan all hard-drives using current Anti-Virus signature files
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)

Check Vendor Websites for Patch Information
Tasks
Check vendor websites such as Microsoft, Sun, HP, Oracle, etc for
new vulnerability information including patches and hotfixes
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Downloads
http://iase.disa.mil – DoD Patch Repository
www.cert.mil

Compare system configuration files against a baseline for changes
Tasks
Compare system configuration files against the baseline
Compare application executables against the baseline
Compare database stored procedures against the baseline
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tools – Unix
Tripwire

Run file system integrity diagnostics
Tasks
Run diagnostic tools to detect any system problems
References
www.Microsoft.com - Managing Disks and Volumes
Tools – Windows
Disk Defragmenter
Error-checking tool
Device Manager

Verify Retina Vulnerability Scan Performed (SCCVI)
Tasks
Verify system scanned by IAO or NSO using Retina tool to detect for
vulnerabilities
Downloads
http://iase.disa.mil – DoD IA Enterprise-wide Tools and Software: SCCVI
(DoD PKI cert req'd)

Remediate with Citadel Hercules remediation Tool (SCRI)
Tasks
Verify Hercules remediation tool is used on system to correct
vulnerabilities
Downloads
http://iase.disa.mil – DoD IA Enterprise-wide Tools and Software: SCCVI
(DoD PKI cert req'd)

Check for Password Files
Tasks
Perform file search on system checking for documents containing words such as 'password', 'passwd', 'pwd', etc

Perform Wireless Check
Tasks
Check system for wireless devices and access
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)

Perform server clock/time synchronization
Tasks
Synchronize system clock with master server
References
www.Microsoft.com – Windows Time Service
Tools – Windows
Windows Time Service
Tools – Unix /Windows
NTP

Check for Unnecessary Services
Tasks
Check system services for any unnecessary services running
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)

Monthly

Perform Self-Assessment Security Review
Tasks
Review technology checklist for any changes
Run current security review tool
Import results into Vulnerability Management System (VMS)
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
https://vms.disa.mil
Downloads
http://iase.disa.mil – DoD IA Enterprise-wide Tools and Software:
Gold Disk (.mil only)
http://iase.disa.mil – IA Subject Matter Areas: Security Technical
Implementation Guides – STIGS: Security Readiness Review
Evaluation Scripts
Tools – Windows
DISA FSO Gold Disk and Scripts
eEye Retina Scanner
Citadel Hercules Remediation Tool
Tools – UNIX
DISA FSO Scripts
eEye Retina Scanner
Citadel Hercules Remediation Tool


Perform Hardware/Software Inventory
Tasks
Review hardware and compare to inventory list
Review software and compare to inventory list
Update VMS, where applicable
References
https://vms.disa.mil

Run Password-Cracking Tool (Domain Controller only)
Tasks
Run (or verify IAO team has run) a password-cracking tool to detect
weak passwords
Provide output to IAO team
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tools – Windows
John-the-Ripper
L0phtCrack
Tools - UNIX
Crack
Tools available on DISA FSO Gold Disk (Windows) and
DISA FSO Scripts (UNIX)

Perform/verify monthly backup
Tasks
Run or verify that a successful backup of system and data files has been
completed
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tools
Windows Backup Tool
Veritas Backup Software

Verify User Account Configuration
Tasks
Run DumpSec tool to verify user account configuration
Verify and/or delete dormant accounts with IAO approval
Provide output to IAO team
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tool available on DISA FSO Gold Disk (Windows)


Quarterly

Test backup/restore procedures
Tasks
Restore backup files to a test system to verify procedures and files
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)
Tools
Windows Backup and Recovery Tool
Veritas Backup Software


Annually

Change Service-Account passwords
Tasks
Work with appropriate application administrator to ensure password changes for service accounts such as database accounts, application accounts and other service accounts are implemented
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)

Review appropriate Security Technical Implementation Guides (STIG)
Tasks
Review appropriate STIGs which are updated annually
References
http://iase.disa.mil - Security Technical Implementation Guides (STIGs)

Participate in STIG Technical Interchange Meetings (TIM), when possible
Tasks
Participate in TIMs to exchange information about updated STIGs, etc.
References
http://iase.disa.mil

Review training requirements
Tasks
Review training requirements according to DoD Directive 8570.1
References
http://iase.disa.mil – IA Subject Matter Areas: Policy and Guidance


Initial
Subscribe to STIG News
Reference
http://iase.disa.mil/request-mail.html
Subscribe to JTF-GNO Mailings
Reference
ftp://ftp.cert.mil/pub/misc/subscribe.htm


As Required

Test Patches and Hotfixes
Install Patches and Hotfixes
Schedule Downtime for Reboots
Apply OS upgrades and service packs
Create/maintain user and groups accounts
Set user and group security
Subscribe to STIG News

After system configuration changes:
Create Emergency System Recovery Data
Create new system configuration baseline
Document System Configuration Changes
Review and update SSAA
Update VMS for Asset Changes
Update VMS for IAVMs