Difference between revisions of "Log review and management"

Revision as of 11:33, 26 May 2009

1 Overview
2 Log Review Tips
3 Log Standard
4 Logging Tools

Overview

Purpose:

How to detect suspicious activities as soon as possible to reduce the impact of incidence or make prevention if possible.
How to unify the log format and elements as well as the functions?

Role:

Who typically does this?

Security Administrator or independent party who has no access rights/accounts in the reviewed systems. You can't be an user administrator. At the same time, you review your activity everyday. However, if there is a resource limitation, you need another supervisor to authorize your log review.

Frequency:

It depends on the criticality (i.e. payment system, customer information, business secret, etc.) of the system labelled by the organization, logs could be reviewed ranging from minute, every day, weekly, monthly or even 3 months. In fact, log review is a kind of detective control and the preventive control is lacking. Log review will be the Goal Keeper and frequency is critical.

However, user account and authority list should be reviewed at least 3 to 6 months and never take a check ONLY when the audit cycle is coming

Log Review Tips

Critical systems require at least daily log review, however, what types of logs/activities should we pay attention to?

1. Consecutive login failure especially in non-office hour.

2. Login in non-office hour.

3. Authority change, addition and removal. Check them against with authorized application.

4. Any system administrator's activities

5. Any unknown workstation/server are plugged into the network?

6. Logs removal/log overwritten/log size is full

7. Pay more attention to the log reports after week-end and holiday

8. Any account unlocked/password reset by system administrators without authorized forms?

Log Standard

In fact, we are suffering various log format and standard from various systems even we are working in-house or act as a consultant. Why don't we produce a standard/guidelines to developer before they design the user administrative and audit trail functions to fulfill security control.

Functions:-

Search - By date and time, by event type, by criticality, by account/user ID, by department

Sorting - By date and time, by event type, by criticality, by account/user ID, by department

Paging (Optional)

Critical event is marked by "*"

Log archive and export

Log code and description table

Highlighting system and user adminsitrator activities

Mandatory Fields:-

User ID and Name (Sometimes, event may involve the action from administrator)

Activity Date/Timestamp

Activity Code, Type and Description

Terminal IP address and Location

User Account List:-

User Info - Name, Department, Role

Last Accessed Time

Account Creation Date/Time

Current Authority and Role

Account authority and information change history

Show expired and inactive accounts (for example: 90 days)

Logging Tools

Resources from Syslog.org

Event Notification

http://www.syslog.org/wiki/Main/EventNotification

Syslog Clients

http://www.syslog.org/wiki/Main/SyslogClients

Syslogd Replacements

http://www.syslog.org/wiki/Main/SyslogdReplacements

Event Viewers

http://www.syslog.org/wiki/Main/EventViewers

Log Analyzers

http://www.syslog.org/wiki/Main/LogAnalyzers

Event Correlation

http://www.syslog.org/wiki/Main/EventCorrelation

Windows

http://www.syslog.org/wiki/Main/Windows

Misc Log Tools

http://www.syslog.org/wiki/Main/MiscLogTools

Best Practice and Tips from Syslog

Syslog Security Tip

http://www.syslog.org/wiki/Main/SyslogSecurityTip

Central Syslog Tip

http://www.syslog.org/wiki/Main/CentralSyslogTip

Logging Windows To Syslog Server

http://www.syslog.org/wiki/Main/LoggingWindowsToSyslogServer

Logging Troubleshoot

http://www.syslog.org/wiki/Main/TroubleshootingSyslogForwarding

Syslog Best Practices

http://www.syslog.org/wiki/Main/SyslogBestPractices

Logging, Log File Rotation, and Syslog Tutorial

http://www.hccfl.edu/pollock/AUnix2/Logging.htm

Difference between revisions of "Log review and management"

Revision as of 11:33, 26 May 2009

Overview

Log Review Tips

Log Standard

Logging Tools

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