Network Auditing

Network Performance Audit

 

Benefits of our Network Performance Audit:

  • Helps in identifying the bottlenecks in the network
  • Helps improve network utilization
  • Helps in capacity planning
  • Helps to manage network better
  • Helps in network performance optimization
  • Increases network productivity
  • Helps achieve organization to achieve its near goals/targets based on their network

 

Our Methodology

Syynergis uses a systematic approach for its network audits based on SANS, NIST and PCI DSS Standards.

 

  • Understand the network setup
    1. We start off the network performance assessment task, by first understanding the network setup. This can be achieved by reviewing the network diagram. Network diagram gives an overview of:
      • Network components and devices
      • Data storage and route information
      • Type of data flowing in network (database, SMTP/POP3, SNMP, LDAP, voice, etc.)
      • Big picture of network congestion points
      • Network component redundancy information

 

  • Monitor the Network Traffic

Once the network setup and the information flowing in it is clearly understood, then the Syynergis consultant will start monitoring individual traffic on individual nodes for the volume of data transferred during typical times in the day and/or night. Monitoring Softwares will be installed during this phase, for this matter the client will be asked to install at least one PC per site. The number of PC terminals needed will depend on the size of the network. This exercise will give a clear picture of the company’s total bandwidth use.

 

  • Check configurations

Then we will review the configuration of all network devices (e.g., routers, firewalls, printer settings etc) and the configuration of network applications (e.g., determining whether the server application is excessively querying clients). Reviewing of network applications typically includes:

      • Importance of application to business
      • Best practices
      • Configuration issues

 

  • Protocol Analysis

Protocol analysis is a prerequisite for the next step of Network performance analysis called ‘Data error rate’. In this, we go into the nitty-gritty of the protocols and have a closer look at the actual packets flowing on the network along with their volume and frequency. This helps in understanding, if there are some other protocols/packets flowing on the network un-intentionally or un-attended, which might be utilizing the network’s current bandwidth.

 

  • Data Error rate

Data collected from the previous step, will be an input to this exercise. One of the simple reasons why data errors occur is due to any losses of packets flowing within the network.

 

  • System Reviews

Once the network protocol and data error rates are analyzed, and then individual systems those contribute to the network usage issues are examined closely. These systems could be either a server (UNIX, Windows, Linux based), desktop machines (acting as clients to some applications), or network devices (switches, routers). Typically their overall configuration, system parameters, CPU utilization, network application usage etc will be reviewed in this stage.

 

  • Post Analysis

Post analysis step includes collection and co-relation of data collected during the entire exercise. Co-relation typically includes:

    • Current network setup and capacity
    • Current business requirements
    • Near future goals of the organization
    • Configuration issues (overall and individual) if any