Author: CyberSecFaith

CCNP Wireless CUWSS 642-732 Summary Notes 5 : Regulatory Issues

Regulatory Domains: Several countries use the same regulatory rules, forming regulatory domains. They define such things as power of transmission, antenna gain and frequency used. A domain - US, Taiwan, Puerto Rico etc - Follow Federal Communication Commision rules E domain - Europe, Israel, Mexico, Singapore etc - follow Europe Telecommunication Standard Institute Rules Japan - follow Ministry … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 5 : Regulatory Issues →

CCNP Wireless CUWSS 642-732 Summary Notes 4 : 802.11n hardware

When performing a survey for 802.11n, signal strength is not an accurate predictor of 802.11n performance. Multipath can actually enhance performance with 802.11n clients. 802.11n hardware Disadvantage of non-802.11 hardware is that they may have 2 antennas per band but they both are connected to the same radio circuit so when they receive a signal, the … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 4 : 802.11n hardware →

CCNP Wireless CUWSS 642-732 Summary Notes 3 : RF Applications and Client Devices

RF Applications Data rate is just the link speed and not the throughput (download speed). 802.11b at an 11-Mbps data rate offers on average a 5.5-Mbps throughput. 11b usually degrades performance for other devices in the other bands. Avoid using this band, unless you have old devices. 802.11g at54Mbpsoffersonaveragea20-Mbps throughput butdegradesto6-Mbps throughput as soon as a 802.11b device … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 3 : RF Applications and Client Devices →

CCNP Wireless CUWSS 642-732 Summary Notes 2 : Site Survey Preassessment

Site Survey Pre-assessment can be done using a questionnaire that should have most of this information to enable proper design planning for the WLAN. Customer contact information Total number of sites Is it a New vs existing deployment Band requirements Existing devices Data coverage type (VoWLAN, Data, Location services) Facility information - get maps for … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 2 : Site Survey Preassessment →

CCNP Wireless CUWSS 642-732 Summary Notes 1 : Site Survey Requirements for Different Vertical Industries

A site survey is a task-by-task process in which the surveyor studies the facility to understand the RF behavior, discovers RF coverage areas, checks for RF interference, and determines the appropriate placement of wireless devices. Top considerations: Identify Customer Requirements  and his expectations. What type of environment? Consider the regulatory issues for that particular site Asses the … Continue reading CCNP Wireless CUWSS 642-732 Summary Notes 1 : Site Survey Requirements for Different Vertical Industries →

Cisco Prime: Unit of Measurement for Maps ( Meters and Feet)

Thought I would put up a quick post regarding unit of measurements for the Maps. CPI comes with feet as the default unit and this can be an issue for countries that use meters. I could always recalculate my length in meters and input it in CPI until a client made a rather rude comment … Continue reading Cisco Prime: Unit of Measurement for Maps ( Meters and Feet) →

Cisco Wireless: MSE Patch for Bash Code Injection Vulnerability , aka Shellshock [(CVE-2014-6271, CVE-2014-7169]

Download the patch from Cisco.com Backup the MSE via cisco prime. Refer to my post step 12 and 13 Cisco Wireless: Upgrading MSE from v7.5 to v8.0 via Cisco Prime SSH to the MSE Stop the MSE software  Copy the downloaded file, mse-bash-patch.zip to the /tmp directory on MSE  Login to the MSE as root … Continue reading Cisco Wireless: MSE Patch for Bash Code Injection Vulnerability , aka Shellshock [(CVE-2014-6271, CVE-2014-7169] →

Cisco Wireless: Upgrading MSE from v7.5 to v8.0 via Cisco Prime

Release Notes HighLights Refer to Release Notes for Cisco Mobility Services Engine, Release 8.0.100.0 Compatibility Matrix for version 8.0 Do not run uninstall on the 7.4, 7.5, or 7.6 Release, instead stop the MSE and directly run the installer. Upgrade Process Download the 8.0.100.0 software image from Cisco.com. The file to be downloaded is Verify … Continue reading Cisco Wireless: Upgrading MSE from v7.5 to v8.0 via Cisco Prime →

CWNA Summary Notes: Coverage Analysis Methods

Manual Site Survey Passive manual survey - The radio card collects RF measurements but the client adapter is not associated to the access point during the survey, and all information is received from radio signals that exist at layer 1. Active manual survey - the radio card is associated to the access point and has layer 2 connectively, allowing … Continue reading CWNA Summary Notes: Coverage Analysis Methods →