I Integrated Services for Provincial Government of DKI Jakarta is one of the work programs in improving the quality of service to the community and in its implementation using Cisco Aironet Wireless LAN media as one of the Internet and Intranet access infrastructure. Under Department of Communications Information and Public Relations, the internet and intranet access infrastructure is managed and optimized as a part of the main tasks of its operations or Tupoksi. However, in practice, the use of Wireless LAN (WLAN) has many disadvantages such as many disturbances that occur as a cracker attack, intruders and even hackers. Because it's flexibility to access makes the cracker, intruders and hackers easy to do their job.In the development of WLAN implementation in 2011, the Department of Communication Information and Public Relations as the holder of the responsibility of intranet and internet service provision related to the scope of the work unit Jakarta provincial government establish a security system using Wi-Fi Protected Access (WPA). WPA security system implementation is done in several stages, such as the configuration of the Wireless Access Point, Wireless Controller (WLC), RADIUS Server, and the latter is a Wireless Client.In implementation, the Department of Communication Information and Public Relation Jakarta Provincial Government as the holder of responsibility for the provision of public services both intranet and internet security systems establish the use of Wi-Fi Protected Access (WPA). The selection system was done after the study of wireless LAN security is carried out in early 2011. Based on the analysis conducted in this thesis, it can be concluded that the conditions prior to the implementation of security on the WLAN system is very worrying because of the disruption caused by an unauthorized person to cracking, intruding, hacking and even spread a lot of computer viruses. In the year 2011 made the implementation of a safety system in the infrastructure WLAN Wireless Provincial Government of DKI Jakarta. Preceded by a review of the implementation point of view based on security levels, reliability and access speed of up to conclude the use of WPA as a suitable system for the Information Communication Infrastructure and Public Relations Office Provincial Government of DKI Jakarta. Conditions after the end of this implementation, the performance of WLAN Integrated Services has experienced a very significant improvement in the security, and reliability without sacrificing speed and bandwidth.