Journal of Information Security Research José A. R. Pacheco de Carvalho, Cláudia F. F. P. Ribeiro Pacheco, Hugo Veiga, António D. Reis 12 1 2021 https://doi.org/10.6025/jisr/2021/12/1/15-21 https://www.dline.info/jisr/fulltext/v12n1/jisrv12n1_3.pdf Wireless communication if properly employed with the use of electronic devices can ensure reliable and effective communication. In such communication the people should ensure good security. We did perform the lab analysis on the aspects of Wi-Fi IEEE 802.11a 54 Mbps open links. This study did evaluation of the technology with the proper equipment. We have presented the results with ISO level 4 from TCP experiments. TCP throughput is measured versus TCP packet length. Jitter and percentage datagram loss are measured versus UDP datagram size. Results are compared for both point-to- point and four-node point-to-multipoint links. Finally, we have made the inferences based on the link performance with extensive results.