Kazanavicius, E., V. Kazanavicius, A. Venckauskas, and R. Paskevicius. “Securing Web Application by Embedded Firewall”. Elektronika Ir Elektrotechnika, vol. 119, no. 3, Mar. 2012, pp. 65-68, doi:10.5755/j01.eee.119.3.1366.