Table 8 shows the service discovery times measured (in ms) to discover various devices (workstations and iPods), along with the percentage increase in service discovery times when IPSec is used. From the results shown in Table 8, we conclude that the deployment of IPSec on the Zeroconf network has a significant effect on the discovery time of both, Workstations and iTunes. When IPSec is used with Mono.Zeroconf (on Windows XP), the performance (in terms of discovery service times) is affected and introduces an overhead of about 81% (in the case of single workstation discovery). This is in contrast to Linux–Avahi implementations which use built-in security support to thwart threats (for example, a recent version 0.6.24 has addressed the buffer overflow vulnerability) and is therefore expected to deliver better performance.