Description: SIP ALG, which stands for Application Layer Gateway Session Initiation Protocol, is a feature implemented in many routers and network devices. Its main function is to facilitate the management of Voice over IP (VoIP) connections by modifying and optimizing the SIP packets that pass through the router. SIP is a protocol used to establish, modify, and terminate real-time communication sessions, such as voice calls and video conferences. SIP ALG works by intercepting these packets and adjusting their content to be compatible with the network, which can help resolve connectivity and NAT (Network Address Translation) issues. However, this functionality can be a double-edged sword, as it can sometimes interfere with SIP traffic, causing problems with call quality or connectivity itself. Therefore, the configuration of SIP ALG must be handled carefully, and in some cases, disabling it may be the best solution to ensure optimal performance of VoIP applications. Managing these network features is crucial to ensure that communication applications work smoothly in various environments, as SIP communicates across many different platforms and systems.