The only true way to work around this is to place the CG3000 into bridge mode and then place a router/firewall behind it. SIP ALG is enabled by default on the MR1100. This topic has been marked solved and closed to new posts due to inactivity. The phones are on a LAN environment that prior to changing routers to the Netgear were getting the public IP provided to them by the STUN server. To clarify what is not checked is: Disable port scan and dos protection Default DMZ server Respond to ping on internet port Disable IGMP proxying Under advanced setup disable UPnP and delete all … On Cisco devices, SIP-ALG is known as SIP Fixup and this option is enabled by default. NETGEAR NAT Filtering Disable SIP ALG. MTU default 1500. *(note, we have seen sites that made this change and still encountered issues, suspicion is that it does not function in a true bridge mode. Community Team As a rule SIP ALG is poorly programmed on 95% of router companies, and the 5% the do work correctly are specifically VOIP routers, so this will remain turned off. The latest Nighthawk M2 MR2100 however does give user the option to disable SIP ALG via the webUI. There is no way of easily disabling via the webUI. The only thing that should be checked is Disable SIP ALG then check open instead of secured. Navigating SIP ALG. With most setups, it is best to disable this feature as this service usually does more harm than good. To disable the SIP ALG / SIP Fixup please run the following command on the configuration interface Routers (General) no ip nat service sip tcp port 5060 no ip nat service sip udp port 5060. We hope you'll join the conversation by posting to an open topic or starting a new one. How to Disable SIP ALG on a Netgear. Netgear, a major American manufacturer of networking hardware, supplies routers for business use that include a feature called SIP ALG (Application Level Gateway). To turn off SIP ALG, from the router admin page, click on Advanced Tab, then setup, then WAN setup. So the only difference is the Netgear. SIP ALG (Application Layer Gateway) is a feature which is enabled by default in most Netgear routers and inspects VoIP traffic as it passes through and modifies the messages on-the-fly. 5062 is … SIP ALG or Session Initiation Protocol Application Layer Gateway comes equipped with many commercial routers including those offered by NETGEAR. Default DMZ checked and my xbox's static ip address entered . Its purpose is to prevent issues raised by a router’s firewall during a VoIP call. Regards, Arodi. In few situations this is useful, but in most situations SIP ALG can cause problems using the service. Disable SIP ALG checked then to the right open selected. Basically, SIP ALG is bad and you want to do everything you can to bypass it and you can do one of 2 things (or both) 1) Disable SIP ALG in your router and 2) ensure your SIP Port is NOT on 5060. Disable port scan and dos protection checked. Respond to ping on internet port and Disable IGMP parodying both unchecked. At the bottom of the page under NAT filtering, make sure the disable SIP ALG box is checked then restart your router for the changes to take affect. The following section will help to assist most with disabling this feature on their router. Advanced settings; LAN setup: at the bottom add reservation setup a static ip address In most cases, it is recommended that SIP ALG, SPI and SIP transformations are disabled. Comcast Netgear Gateway Model CG3000 DCR - will not allow customer to disable SIP ALG.