---title: Update Your Firewallslug: /guides/allowing-signalwire-ips-through-your-firewallsidebar_position: 1x-custom: ported_from_readme: true---SignalWire does not publish a list of IPs for public consumption as IPs may change. Customers can periodically run a command, or create a service to update firewalls regularly:dig sip.signalwire.com | egrep ^sip | awk { print $5 } | xargs -n1 -I{} iptables -A INPUT -s {} -j ACCEPTIt is highly recommended to use domain-based authorizing as those are subject to change! Media comes from a wide variety of locations and is non-deterministic.
