***

id: de6d8042-ace0-466a-8d5b-01ee4fd67789
title: Allow SignalWire IPs through your firewall
slug: /allow-signalwire-ips-through-your-firewall
x-custom:
ported\_from\_readme: true
--------------------------

SignalWire does not publish a static list of IP addresses. Customers should periodically resolve the following domains and update their firewall rules accordingly:

```bash
dig sip.signalwire.com | egrep ^sip | awk '{ print $5 }' | xargs -n1 -I{} iptables -A INPUT -s {} -j ACCEPT

dig relay.signalwire.com | egrep ^relay | awk '{ print $5 }' | xargs -n1 -I{} iptables -A INPUT -s {} -j ACCEPT

dig firewall.signalwire.com | egrep ^firewall | awk '{ print $5 }' | xargs -n1 -I{} iptables -A INPUT -s {} -j ACCEPT
```

<Warning>
  Use domain-based authorization rather than hardcoded IPs — addresses are subject to change. Media originates from a wide variety of locations and is non-deterministic.
</Warning>