In order for Skype for Business to function properly, the following network ports need to be open OUTBOUND through the network firewall.
Our IP Addresses are as follows. We would recommend allowing all IP's through your firewall. This will allow your users to utilise local resources if they host meetings closer to a different region.
184.108.40.206 - 220.127.116.11*
North America (California):
18.104.22.168 - 22.214.171.124*
Asia Pacific (Singapore):
126.96.36.199 - 188.8.131.52*
Asia Pacific (Sydney):
*Please note, these are ranges of IP's and not subnet's. The IP's are therefore inclusive.
**If your organisation utilises VIA Connect, we will only advertise to you and you should only route this subnet to us.