You must whitelist the following Lacework outbound IPs if you want to allow Lacework to communicate with your servers.
US:
35.165.121.10 35.165.83.150 52.43.197.121 34.208.85.38 35.166.181.157 52.88.113.199 44.231.201.69 54.203.18.234 54.213.7.200
EU:
18.198.97.214 3.124.134.226 35.156.214.191