Comecei a jogar com o Wireshark e vi que o Firefox está se conectando a alguns IPs mesmo quando não estou conectado a nenhum site
lsof -i -a -p 'firefox_pid'
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
firefox 2329 user 37u IPv4 118753 0t0 TCP user-N501JW:37086->ec2-52-51-142-18.eu-west-1.compute.amazonaws.com:https (ESTABLISHED)
firefox 2329 user 39u IPv4 129663 0t0 TCP user-N501JW:43368->server-52-85-74-162.lhr3.r.cloudfront.net:http (ESTABLISHED)
firefox 2329 user 68u IPv4 140375 0t0 TCP user-N501JW:37680->wj-in-f189.1e100.net:https (ESTABLISHED)
firefox 2329 user 88u IPv4 137617 0t0 TCP user-N501JW:34916->par03s13-in-f78.1e100.net:https (ESTABLISHED)
firefox 2329 user 90u IPv4 137568 0t0 TCP user-N501JW:58404->151.101.1.69:https (ESTABLISHED)
firefox 2329 user 97u IPv4 137533 0t0 TCP user-N501JW:33818->93.184.220.29:http (ESTABLISHED)
firefox 2329 user 98u IPv4 114507 0t0 TCP user-N501JW:58916->ec2-54-201-82-144.us-west-2.compute.amazonaws.com:https (ESTABLISHED)
firefox 2329 user 121u IPv4 134757 0t0 TCP user-N501JW:36918->par21s05-in-f142.1e100.net:https (ESTABLISHED)
firefox 2329 user 124u IPv6 137540 0t0 TCP user-N501JW:35008->xx-fbcdn6-shv-01-cdg2.fbcdn.net:https (ESTABLISHED)
firefox 2329 user 125u IPv4 133683 0t0 TCP user-N501JW:57762->a23-217-230-180.deploy.static.akamaitechnologies.com:https (ESTABLISHED)
Como saber quem está fazendo esses pedidos?