google compute engine - Unknown egress traffic on brand new GCE instance -


i'm new google compute engine , setup new instance become web server. firewall rules left @ default when instance created, leaves open few ports (rdp, ssh, etc) administration. no software installed or dns records pointing server created , left instance running.

after couple weeks, looked @ billing , there on 300 mebibytes of data billed due egress traffic china , america. i'm wondering if normal.

is there particular reason hundreds of megs of traffic went out on brand new, firewalled instance? google cloud service offer kind of network analysis tool breakdown traffic type/destination?

thanks advice.

you can use google cloud stackdriver monitoring see history of ingress , egress traffic of vm instances. more information of traffic (like ips, packets, requests, etc..) need install third party monitoring tool or use packet capturing tool (wireshark, tcpdump,...) analyze traffics.


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