Hi,everyone,please help me.
I use plesk and GCP Compute Engine services. Plesk needs to obtain the monthly updated license through port 443 every month.
Outgoing connections to the Key Administration server are blocked by a local or intermediate firewall.
We've verified that the issue is not within the server firewall:
firewall-cmd --list-all
trusted (active)
target: ACCEPT
icmp-block-inversion: no
interfaces: eth0
sources:
services:
ports:
protocols:
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
Plesk firewall and fail2ban are not installed either. While inspecting Google firewall rules and adding allow-all Egress rule, the situation didn't improve.
Google Firewall is not allowing the outgoing traffic - even a simple connection to the google.com fails both https/http:
curl -v https://google.com
About to connect() to google.com port 443 (#0)
Trying 108.177.125.102…
Connection timed out
Trying 108.177.125.100…
After 86386ms connect time, move on!
Trying 108.177.125.139…
After 43191ms connect time, move on!
Trying 108.177.125.113…
After 21595ms connect time, move on!
Trying 108.177.125.138…
After 10797ms connect time, move on!
Trying 108.177.125.101…
After 5398ms connect time, move on!
Trying 2404:6800:4008:c06::8a…
Failed to connect to 2404:6800:4008:c06::8a: Network is unreachable
Trying 2404:6800:4008:c06::65…
Failed to connect to 2404:6800:4008:c06::65: Network is unreachable
Trying 2404:6800:4008:c06::8b…
Failed to connect to 2404:6800:4008:c06::8b: Network is unreachable
Trying 2404:6800:4008:c06::64…
Failed to connect to 2404:6800:4008:c06::64: Network is unreachable
Failed connect to google.com:443; Network is unreachable
Closing connection 0
curl: (7) Failed to connect to 2404:6800:4008:c06::8a: Network is unreachable
It seems that the GCP higher-level firewall blocks port 443
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