- For port
443
of an ALB, it's often set public but some domains are restricted access outside of office/working network especially those one do not have login phase (it's always possible to setup this but in this case assume no), for example,grafana.dev.com
,prometheus.dev.com
,datadog.dev.com
, etc. - To overcome this, use sourceIp in HTTPS 443 listener rule. Assume office network is
14.64.20.233/32
and118.20.134.243/32
![Cover image for Using SourceIp in ALB Listener Rule](https://media.dev.to/cdn-cgi/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fi%2F1e4gr5msqpe73aumqrxg.jpg)
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