Host filtering - httpmon

Host filtering lets you control which traffic httpmon intercepts. You can block noisy hosts or limit capture to only the hosts you care about.

Block hosts

Use --block to intercept everything except the matched hosts. Separate multiple patterns with commas.

httpmon --block "*.ads.com,*.tracking.com"

Blocked hosts pass through the proxy without being captured in the flow list.

Use --allow to intercept only the matched hosts. Everything else passes through untouched.

httpmon --allow "api.example.com,*.internal"

This is useful when you want to focus on a specific API or set of services.

Allow takes priority over block. If a host matches both an allow pattern and a block pattern, httpmon intercepts it.

Patterns use * as a wildcard on the hostname. The port is stripped before matching.

Pattern	Matches
`*.ads.com`	`tracker.ads.com`, `cdn.ads.com`
`api.example.*`	`api.example.com`, `api.example.io`
`*.internal`	`service.internal`, `db.internal`

Block analytics and ads:

httpmon --block "*.analytics.com,*.ads.com,*.tracking.io"

Focus on your API:

httpmon --allow "api.myapp.com,auth.myapp.com"

Block a single noisy host:

httpmon --block "telemetry.vendor.com"