A Linux administrator implemented a new HTTP server using the default configuration. None of the users on the network can access the server. If there is no problem on the network or with the users'…

Running 'netstat -tlnp' (or the modern equivalent 'ss -tlnp') shows all TCP ports currently bound and which process owns them, confirming whether the HTTP daemon started and is listening on port 80. After verifying the bind, adding a firewall rule to allow inbound TCP traffic on port 80 and 443 addresses the most common reason a default-configured server is unreachable from the network. Together these two steps cover both the service layer and the network access layer without requiring infrastructure changes.

The 'route' command displays the kernel IP routing table and has no ability to show whether a service port is bound or listening, making it the wrong diagnostic tool here.

netcat can probe a port from a remote host but does not confirm server-side binding, and adding a static route is irrelevant when the problem is a host firewall blocking inbound connections.

The 'route' command cannot verify port binding, and reconfiguring SELinux policy is not the standard first corrective step for a default HTTP installation that simply needs a firewall rule.