Can I see which exact process or PID is listening on a specific port?

Yes. SSH Desktop maps every active socket back to its process name, PID, user, and executable path (e.g. nginx on port 80/443, dockerd on 2375, postgres on 5432).

Does it distinguish between localhost-only and public internet bindings?

Yes. Sockets bound to 127.0.0.1 or ::1 are tagged as private/internal, while sockets bound to 0.0.0.0 or ::: are highlighted with a security badge warning that they are exposed to the public network.

🌐 Built-in App 13 • Sockets & Interfaces

Visual Linux Network & Port Auditor

Instantly inspect every listening socket, active TCP connection, network adapter, and IP configuration. Identify rogue listeners, verify firewall exposures, and test DNS resolution without terminal friction.

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Linux Network and Listening Port Auditor Screenshot

📷

App 13: Network & Port Auditor Screenshot

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Figure 1: Network & Port Auditor — Real-time listening sockets grid with protocol, local binding, foreign address, PID, process name, and network interface metrics.

Socket Intelligence

Deep Kernel Socket Inspection with ss & netstat

🔌

Listening Sockets Scanner

Parses Linux kernel socket structures (ss -tulpn) to reveal every process listening on TCP/UDP, distinguishing between private loopback (127.0.0.1) and world-accessible (0.0.0.0) bindings.

🖍

Interface Explorer

Inspect physical Ethernet (eth0), VPN virtual interfaces (wg0, tailscale0), and bridge adapters (docker0) with IP addresses, netmasks, MAC, and MTU values.

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Built-in Network Diagnostics

Execute ICMP Ping tests with rolling latency graphs, Traceroute path hop inspectors, and DNS record queries (A, AAAA, CNAME, MX, TXT) straight from the server context.

Socket Exposure Matrix

Understanding Port Bindings & Security Exposure

Binding Address	Exposure Level	Typical Safe Services	SSH Desktop Safety Tag
127.0.0.1 / ::1	Localhost Only	PostgreSQL, MySQL, Redis, internal reverse-proxy backends	Safe (Internal Loopback)
0.0.0.0 / :::	Publicly Exposed	SSH (22), HTTP (80), HTTPS (443)	Public (Verify Firewall Rules)
10.x / 192.168.x / 172.x	Private Subnet	Internal cluster APIs, NFS, Kubernetes pod networks	LAN / Private Network
100.64.0.0/10 (CGNAT)	Overlay Mesh	Tailscale, WireGuard, ZeroTier VPN nodes	Encrypted Mesh Tunnel

FAQ

Frequently Asked Questions

Can I jump from an open port to the firewall rule protecting it?

Yes! Clicking the "Firewall Action" button next to any listening socket opens App 8: Visual Firewall Manager with the port and protocol pre-filled, so you can block or restrict access in one click.

How often does the listening ports table refresh?

You can set auto-refresh to 1s, 5s, 10s, or manual trigger. Any new socket opened by an ephemeral process is highlighted with a pulse animation.

Does this tool support IPv6 sockets?

Yes. Both IPv4 and IPv6 sockets (e.g. :::80 or fe80::...) are fully parsed, formatted, and searchable.

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