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--- zoo:diagnosticsmac [2020/08/14]
127.0.0.1 external edit
+++ zoo:diagnosticsmac [2022/11/21]
joachim
@@ Line 12: / Line 12: @@
   - Type **Network Utility** to search.
   - Double-click **Network Utility** to run.
+>**Note:** With the release of macOS Big Sur, Apple chose to discontinue this application. However, you can still access many of its most useful features using **[[https://www.makeuseof.com/how-to-use-terminal-as-network-utility-replacement/|Terminal]]**.
 =====Diagnostics=====
@@ Line 18: / Line 21: @@
 . **Ping:** The ping diagnostics utility is the primary TCP/IP tool used to troubleshoot connectivity, reachability, and name resolution. Ping verifies IP-level connectivity to another TCP/IP computer by sending Internet Control Message Protocol (ICMP) Echo Request messages. Receipts of corresponding Echo Reply messages are displayed, along with round-trip times.
 {{:zoo:nu_ping.png?640|Ping}}
->**Note:** The Windows firewall default settings block the ICMP echo requests used for ping command. To enable ICMP echo on Windows, go to Control Panel -> Windows Firewall -> Advanced settings -> Inbound Rules and enable File and Printer Sharing (Echo Request - ICMPv4-In) in the active security profile.
 . **Lookup:** The DNS Lookup diagnostic utility displays information that you can use to diagnose Domain Name System (DNS) infrastructure.
@@ Line 27: / Line 28: @@
 {{:zoo:nu_traceroute.png?640|Traceroute}}
-. **Port Scan:** The Port Scan test scans for open TCP ports. In the case of the Zoo, you will want to scane for for TCP Port 80.
+. **Port Scan:** The Port Scan test scans for open TCP ports. In the case of the Zoo, you will want to scan for TCP Port 80.
 {{:zoo:nu_portscan.png?640|Port Scan}}

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