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What binaries have what ports and in what states are those ports: Tcpdump -qns 0 -A -r /var/tmp/capture.pcap Read tcpdump (cap) files and try to make them human readable: Setup a network listener on port 2196 for testing:Ĭapture all the packets for a given port going to a given destination of 10.0.0.48:Ĭapture the packets as above but dump to a pcap file: usr/bin/nc -v -w 15 2195Įstablish a network connection with only allowing ipv4 Scan port 80 of /System/Library/CoreServices/Applications/Network\ Utility.app/Contents/Resources/stroke 80 80Įstablish a network connection with nc -v 80Įstablish a network connection with over port 2195
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View network information as it happens (requires ntop to be installed): View the statistics for a specific network protocol: Trace the routes without looking up names: System/Library/PrivateFrameworks/amework/Versions/A/Resources/airport -s System/Library/PrivateFrameworks/amework/Versions/A/Resources/airport -I Get information about the airport connection on your system: Ping the hostname 5 times and then stop the ping:Ĭustomize the source IP during your ping: Launchctl load -w /System/Library/LaunchDaemons/ Launchctl unload -w /System/Library/LaunchDaemons/ Socketfilterfw -t “/Applications/FileMaker Pro/FileMaker Pro.app/Contents/MacOS/FileMaker Pro”Īdd a route so that traffic for 10.0.0.0/32 communicates over the 10.0.9.2 network interface: Launchctl load /System/Library/LaunchDaemons/.plist launchctl load /System/Library/LaunchAgents/.plistĪllow an app to communicate outside the system through the application layer firewall: Launchctl unload /System/Library/LaunchAgents/.plist launchctl unload /System/Library/LaunchDaemons/.plist Obtain the dns servers used on the Wi-Fi interface: Networksetup -setmanual Wi-Fi 10.0.0.2 255.255.255.0 10.0.0.1Ĭonfigure the dns servers for a given network interface: Ipconfig set en1 BOOTP & ipconfig set en1 DHCPĮcho "add State:/Network/Interface/en0/RefreshConfiguration temporary" | sudo scutil Set the interface called Wi-Fi to obtain it if it isn’t already Networksetup -ordernetworkservices “Wi-Fi” “USB Ethernet”
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Networksetup -setnetworkserviceenabled offĬhange the order of your network services: Networksetup -renamenetworkservice Ethernet Wired Rename the network service called Ethernet to the word Wired: List all of the network interfaces on the system: Switch the active location to a location called Work, but also show the GUID of that location so we can make scripties with it laters: Switch the active location to a location called Work: Networksetup -createlocation Work populate Obtain the active location the system is using:Ĭreate a network location called Work and populate it with information from the active network connection: Show a list of locations on the computer: Get information about how en0 got its dhcp on: Ipconfig getoption en0 domain_name_server Same thing, but setting and echoing a variable: Tips: You can usually get all the info you need with 5-10 pingsĪs the image above shows, the test was successful.After writing up the presentation for MacSysAdmin in Sweden, I decided to go ahead and throw these into a quick cheat sheet for anyone who’d like to have them all in one place. Type “ping -c 5(IP address or host name) and press Enter. This functions similarly to the Network Utility app. When the Spotlight Search pops up, type "Terminal" and hit Enter. Hold down the Command key (⌘) and press the spacebar.Ģ. If the response looks like either of the below examples, the test failed:ġ. If the response looks like this, the test is successful. (In this example it was 10.0.0.2), and hit Enter.Įach Ping test makes four attempts, and gives back a response for each attempt. Type in the address (or IP address you wish to ping). In the RUN box, type in CMD and press OK.ģ.
#MACBOOK COMMAND PROMPT PING WINDOWS#
Hold down the Windows key and the R key at the same time. Pinging can diagnose the strength, distance, and availability of a connection over the internet. The Ping command is a means through which you can test the connection speed between your computer and a website.
#MACBOOK COMMAND PROMPT PING HOW TO#
How to Ping a Website Using Either Windows or Mac Operating Systems