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How to Find All Hosts on Network with nmap

Jul 24, 2018 - 6 Comments
How to find all hosts on network with nmap

Many advanced users often need to find and list all hosts on a network, often for IP discovery, connecting to a remote machine, or some other system administration or network admin purpose. One of the easiest ways to find all hosts and the host IP addresses on a network is by using the nmap command … Read More

iPhone or iPad Says “Incorrect Password” Fails to Join Wi-Fi? Here’s the Fix

Jul 19, 2018 - 64 Comments

Some iPhone or iPad users may occasionally encounter a strange issue where they are attempting to join a familiar wi-fi network, but iOS throws up an “Incorrect password” error message, and the iPhone or iPad refuses to join the wireless network. Often users will see the “Incorrect password” wi-fi error despite they being certain the … Read More

How to Use Cloudflare DNS on Mac OS for Speed & Privacy

Apr 9, 2018 - 28 Comments
How to use Cloudflare DNS on a Mac

CloudFlare now has a consumer DNS service that is very fast and also centered around privacy. CloudFlare DNS says they won’t log IP addresses or sell your data, which in the modern era is perhaps more important than ever for users who value the vague concept of internet privacy. This article will show you how … Read More

How Fix File Sharing in macOS High Sierra After Installing the Root Bug Security Update

Nov 29, 2017 - 7 Comments
Fix broken file sharing in macOS High Sierra after installing the root bug patch

Some Mac users have discovered that file sharing capabilities, connections, and file sharing authentications are no longer working after installing the root bug Security Update for macOS High Sierra. While the Security Update 2017-001 patch is a critical update to install to prevent unauthorized access to any Mac running macOS High Sierra, breaking file sharing … Read More

How to Tell if Mac is Using 802.11ac, 802.11n or Other Wi-Fi Protocol

Aug 1, 2017 - 10 Comments
Check wi-fi wireless band protocol in use on a Mac

Most users connect a Mac to a wi-fi network and don’t think too much about which 802.11 wi-fi band protocol is in use, but many advanced users and network administrators do want to know which 802.11 wireless standard is in use. Typically someone would want to know which wi-fi PHY standard is in use to … Read More

View IP Addresses of LAN Devices from Command Line in Mac OS

Nov 3, 2016 - 7 Comments
Terminal in macOS

If you need to view the IP addresses of other hardware on the same LAN (Local Area Network) as a Mac, the command line arp tool works quite well. You’ll quickly find other devices IP and accompanying MAC addresses, which can make direct network connections easier and be helpful for many other network and troubleshooting … Read More

Auto Connect to VPN on Boot & Login in Mac OS X

Aug 10, 2016 - 29 Comments
Auto connect to a VPN on Mac

If you use a VPN with a Mac for either work or personal reasons, you may wish to have the Mac automatically connect to the VPN service when the Mac is booted or upon login. Or maybe you just want the VPN to automatically reconnect if the connection drops and disconnects. This is easily accomplished … Read More

How to Find a Router IP Address from iPhone or iPad

May 5, 2016 - 5 Comments
Find router gateway IP address info in iOS

Getting the IP address of a connected router or default gateway is pretty simple in iOS, so if you find yourself in a situation where you’re using an iPhone, iPad, or iPod touch and need to get a connected router or gateway address, you won’t have to leave iOS to do so. This is frequently … Read More

The Mac Hosts File: How to Modify /etc/hosts in Mac OS X with TextEdit

Feb 29, 2016 - 14 Comments
How to Edit the hosts file in TextEdit in Mac OS X

The Mac hosts file is a system level file located at /etc/hosts which maps IP addresses to host names for Mac OS X networking. Many users edit and modify the hosts file so that they can point a domain to a different IP address, whether for the purpose of local development, blocking sites, or simply … Read More

AirDrop Not Showing Up in iOS Control Center? This is the Easy Fix

Feb 1, 2016 - 40 Comments
Set AirDrop to be available to Everyone

AirDrop is a great file sharing protocol for iOS and Mac OS that allows users to quickly and easily send files, photos, contacts, and other data back and forth between iPhones, iPads, iPod touch, and Mac OS X. But sometimes AirDrop doesn’t show up at all in iOS, which obviously prevents the feature from working … Read More

How to Change DNS Server Settings in Mac OS X

Dec 5, 2015 - 16 Comments
Adding and changing DNS servers in Mac OS X

Having appropriate DNS settings is essential for a Mac to be able to successfully access internet domains, whether it be a website like http://osxdaily.com or a remote server. DNS, which stands for Domain Name Server, essentially translates numerical IP addresses to the readable domains that most internet users are familiar with, and thus without properly … Read More

How to View & Watch the Firewall Log in Mac OS X

Nov 24, 2015 - 6 Comments
View the application firewall log in Mac OS X with Console app

Users who have enabled the firewall in Mac OS X may find it useful to be view, read, and monitor the associated logs with the system firewall. As you’d expect, the app firewall logs show you what applications and processes have attempted to connect to the Mac, including accepted and refused connections. There are several … Read More

How to Enable Stealth Mode in Mac OS X Firewall for Added Security

Nov 18, 2015 - 19 Comments
Enable Stealth Mode Firewall in Mac OS X

Mac users who want a bit more network security can turn on an optional firewall feature in Mac OS X called Stealth Mode. With Stealth Mode enabled, the Mac will not acknowledge or respond to typical network discovery attempts with ICMP ping requests, and will not answer connections attempts made from closed TCP and UDP … Read More

Fixing Wi-Fi Issues in OS X El Capitan

Oct 16, 2015 - 266 Comments
Fix Wi-Fi Problems in OS X EL Capitan

Though Apple has largely resolved the wi-fi issues that persisted in some Macs with prior OS X releases, some users with OS X El Capitan may encounter wireless networking issues after updating to the latest OS X release. Typically the wi-fi problems are in the form of dropping connections or strangely slow speeds, and the … Read More

Find Detailed Wi-Fi Connection History from Command Line of Mac OS X

Jun 3, 2015 - 10 Comments

There are some situations where knowing exactly what wireless networks a Mac has connected to and when that connection was last established can be helpful. We’ll demonstrate how to uncover a comprehensive listing of specifics about previously joined wi-fi networks on a Mac, which will include the last connection date and time (to the second!), … Read More

How to Read .cap Packet Capture File on Mac OS X with tcpdump

May 1, 2015 - Leave a Comment

Whether performing a packet trace or sniffing and capturing packets from a network, the result is usually the creation of a .cap capture file. That .cap, pcap, or wcap packet capture file is created regardless of what you’re using to sniff a network, a fairly common task among network administrators and security professionals. Perhaps the … Read More

How to Sniff Packets & Capture Packet Trace in Mac OS X the Easy Way

Apr 23, 2015 - 14 Comments
Reading a captured packet trace PCAP WCAP file in Mac OS X With Cocoa packet Analyzer app

The Mac includes a variety of powerful wireless network tools that offer many features which are helpful for administration and IT purposes, including the ability to sniff packets. Here we will demonstrate how to perform a packet trace in OS X easily by using the built-in Wi-Fi Diagnostics app. Using Wi-Fi Diagnostics Sniffer function is … Read More

Disconnect from Wi-Fi Network in Mac OS X Without Turning Off Wireless

Apr 19, 2015 - 4 Comments
Disconnect from a Wi-Fi network in Mac OS X quickly

Mac users can quickly disconnect from a wi-fi network by using the wireless menu in Mac OS X. This simple task is incredibly useful for managing and juggling multiple networks, whether for something as simple as using iPhone Wi-Fi Hotspot or even a more advanced task like packet sniffing. It’s important to note disconnecting is … Read More

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