9 things to do after setting up Wi-Fi network

After setting up or upgrading your Wi-Fi network, you need to check the following before allowing people to connect.

After completing the installation process of Wi-Fi network, people are anxious to turn up immediately and urge people to connect together and access the Internet. However, network security experts advise that it's never a good idea if you spend a few minutes checking it out thoroughly before allowing people to connect. The issues to consider here are the security and performance of wireless networks. The following article will cover more carefully with the 9 notes needed.


1. Check your individual access points

If your new wireless network has multiple access points, this is the first thing to do. You need to see if each device is working, whether the lights are lighted or blinked as described in the supplied manual. If one of the access points is broken then you need to change it so that it does not affect the whole network. You need to keep in mind that access points are wireless access points, which are analogous to network switches. You can attach an access point to any network node.

Also in this step, you need to check that the cable is securely attached, that the settings are correct for the access point to be able to access and transmit the signal. There are many instances of incorrect settings within an access point device that lead to poor reception, even if the user is not connected to a Wi-Fi network. For diagnostics to work correctly, you should check whether the access point manufacturer has an add-on for the Quick Install utility. Typically, Quick Setup utilities have diagnostic functions (diagnose) and instructions for correcting wrong setting errors.

Also in this step, you should review the location of the access point so that it is reasonable for the wave to emit wider and higher coverage. Avoid narrow angular positions, covered by brick walls, metal or wood.


2. Verify the VLAN parameters for each SSID

If your network is set up with multiple virtual LANs and SSIDs then you will probably have incorrect settings on the router, switch or access point. For example, although you specify each SSID with a single VLAN, the VLAN Tagging parameter may be incorrectly declared. This inadvertently causes the system to automatically point to a private VLAN to a public VLAN. In addition, when you run each access point, you need to double-check this parameter to ensure that it is operating perfectly, as it will be very time consuming to correct, properly set up for configured VLANs. wrong.

You need to know, the VLAN is a local virtual network or virtual LAN, which is used to divide the broadcasting field of a network device.
After setting each access point, you should try to connect to each SSID (Wi-Fi network name) to make sure that the terminal is assigned an IP address of a particular VLAN. To ensure that inter-VLAN routing settings are not accidentally enabled or that firewall-related rules are configured incorrectly, you need to allow users to "ping" back and forth between active devices. On the same VLAN and between devices used with other VLANs.


3. Locate again the setting of the SSID

To transmit the signal from the access point to the equipment you need to use, you need to allow the transmitter (here the access point) to transmit the wave with the corresponding SSID. To be easy to understand, for example, access point A with an SSID setting of Wi-Fi_A transmits signals to end users (tablets, phones ...) when these devices connect to this SSID.

If you are using a wireless network controller to manage all your access points, SSIDs and other settings, this step will be simpler. A small note here is that by default, the Wi-Fi network name (SSID) is usually public for anyone to detect, so hiding and changing the SSID is the next step in network security. WIFI. To do this, go to Wireless> Basic Wireless Settings, change the SSID name in the Network Name section, and then select Disable under SSID Broadcast. However, this will make your Wi-Fi connection more difficult to manually enter from the SSID to the password.

Choosing a Wi-Fi network name is also a note, although the SSID name allows up to 32 characters and accepts both dots and spaces ... But you should choose a SSID name that is so simple and unique. It is easy to manage if the network has multiple SSIDs.



4. Check wireless coverage

Again, you need to check whether the Wi-Fi coverage is widespread, although nowadays the technology on the transmitter and the built-in antenna helps to wave through every corner.

In addition to manually moving your phone or laptop around the house and checking how the Wi-Fi network works, there are other ways to do it, rather than using a measuring and overlay analysis tool. wave.

You can use tools such as AirMagnet, Ekahau or TamoGraph to see the output waveform (measured in dBm) of your wireless network. These tools also map the obtained data to make it easier for you to visualize. These utilities also measure the noise level and level of SNR or even hidden SSID network names. Map survey tools allow you to visualize channel usage, signals and other parameters on a heat map. Knowing about the network will be extremely useful, especially for large networks.


5. Check the bandwidth of the Wi-Fi network

Most of the new access points feature automatic channel selection which helps set up the best channel when the device starts up. In addition, some access point models also feature dynamic channel selection to detect continuous or periodic Wi-Fi waves to switch to the best signal channel. But the level of accuracy and accuracy generally varies according to the type of access point, so you should always check for auto-tuning manually and then periodically. However, in order to be able to analyze the correct channels, you first need to learn about the bands and channels of the wireless network.

Today's technology currently has two radio frequency bands (RF) that use Wi-Fi networks of 2.4GHz and 5GHz. Both bands use radio spectrum without registration, meaning that Wi-Fi devices do not have exclusive access to waves in space but must be shared with other wireless devices, including phones. Wires, wireless security cameras, microwaves, Bluetooth and Zigbee devices, radar systems, and more. Wi-Fi devices using older standards such as 802.11b and 802.11g use only the 2.4GHz band, whereas newer 802.11n and 802.11ac devices can use both bands 2, 4GHz and 5GHz.

You will find that the 2.4GHz band is quite cramped and has a duplicate channel design which limits the number of available channels. Although this band is not really wide enough for Wi-Fi networks, sharing it with many wireless technologies without having to register it also makes the band less effective. Meanwhile, the 5GHz band is much wider so there is less congestion, although some usage rules may limit the number of channels available in this band.


6. Check channel usage

There are many facilities that help analyze RF spectrum such as AirMagnet Spectrum XT or Wi-Spy to measure your usage of Wi-Fi channel. These tools also provide signal levels and interference, even from non-Wi-Fi devices. Often, Wi-Fi detection tools and even professional analysis software themselves can not read Wi-Fi signals. However, most professional analytical software and surveying tools have built-in RF spectrum analyzers.



7. Ensure wireless security

You need to know, currently WPA2 wireless encryption is more secure than WPA, WEP; WPA2 uses dynamic encryption keys that change over time (default is 3.600 seconds). Therefore, you need to set the Wi-Fi network security level to WPA2-Personal level under Wireless> Wireless Security> Security Mode. For businesses that have a Radius authentication server, you should choose WPA2-Enterprise, the next you choose AES encryption, and set the encryption key from 8-63 characters complex.

If you need a higher level of security, you can enable access control through the Media Access Control (MAC) address. The MAC address is a unique sequence of numbers and digits per network device, so filtering MAC addresses will help you determine which computers are allowed / not allowed to access Wi-Fi networks. To set up, go to Wireless> Wireless MAC Filter> Enable, select Permit. If the computers have access to the Wi-Fi network, you can immediately press the Wireless Client List button to record the MAC address, otherwise you must manually enter each MAC address of the computers that you allow access. .

Wireless network security does not stop with password protection or MAC address filtering, you also need to protect your devices from intruders and vandalism. Because only need to find the location of the access point, the hacker can clear all network settings in a few seconds. Reset the device to the factory default (Restore factory defaults).


8. Check access speed

To see the actual access speed of the newly created wireless network, you should use an objective measure instead of a sensory inspection through web access. There is a quite useful web-based tool, Ookla's Speedtest.net, for you to choose from. Speedtest can measure upload speed, download speed and bandwidth limits of Wi-Fi networks.

You should also measure the speed of internal access through a wireless network performance measurement tool. Such as Netbook's Nuts About Net, TotuSoft's LAN Speed Test.


9. Ensure security for the admin account

The first thing is that you need to change the admin password for Wi-Fi network the first time you visit. This is necessary because the default passwords of each manufacturer and product line are recruited by hackers. You should also set the password as difficult to guess as possible. Refer to how to set a strong password at www.pcworld.com/T1233742.

Some access point lines allow you to set up access to the administration interface with different addresses. This makes the security better, but you need to save the address and login information so that you do not have to "grope" when you forget later.

A tip for iOS users is that you should save the login information to the administration interface to the Notes app on your iPhone / iPad (with iOS 9 and above). Then activate password protection. Thus, your network becomes more secure with "two layers of protection".
An access point that allows multiple access points to access the Wi-Fi network management interface.




By: Jimmy Saunders

  1. Wi-Fi

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