Top tips to secure your Wi-Fi connection at home

Internet & Mobile Security Blog | MATE | 26 December 2017

TL;DR — Quick Takeaways

• Your router comes with default settings that are easy for hackers to guess. We recommend you change them
• Renaming your network and using a strong password is the single most important step you can take
• WPA2 encryption is the current standard. If your router doesn’t support it, it’s time to upgrade
• Most routers have a built-in firewall for protection. It’s usually off by default, so we suggest you turn it on
• Guest networks sound friendly, but they’re a security risk unless you manage them carefully
• These steps take less than 20 minutes and you only need to do them once

Why Does Home Wi-Fi Security Actually Matter?

Install your router, switch it on, jump on the internet, and you’re away. You don’t need to worry about it any more, right?

Most people don’t think twice about their Wi-Fi once it’s working. If Netflix loads and Spotify plays, job done.

But here’s the thing, we live in a world where personal data is valuable, and home Wi-Fi networks are a surprisingly common target. An unsecured or poorly secured network can give someone access to your browsing activity, your connected devices, and in some cases, your personal information.

The good news? Securing your home network doesn’t require a tech background. Most of the steps below take a few minutes each, and once they’re done, they’re done. You won’t need to revisit them unless you buy a new router.

Let’s go through it.

Step 1: Change Your Router’s Default Name and Password

This is the single most important thing you can do.

Every router ships with a default network name (called an SSID) and a default admin password. These are often printed on a sticker on the back of the device. The problem is that manufacturers use predictable patterns, things like “admin/admin” or simple number combinations like “0000” or “1234.”

Hackers know these defaults. In fact, there are publicly available lists of default router credentials for most major brands. If you’ve never changed yours, you may as well have left the front door unlocked.

What to change

There are actually two separate things to update here, and it’s worth understanding the difference:

Your Wi-Fi password — this is what your phone, laptop, and other devices use to connect to the internet. Change it to something at least 12 characters long, mixing letters, numbers, and symbols. Avoid obvious things like your address or pet’s name.

Your router’s admin password — this is separate from your Wi-Fi password. It’s what you’d use to log into your router’s settings page (usually by typing something like 192.168.1.1 into your browser or using the router’s mobile app). This one is often overlooked, but it’s just as important. If someone gets onto your network and your admin password is still set to default, they have full control of your router.

What about the network name (SSID)?

Changing your network name won’t directly improve security, but it helps in two ways. First, routers that broadcast their default name make it easy for someone to look up that model’s default credentials. Second, if you’ve had people connected to your old network name, changing it means they’ll need to reconnect, which is a useful way to boot off anyone who shouldn’t still have access.

One option is to stop broadcasting your SSID altogether (this is called a “hidden network”). It won’t appear in the list of available Wi-Fi networks, so someone would need to know it exists before connecting. It’s a minor extra layer, but worth considering if you want to be thorough.

How to do it: Log into your router’s settings page (the address is usually on the sticker on the back of your router) and look for “Wireless Settings” or “Wi-Fi Settings.” From there you can update both the network name and the password.

Step 2: Turn On Encryption

Encryption scrambles the data that travels across your network so it can’t be easily read by anyone intercepting it.

Think of it like sending a letter in a locked box versus an open envelope. Without encryption, someone with the right tools sitting nearby could, in theory, read unprotected data passing over your Wi-Fi.

The current standard to look for is WPA2 (sometimes shown as WPA2-Personal or WPA2-PSK). Most modern routers support it, you just need to make sure it’s enabled.

How to enable it

Log into your router settings and navigate to the security or wireless section. Look for an option called “Security Type” or “Encryption.” Set it to WPA2 or WPA2-PSK. You’ll be asked to set an encryption password, this can be the same as your Wi-Fi password for simplicity.

If your router only offers WEP or WPA (without the “2”), those are older standards with known weaknesses. It may be worth upgrading your router. The team at MATE can help you understand your options.

If all of this sounds like too much, don’t stress. Call your MATE’s Aussie-based support line and ask them to walk you through it. Most support teams can guide you through the steps in under 10 minutes.

Step 3: Turn On the Firewall

Your router almost certainly has a built-in firewall. The problem is it’s often switched off by default.

A firewall monitors the traffic coming in and out of your network and blocks anything that looks suspicious. It won’t protect you from everything, but it’s an important layer of defense against unsolicited access from outside your home.

On most routers, the firewall setting is listed as:

• NAT (Network Address Translation)
• SPI (Stateful Packet Inspection)

Both do a similar job. If you see either option in your router’s security settings, turn it on.

What about firewall software on your devices?

A router-level firewall protects your whole network, but it’s also worth having firewall software on your individual devices, particularly your computer. Windows has Windows Defender Firewall built in (make sure it’s on). Mac users have a similar option in System Preferences under Security & Privacy.

For smartphones, your operating system handles most of this automatically, but it’s still worth keeping software updated, as updates often include security patches.

Step 4: Be Careful With Guest Networks

Guest networks seem like a good idea. They are a separate connection you can hand out to visitors without giving them access to your main network.

And they can be, if set up correctly. The problem is that a lot of people enable them and then forget about them, leaving an open or poorly secured connection running in the background indefinitely.

The risks

• A guest with a compromised device can unknowingly spread malware to your network
• If the guest network is set to open (no password), anyone nearby can use it
• Some guest network configurations still allow access to shared files or connected devices

The safer approach

If you do use a guest network, set a password for it. Use a different password to your main network, and change it regularly (especially after visitors leave). Many routers let you set a time limit on guest network access, which is a cleaner option if you only need it occasionally.

If you’re not using a guest network, switch it off entirely. There’s no benefit to leaving it on.

Step 5: Keep Your Router’s Firmware Updated

This one gets skipped more than anything else.

Firmware is the software that runs your router. Manufacturers release updates periodically that fix security vulnerabilities, the same way your phone gets software updates.

If your router’s firmware is out of date, it may have known security gaps that haven’t been patched.

How to check

Log into your router’s admin panel or mobile app and look for a “Firmware Update” or “Software Update” option. Some newer routers update automatically. If yours doesn’t, it’s worth checking every few months.

If your router is more than five years old and no longer receiving updates from the manufacturer, it may be worth replacing it. Older hardware often has vulnerabilities that won’t be patched because the manufacturer has stopped supporting it.

Step 6: Disable Remote Management (Unless You Need It)

Some routers have a feature called “remote management” or “remote access” that allows you to log into your router’s settings from outside your home network — useful if you’re travelling and want to check something.

If you’re not actively using this, turn it off. It’s another potential entry point that doesn’t need to be open.

Where to find it: Look in your router’s advanced settings or administration panel for “Remote Management” or “WAN Access.” Set it to disabled.

A Note on Public Wi-Fi

Everything above applies to your home network, but it’s worth a quick mention of public Wi-Fi (cafes, hotels, airports, and so on).

Public networks are inherently less secure because they’re shared with strangers. A few habits that help:

• Avoid logging into banking or sensitive accounts on public Wi-Fi
• Look for HTTPS in the address bar before entering any personal information
• Consider using a VPN (Virtual Private Network) if you regularly work from public networks.  This encrypts your traffic regardless of the network you’re on

Wrapping Up

There’s more to safe browsing than installing an antivirus on your phone or laptop. Your home Wi-Fi network is the entry point for everything connected in your house — and if it’s not secured, you’re exposed.

The steps above don’t require technical expertise. Most of them take five minutes each, and once you’ve done them, your network will be significantly more secure than the average household.

Start with step one – change the default name and password. That alone will put you ahead of most people.

Frequently Asked Questions

How do I log into my router’s settings?

Type your router’s IP address into your browser’s address bar. The most common addresses are 192.168.1.1 or 192.168.0.1. You can also check the sticker on the back of your router — it usually has the default login address, username, and password printed there.

What’s the difference between my Wi-Fi password and my router’s admin password?

Your Wi-Fi password is what connects your devices to the internet. Your router admin password is what you use to access the router’s settings page itself. They’re separate things, and both should be changed from the defaults.

How do I know if someone is using my Wi-Fi without permission?

Log into your router and look for a section called “Connected Devices” or “DHCP Clients.” This will show a list of everything currently connected. If you see devices you don’t recognise, change your Wi-Fi password immediately — this will disconnect everyone and require them to reconnect with the new password.

What’s the most secure Wi-Fi encryption option?

WPA3 is the newest and most secure standard, but not all devices support it yet. WPA2 is the current practical standard and is secure for most home users. Avoid WEP and the original WPA — both have known weaknesses.

Do I need to change my Wi-Fi password regularly?

Not necessarily, as long as your password is strong and you trust the people who have it. It’s worth changing it if you’ve given it out to someone you no longer want to have access, or if you suspect someone has connected without your permission.

Is hiding my Wi-Fi network name (SSID) effective security?

It’s a minor extra layer but not a primary security measure. A determined person can still find hidden networks with the right tools. Your strongest protections are a strong password and WPA2 encryption.

What is WPA2 in plain English?

It’s a security standard that encrypts the data travelling across your Wi-Fi network. Think of it as a lock on your wireless signal — without it, data passing through the air is potentially readable by anyone nearby with the right equipment.

What happens if I forget my router admin password?

You can factory reset your router — usually by holding down a small reset button on the back for 10-15 seconds. This will restore all settings to default, including the original password printed on the sticker. You’ll need to set everything up again, but it’s a clean start.

Should I be worried about neighbours using my Wi-Fi?

If your network is unsecured or using a weak password, it’s possible. Beyond the cost of sharing your connection, someone using your network is also a potential security risk — any malicious activity they carry out would trace back to your IP address. Securing your network with a strong WPA2 password is the fix.

My router is old. Should I replace it?

If your router is more than five or six years old and can’t support WPA2, yes. Manufacturers also stop releasing security updates for older models, which means known vulnerabilities won’t be patched. A newer router is a worthwhile investment for security alone — plus you’ll likely notice better speed and range.

What does a firewall actually do?

It monitors the traffic between your home network and the internet, blocking anything that looks suspicious or unauthorised. Your router’s built-in firewall handles traffic at the network level. Combined with device-level firewall software, it significantly reduces your exposure to outside attacks.

Do smart home devices affect my Wi-Fi security?

They can. Smart TVs, speakers, security cameras, and other connected devices can have weaker security than computers or phones. If any of these devices are compromised, they could become an entry point into your network. Some routers let you put smart home devices on a separate network segment — worth exploring if you have a lot of them.

Need help with your home network setup? MATE’s Australian-based support team can walk you through it. Or check out our NBN plans if you’re thinking about making the switch.