Little Introduction:

On March 2010, Telekom Malaysia Berhad (TM) launched its High Speed Broadband (HSBB) service, called ‘UniFi‘. TM’s UniFi high speed broadband packages comprises services of high speed Internet, video (IPTV), and phone, with speeds of 5 Mbps, 10Mbps and 20Mbps.

Upon sign up, the customer will receive 4 pieces of equipment:

• Fiber Broadband Termination Unit (BTU), ie. where you connect the fiber optic cable into.
• WiFi router (D-Link, D-615 with custom firmware), which is plugged into the fiber BTU.
• Set-Top box for IPTV and VoD, which will plug into the WiFi router.
• DECT phone plugged into the Fiber BTU.

I’m not going to rant about the UniFi or TMNet’s services, nor speed, nor the much debated bandwith cap that TM said they’re going to impose.

I’m going to talk about the security (or the lack thereof) of the default WiFi router setup.

Once the customer signed-up for UniFi services, the TM’s technician will do all the equipment installations in your premises/homes for you. Nice, BUT, the default WiFi router setup done by the technicians has very low security features:

• The router is not configured to drop ICMP packet, making an attacker able to ping those unprotected routers, telling him it’s alive and connected to the internet.
• The firewall is disabled.
• The router has remote access enabled. Making it worse, it has no authorised IP filter (has default config of 0.0.0.0, meaning anybody, anywhere, can log in to your router web interface). The web interface port number are also set to default.
• And the BIGGEST, BADDEST flaw: The router’s Administrator password is still the default ones!!

With the default configurations as above, even a child with a web browser sitting miles away could go into your routers!! I’ve done this personally, where I can easily scan a range of UniFi’s IP addresses, and log on to their routers.

I understood if the above setup is to ease TM’s effort to do some troubleshooting/support remotely for their customers. However, The least they can do is change the default administrators password for the WiFi routers! Change the password to something unique for each customer. They still can keep records of the users router’s password if they need to do troubleshooting/support purposes remotely.

Not all TM’s customers are technically savvy to secure their own home networking. So, the purpose of this article is to share/educate/guide some basic protection for your home network.

Secure your home network:

Login in to your router’s web interface. Open a web browser, go to http://192.168.0.1 . You will be prompt for admin username and password. Open your D-Link Router manual for more info.

1. Change your Router’s Administrator password.

• Go to ‘Maintenance’ tab, under ‘Admin Password’ section. Rename your password there.

2. Rename your Wireless Network Name/ SSID.
The default SSID has the customer’s name, i.e.: myfirstname@unifi. This possible could leads to privacy issues, as outsiders knows who’s using what ISP services (UniFi, Streamyx, etc).

• Go to ‘Setup’ tab, click ‘Wireless Setup’ menu on the left.
• Under ‘Multiple Wireless Network Name (SSIDS)’ section, click ‘Multiple Wireless Network Name Setup’ button.
• You will be taken to a page with ‘Wireless Network Name’ section. Rename your existing Wireless Network Name/SSID there.

3. Disable Remote Access to your router.

• Go to ‘Maintenance’ tab, under ‘Remote Management’ section. Un-check ‘Enable Remote Management:’ check box.

4. Enable Firewall

• Go to ‘Advanced’ tab, click ‘Firewall & DMZ’ menu on the left.
• Under ‘Outside Firewall Setting’ section, checked the ‘Enable WAN to LAN Firewall :’ check box.
• Then, checked all the check box inside the rows of ‘DOS ATTACK’, ‘POST SCAN ATTACK’ and ‘SERVICE FILTER’.
• To find out what all these settings do, feel free to Google each of the check box descriptions.

Few suggestions to TM, I strongly recommends that the technicians doing the UniFi’s installation, increase some level of customers home networking security. The very basic they can do is to change the WiFi routers default administrator’s password upon installation, and keep that password if they need to do troubleshooting/support purposes remotely.

Be safe.

Home Automation & Networking – A complete guide on how to Automate & Network your Home, ranging from a simple installation to a total integrated Home control system.

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