Router check software

This list is extremely incomplete. The links above, that test individual UDP ports, look like this www. If you opt for Common Ports it scans: 53, 68, 69, , , , , , , and It uses nmap terminology.

This exposes devices to the Internet where their poor security, such as default passwords, can be abused. LAN side devices can do much more, in terms of configuring the router they sit behind, but puncturing the firewall is the classic issue. UPnP was never meant to be exposed on the Internet. The protocol has no security at all. No passwords, no encryption, no identity verification, nothing. It was designed to be used between trusted devices.

There should have been none. I blogged about it at the time: Check your router now, before Lex Luthor does. And, many of those 80 millions devices were running UPnP software that was buggy to boot. You can't make this stuff up. So, just disable UPnP? Not so fast.

While it is certainly safer to disable UPnP, it may not be a perfect solution. For one thing, there is a chance a router may only disable UPnP on the LAN side, since it was never supposed to be exposed to the Internet in the first place.

Then too, routers have their bugs, and disabling UPnP may well do nothing at all. Back in , when Steve Gibson created his UPnP test see below he found examples of both issues, saying : "We have confirmed that there are some routers that leave it on outside, even if it's off inside, and some that don't actually turn it off inside.

UPnP is relatively hard to test for as there are two components to the protocol. The second is the ongoing conversation between UPnP enabled devices. In April Akamai found over 4. Of those, roughly , also exposed their vulnerable TCP implementations. The program only ran on Windows and required 32 bit versions of either Java 6 or Java 7. On OS X To use telnet on Windows, open a Command Prompt window, type "telnet ipaddress portnumber".

For example: "telnet There needs to be a space on both sides of the IP address. If the port is closed, Windows will complain that it "could not open connection to the host on port connect failed". If the port is open, the responses vary, you may just see a blank screen.

You can also telnet to a computer by name, such as "telnet somewhere. Typical of Synology there is no date on the article. It was written in and has not been updated since. The initial screen explains its purpose, the Server Query tab is where it does its work.

You can query a computer by name www. It defaults to port 80, but you can force a different port by adding a colon and the port number after the computer name or IP address no spaces. If data comes back from the query, ID Serve displays it all.

This data may identify the server software. If data does not come back, the message, in my experience, will either be "The port is closed, so our connection attempt was refused" or "No response was received from the machine and port at that IP. The machine may be offline or the connection port may be stealthed". ClientTest: ClientTest is another small, portable Windows program.

It is from Joe of joeware. You point it at the IP address of your router, specify a port number and try to connect. The Home Network Administration Protocol is a network device management protocol dating back to There are four problems with HNAP.

One, is that it has a long history of buggy implementations. It can also tell bad guys technical details of a router making it easier for them to find an appropriate vulnerability to attack.

The fact that a router supports HNAP may not be visible in its administrative interface. Worst of all, HNAP often can not be disabled. Four strikes, you're out. Of course, every router has two IP addresses one on the public side and one on the private side.

I suggest testing for HNAP on each. You can learn your public IP address at many websites, such as ipchicken.

For the LAN side of a router, see my Sept. See sample output. If it fails, there will be some type of error about the web page not being able to be displayed, perhaps a Not Found error. If HNAP is enabled, try to turn it off in the router administrative interface and then test again. You may not be able to turn it off. For more, see the HNAP page. What was not revealed was a simple way for Linksys owners to check if their routers were vulnerable.

This has the advantage of not needing to know the router password. For the E, if the firmware is at or below version 2. For the E, if the firmware is at or below version 3. Owners of other E Series Linksys routers are on their own. In these examples, 1. In June we learned that 79 different Netgear devices shared the same flaw.

If you have a Netgear router, try this URL. If it returns information about your router, look for the most recent firmware. Hopefully, it will have been released after June At the time when the flaw was made public June 15, Netgear had done nothing regarding a fix. In October we learned of 10 D-Link routers with critical flaws that will not be fixed.

In January we learned of two information disclosure bugs in some Cisco routers. More details are on the Bugs page. If the URL below shows details about your Cisco router, that is bad. A good result returns nothing but an error message. Here is a sample of a bad result. If you own a Netgear router, it can't hurt to check for information leakage with the URL below. It may leak the device serial number. Many Netgear routers had a security flaw in December see here and here for more.

The command below tests a Netgear router. If this results in a web page with the word "Vulnerable", then the router is vulnerable. Netgear has issued fixes for all vulnerable routers. In September , security firm Embedi found port open on many D-Link routers.

It responds to commands such as one to reboot the router. They did not find any way to close the port. The default IP address is If there is a video surveillance system on your LAN, then hopefully it was not made by Xiongmai. In October , SEC Consult published a big expose about the many ways these systems are not secure.

The number of security flaws is huge. They also offer other suggestions for identifying Xiongmai hardware. SEC Consult feels that the security is so bad it can not be fixed and that the hardware should be discarded. A modem is a computer and it too, can have bugs. Chances are the modem as an IP address such as If nothing else, you should try to access the modem by its IP address so that technical information about your Internet connection is available to you.

Also, you want to see what information is available without a password, some modems expose too much. If there is a password, then change it from the default. An error viewing the page is the good result. See a video of this hack. Again, an error is the good result. For better security, a router may be able to block access to the modem by blocking its IP address. I blogged about modem access from the LAN side of a router in February While it can be helpful to directly access the modem, it can also be dangerous.

See Talk to your modem and Using a router to block a modem. Some routers can do this, some can not. Dumbed down routers, such as the consumer mesh systems eero, Google Wifi, Ubiquiti AmpliFi, etc can not do this. A great way to see if a modem is accessible from the LAN side is to ping it using the command below. Please find the step-by-step process to complete the firmware update. Once the check is complete the firmware upgrade assistant will furnish the details of the current version and newer version if available.

You can go to the support page of your model. The most recent routers have the facility to enable auto-update. Once enabled the router updates the latest version of the firmware whenever it is available. Ensure the router has a continuous power supply during the installation. Once the firmware is updated the router will restart and the internet will be resumed on login.

While updating the firmware is crucial to its performance, any interruption to the firmware update can corrupt the router and render it unusable. Free and super-fast Wi-Fi scanner for your home network. Bitdefender Home Scanner looks for vulnerable devices and passwords, and offers detailed security recommendations for your home network.

Home Scanner lets you see all devices connected to your home network. You get an alert every time an unknown device connects to your wi-fi. Which means you can instantly boot out freeloaders and prevent connection slowdowns.

This feature was introduced as Home Network Protection in version This diagnostic tool provides information about the security of your router. It also displays a list of devices connected to your network.

It may be necessary to consult support resources for your router or contact your internet service provider to resolve certain issues within your home network if you lease or own a device they provided. Wi-FiScan uses an ActiveX control to gather information.