Question about Zyxel Prestige 334 Router

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Limited or no connectivity.

My router was being attacked recently by the DOS attack. So I need to refresh frequently.. and connection is slow. So i've decided to return the router to its factory configuration. After I do that, I can't go online. I've followed the manual step by step but i still cant get it. I can go online with my modem. But once i plug in the router, i cant. i can get in the web configurator offline but only the first page. When i press login, it says you need to connect. Please help me..

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Re: Limited or no connectivity.

Look in the manual for instructions to do a "Hard reset" usually involves holding the small reset button on the back with a pen (or paperclip) for about 30 seconds. this will absolutely factory reset your router including passwords. the default passwords for your router apear to be "user- Blank, password- 1234" try those settings after reseting the device and see if you can login and change your settings

Posted on Aug 15, 2007

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Why the power light stays amber on my netgear wndr4500 router??

Can you login to your netgear router if so will it let you connect to your provider if not your router is maybe messed up and needs to be replaced and it might have been infected by a virus that attacks routers, If you live in the use try and switch to Verizon and get a moterola cable router that should solve your problem if you are in Barcalona then maybe your provider could supply you with a fibre optic connection and compatible router.

Oct 14, 2014 | NetGear Wndr4500 N900 Dual Band Gigabit...


Secure your wifi router .

Here are 3 basic ways to keep your WiFi router or connection secure:
1. Change the router's Default Username and Password.
Choose an uncommon username, something only you can know. Then choose a strong password - keep it at least 8 characters long, using a combination of letters, numbersand characters. Keep it secure and don't share it with others.
2. Turn on Encryption.
Right now, the best encryption technology is WPA2. Select that one if your router supports it. If you're still in the process of purchasing one, avoid routers that only support WPA (Wi-Fi Protected Access) and WEP (Wired Equivalency Privacy) and purchase one that supports WPA2. There are available tools on the Internet that can easily crack WPA and WEP encryption.
3. Change the Default SSID and Disable Broadcasting.
The SSID is your network name. By default, routers use a generic manufacturer SSID like "netgear", "linksys" or "default". Change it to something else, something uncommon. You can use the same principle as choosing/creating a strong password. A network using a default SSID can be perceived by the attacker as a weak and poorly configured network and will most likely attack it first. Another thing you can do with your SSID is to shut off or disable broadcasting. Keeping it "out of sight" will lessen the chances of it being attacked. Don't worry about shutting this feature off because you can still connect to it manually.

on Mar 26, 2011 | Routers


How to secure a wireless network, access point, or router

Once you have setup your wireless router, it is a good idea to secure it, so that attackers have a harder time getting to your network (if they can get to it at all), and so that people cannot steal your internet, and possibly slow your connection's overall speed. Here are some key tasks to preform in order to secure your network:
  • Disable SSID Broadcast - Doing this makes your network virtually invisible to other devices looking for a connection
  • Change SSID - Most hackers/attackers know the default SSID for routers. Changing it will make it harder for them to guess your network's name (and knowing the SSID can be half the battle).
  • Enable Encryption - This makes it so that you need a password to connect to your router wirelessly. Obviously, setting a password makes it harder for a hacker/attacker to access your network. (I suggest setting a WPA2-PSK rather than WEP, because WEP is able to be cracked)
  • Change Router's IP Address - This is another default setting that hackers/attackers find useful. Changing this, just like changing the SSID, will make it harder for people to figure out your network's address (which would give them a better opportunity to change the settings on your router, just as you are now).
  • Change Router admin password - If someone somehow gets onto your network, doing this will make a last line of defense against a person changing your router configurations.
  • Enabling Wireless MAC Filtering - Doing this will allow you to prevent or allow a specific device or devices connection to your network. (note: not recommended for the regular house hold, because it can be a big hassle for connecting new devices)
Though similar in features, each device has a different way of go about these tasks. If you need further assistance for your particular device, or have any other questions, please feel free to contact me.

After preforming these tasks, your network will be much more secure. I am looking forward to getting feedback on this guide.

on Feb 26, 2010 | Routers

1 Answer

How did someone connect to linksys unsecured wireless that has mac ids listed only - no othersmo

If you're running unsecured, then all someone has to do is capture the traffic with an easily obtained packet sniffing software while a legitimate computer is connecting to the router using it's filtered MAC address. Once they get the MAC address of a legitimate computer, "spoofing" or changing the attack computer's MAC address to broadcast the stolen MAC address is just a matter of changing an entry in the Windows registry on the attack machine.

I would go into the router and shut down the wireless for now and just use the hard wire. Leave the wireless OFF for a couple of days. When you bring it back up use WPA2 security.

Jan 28, 2011 | Linksys Wireless-G WRT54G Router

2 Answers

Possible problems with the router?

There is a few infections that specifically targets routers like your Linksys.

One method attacks the router directly the other method uses your PC(s) that are attached to the router or use the wireless to attack the router.

The results of the attack are the same as what you have described.

How the attack is able to happen is due to the use of a weak password or default password used to access the router's administration page.

To correct this issue, you need to be able to log into the router's administration console. Since the router is having problems to begin with we need to reset the router and disconnect the router from the DSL or cable modem preventing any attacks while we make the necessary changes.

- First unplug the router from the modem.
- Second unplug the power from both the router and the modem.
- After 30 seconds of the router being powered off, reapply the power to the router, leaving the modem unpowered still.
- On the back of the router find the reset button. This is a small hole in the back of the unit that will require a toothpick or pencil/pen to push.
- Insert the pen/pencil, toothpick or paperclip into the hole pressing the button. Continue to hold the button down for 1 minuet.
- The lights on the front of the router will flash then the factory defaults will be reloaded. NOTE that this step will wipe out all settings from the router including any infection.
- Using Ethernet, physically connect a clean PC to the router.
- To access the administration page of the router open a web browser.
- The web browser will error out as it is not able to connect to the internet.
- In the address space of the web browser, enter the following
- You should be presented with the login for the router
- The username is left blank the pass word is "admin"
- After you are in to the router, go to the administration section of the console and first change the password to the router. I suggest using something that is not easily guessed as one method of infection uses a list of commonly used passwords to guess at the router login. I like to use the serial number form the router for the password.
- Also while in the Administration section, make sure that the router is not remotely accessible for administration. This is another method of infiltration into your router.
- Next we need to establish security for the wireless.
- Go to the wireless section and enable security. I suggest using WPA/WPA2 for use with Wireless G connectivity otherwise you will have to use WEP.
- If using WPA/WPA2 I suggest using TKIP+AES with a strong passphrase that will also not be easy to guess.
- Save the wireless key somewhere so it can be put on wireless devices you allow access to your router.
- Once the new password and wireless security is established, hook the modem back up to the router and the power back to the modem.

It may take a few mins to come up but your router should be secured from the current exploits.

Feb 23, 2010 | Linksys Wireless-G WRT54G Router

1 Answer

Does the router interfere or slow down your internet loading email? And what is the life of a router in years usually?

Yes router can make your connection a bit slow since the router has a firewall inside it that protect your network from outside attack, the life span of a router usually more than 3 years....

Oct 30, 2009 | Dynex DX-E401 Router

1 Answer

I have a belkin router f5d7230-4. whenever i plug in my laptop from work to vpn to my jobs network, it wont go through. i had it working before and i havent made any changes since that time. in the...

The UDP flood suggests a possible DoS (Denial of Service) attack which hoses your connectivity but doesn't harm your PC or change anything. Can you surf the web through the Belkin okay when not VPN ing? Is it just your VPN connection that doesn't work? Do you get any message or dialog boxes popping up when you try to connect saying anything about the remote host not reachable or you username/password is not valid. You VPN client should be giving you some indication of the failure to connect. Any other PC at home to VPN to work with? Also possible that your PC has been denied access to work because your PC caused problems on the corp network. You probably would not be aware of that. Is there an IT department at work to support you?

Sep 02, 2009 | Belkin (F5D7230-4) Router (587009)

1 Answer

Router Firewall

Not entirely. Hardware firewalls (such as the one in your router) will block incoming connection attempts based on the port they're using, the protocol, and a number of other factors (varied between firewall brands). Some are designed to block only popular attacks (DoS, PoD, crackers on port 80, Telnet connect attempts, etc...) while others will block a larger variety of attacks.

Anyways, software firewalls will block almost all incoming Internet traffic (except for the ones defined in the exceptions) along with almost all outgoing Internet traffic. The only way I find this to be useful is if you're trying to keep some private information private, or if you use that computer to determine if some software is trying to phone home (web beacon, trojan, dialer, etc...).

I really don't see the need for Software firewalls unless you're a hard-core web-surfer and don't care what you click on. If you do like the extra security, perhaps one of the better software firewalls is made by ESET.

I prefer ESET to Symantec's Personal Firewall because Symantec's Firewall on one of my older systems was hijacked by a virus a few years back which allowed the virus unprecedented access to the root of my Operating System. The virus gutted the computer without any alerts from Norton CE or the Firewall.

Anyways, I hope this was the answer you were looking for. If not, please feel free to respond with more details on what you were truly asking. All the best. ;-)

Jan 30, 2009 | Linksys Wireless-G WRT54G Router

1 Answer

How to prevent Port Scanner Attacks on Wi Fi Modem

Withouth knowing the exact model I dont have specifics, but the scanner attacks can usuually be prevented or at least minimzed by a setting in the router that prevents pinging. Some models are better at this than others. Is the unit setup with a passkey? and if so do you know the method?

Dec 24, 2008 | Belkin Wireless G Plus MIMO (F5D9230-4)...

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