In-depth solutions to Cisco Wireless Router Vulnerabilities

The features of Cisco Wireless routers have previously been introduced to you. Today, we are trying to better understand the source of the vulnerabilities and the inner relationship between the vulnerabilities and functions. Recently, it was found that Cisco Wireless Router allows hackers to easily access the network configuration page of the router.

1. What are the functions of Cisco Wireless Router? Why is it used in soho?

The primary wireless device consists of an independent ap and a wireless router that integrates a Wireless ap and a broadband access router. Independent APs are widely used in companies that require a large number of APs for large-scale coverage. all APs are connected over Ethernet and connected to independent Wireless LAN firewalls.

A wireless router is used much in the soho environment. In this environment, an ap is enough. In this way, the wireless router that integrates the Broadband Access Router and ap provides a single machine solution, which is easier to manage and cheaper than the two separate machine solutions. A wireless router generally includes a network address translation (nat) Protocol to support network connection sharing among Wireless LAN users. This is a useful feature in the soho environment. They may also have basic firewalls or information packet filters to prevent port scanning software and other attacks against broadband connections. Finally, most wireless routers include an Ethernet converter with four ports to connect several wired PCs. This is very convenient for managing routers or connecting a printer to a LAN.

2. Cisco Wireless Router daemon discovers serious Security Vulnerabilities

Security Expert Alan Rateliff said recently that he found a security vulnerability in Cisco's Linksys WRTS54G 802.11g wireless router. This security vulnerability allows hackers to access the network configuration page of a vro when the user's firewall is disabled. Alan Rateliff said that when he tested Cisco's new wireless router "Linksys WRTS54G 802.11g", he found that when the firewall function of the device was disabled, ports 80 and 443 were still open. This allows hackers to easily access the network configuration page of The vro.

It is quite dangerous to allow hackers to access the vro configuration page at will, because once the anti-spam and anti-virus configurations of the vro are changed, the user loss will be extremely high. In addition, hackers can attack devices connected to routers, such as PCs or laptops. Rateliff vividly said: "This is equivalent to giving the key to the hacker after the door is locked ."

Fortunately, this vulnerability occurs only when the user closes the firewall. Due to the improvement of security awareness, users generally do not close the firewall function easily. However, Rateliff reminds users to check whether their router settings are correct in a timely manner. According to data from Synergy, a research institute, Cisco's Linksys Wireless Router is selling well in the market. At present, it accounts for 20% of the household and small wireless network markets. Cisco has released a patch for the Cisco Wireless Router vulnerability on its website.

1. Application point of view: introduces Cisco Router Security Configuration
2. Knowledge of nine Cisco Routers
3. Cisco Wireless Control System Vulnerabilities
4. How to improve the security of Cisco router Remote Management
5. Application of CBAC in Cisco Router Security