Computer Internet network security News

The current implementations of code signalling, message delivery, and code protocol fall short of providing adequate call party authentication, end-to-end integrity, and confidentiality of messages with VoIP. VoIP converts voice signals from the telephone into digital signals (data packets) that travel over the Internet. If left unprotected, this traffic is vulnerable to spying, theft, and data manipulation.

In order to help prevent or resolve these security threats, enterprises should protect data and VoIP environments by implementing a combination of antivirus, firewall, intrusion detection systems, and virtual private networks (VPNs). These technologies must also be optimised for voice.

Now people use a multitude of methods to prevent administrators from noticing them on the new network. One way is that they set up a firewall on the laptop, which has all of the incoming ports blocked to their machine. This to prevent their machine from showing up on a networks can, especially if the scan used ping to determine if there is a computer answering at that IP address. Most good scanning software can scan a network without using ping. This merely causes the scan to take any extreme amount of time. But, a good network administrator should always supplement their normal scanning routine with a non ping based solution.

Many laptops with wireless cards are vulnerable even if they’re not connected to a hotspot. These systems have their wireless network card running in what’s called ad-hoc mode. Ad hoc, sometimes called peer-to-peer mode, enables wireless clients to communicate with each other without a wireless access point (AP) to facilitate everything. Check your wireless settings and ensure ad hoc is not enabled if you don’t need it. Otherwise, it may be possible for an attacker to join your ad-hoc network and muck around on your system.

Regardless of the protocols, wireless networks will remain potentially insecure because an attacker can listen in without gaining physical access.  In addition, the protocol designs were security-naïve.  There are several existing tools that implement attack techniques that exploit the weaknesses in the protocol designs.  The integration of wireless networks into existing networks also has been carelessly done. 

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