| No technology is without its flaws and same | | | | call management boxes, these boxes are |
| is the case with the VoIP system. With | | | | vulnerable to hackers' attacks and viruses, |
| increasing popularity and reliability, it has | | | | this can have a down falling effect on an |
| become prone to hackers. Since many things go | | | | organization's reliability and cost them a |
| through phone line, hackers can intercept | | | | lot of money for data retrieval and security |
| private information. Since there has been no | | | | upgrading. Waiting for something to happen |
| dangerous attack on an IP system yet, | | | | and trying to solve the problem after that |
| therefore, most customers of VOIP are more | | | | can be costly for an organization and for its |
| likely interested in cost and quality than | | | | customers. Therefore, before making the move |
| security. However, new security devices are | | | | to VoIP, companies need to acquaint |
| being developed with increasing security | | | | themselves with the security issues about |
| threats, which can be incorporated into | | | | this new technology and plan protection in |
| all-in-one applications to protect whole | | | | advance. |
| information networks. Such devices that | | | | |
| protect the whole network reduce individual | | | | Encrypting VOIP voice traffic, using Layer |
| expenses that are imposed by VoIP security | | | | 2Tunneling protocol and Secure Sockets Layer, |
| threat. | | | | firewalls, and restricting access by using an |
| | | | alternate for VOIP traffic are a few of the |
| VoIP converts analog signal to digital | | | | ways to cut any VOIP security issues. In |
| signals and send them through internet. It | | | | addition a company should secure the network |
| opens up the telephone network to attacks | | | | by putting in place layers of security to |
| from hackers, who can intercept and listen to | | | | protect at all levels including servers, |
| phone conversations and steal sensitive | | | | conversations, computers, and telephones. |
| information like credit card number and bank | | | | Just as you protect your PC with virus |
| details. They can even launch denial of | | | | software, firewalls etc similarly you can |
| service attacks and shut down an ongoing | | | | protect a VoIP system with similar measures. |
| conversation, or send virus over the internet | | | | L2TP acts as a 'data link layer protocol' for |
| to disrupt the services. The biggest threat | | | | tunneling network traffic between two callers |
| hackers are imposing is manipulation of VoIP | | | | over the Internet. SSL allows client/server |
| networks for making free calls. Then there | | | | applications to communicate in a way designed |
| are some hacking websites that let people to | | | | to prevent eavesdropping, tampering, and |
| control the phone number that appears on the | | | | message forgery. These techniques prevent the |
| receiver's caller-id display this is called | | | | hackers from capturing the information |
| caller-id spoofing. VoIP loges information on | | | | packets as they pass through the internet. |