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