Firewall Function on VoIP Networks – VoIP networks are a technology that allows you to communicate long distance by utilizing the internet network.
One example of the application of VoIP technology can be found in social media applications. In its application, VoIP uses network protocols such as H.323, MGCP, SIP, RTP, SDP, or IAX.
Meanwhile, the Firewall itself is a computer network security system that is tasked with protecting software or preventing access that is considered illegal or unauthorized from a private network.
Firewall Function on VoIP Network
VoIP technology is used to conduct long-distance communication via the available internet network, therefore a firewall is needed to anticipate attacks from outside.
Because the function of the Firewall on a VoIP network is to monitor and control all incoming or outgoing access via network connections based on the security rules set by the system.
Therefore, the role of firewall in this VoIP network is very important. Here are the details about the role of firewall in securing VoIP networks.
1. As a Defense Tool
Firewall in VoIP acts as the first line of defense in preventing all types of hacking, where the firewall will prevent the release of confidential information without the permission of the user.
2. Determine Access Permissions
Before any information enters through the VoIP network, the Firewall will perform a security check first. If it is deemed safe, the firewall then grants permission to enter the system. However, if the incoming information has the potential to cause damage to the system, the firewall will block incoming access.
3. Conduct Network Monitoring
Firewalls also play an important role in monitoring networks, this is useful for detecting if there is an attempted network hijacking. If any indication of attempted hijacking is found, the firewall will automatically block access.
Types of System Intrusions That Can Be Prevented by Firewalls
There are 4 forms of system disruption that can be prevented by firewalls on VoIP networks, including:
1. Interception
Interception is an attack action that generally takes the form of wiretapping where an unauthorized party has succeeded in gaining access rights to information. As a result, data on the system can be changed or even retrieved via the network.
2. Interruption
Interruption is an attack on a system where an unauthorized party has been able to control the system, but not completely. This action risks damaging hardware and channels.
3. Fabrication
Fabrication is an attack by inserting fake objects into the target system. This attack usually takes the form of fake messages sent to other people.
4. Modification
Modification is a form of attacker action carried out by changing assets or data in the system as a whole.
That's some explanation of the material regarding the function of firewalls on VoIP networks.
In conclusion, Firewalls play a very important role in securing data and information that runs through VoIP networks. Without a firewall, data and information traveling through a VoIP network can be easily accessed and misused. Thanks