ZyXEL Communications ZyWALL 70 Información técnica descargar pdf (Pagina 159)

ZyWALL 1050 Support Notes

159

1.8 VoIP over VPN

Main Office

The VoIP line deployment between different offices is more and more popular. This

application can help enterprise to reduce the operation cost especially saving on long distance

communication fee. The security issues also rise due to the VoIP public network transmission

character. The common VoIP Security issues like call hijacking, identity theft and denial of

service. Thus ZyWALL 1050 can protect the VoIP line security by employing advanced VPN

technology.

 What’s the benefit of using ZyWALL to protect converged network?

‧ Prevent from call hijacking (VoIP over VPN)

‧ Prevent from identity theft (VoIP over VPN)

‧ Mitigate impact of denial of service

We use a simple topology to illustrate and show how ZyWALL 1050 can protect the VoIP line

step by step in the following notes.

Branch Office

ZyWALL 70

ZyWALL

VoIP calls can be

protected by VPN

ment to

rovide

VoIP ATA

VoIP call

IPSec VPN

ZyWALL can

seamlessly work with

Vo IP t raf f ic

–

Server farm

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ZyXEL Communications ZyWALL 70 Información técnica Pagina 159