Guide to secure your VoIp Network, contain information about :Threats on IP Telephony Systems and their Sources, Major Threats to IP Telephony Systems. otentially Vulnerable Components, Sources of Vulnerabilities (1) Open Environment Relatively Easy to Attack [O] IP telephony systems typically work in an open network with a lot of threats, while traditional telephony systems run in a rather closed and telephone-only network. Design Fundamentals The security consists of confidentiality (C), integrity (I) and availability (A), referred to as “CIA”. Axioms for Secure IP Telephony This chapter represents overarching design considerations for secure IP telephony systems. These general principles should be implemented in every installation of IP telephony systems. Develop Appropriate Network Architecture [I]. Ensure the security of the voice gateway system to other VoIP systems and PSTN. 4. Axioms for Secure IP Telephony 4.1 Develop Appropriate Network Architecture [I] 4.2 Check Acceptability of Risk [I] 4.3 Internet Node Necessity for IP Telephony Devices [O] 4.4 Patch Management is Mandatory [O] 4.5 Confidentiality of Phone’s Credential [A] 4.6 Confidentiality of Calls and Voice [I] 4.7 Firewall and Other Protection Mechanisms [I] 4.8 Wireless LAN [I] 4.9 Attention to Soft-Phones or PC-based IP Phones [I] 4.10 Attention to Application Servers for Voice [I] 4.11 Physical Security around VoIP System [O] 4.12 Power Blackout Consideration [O] 4.13 Review Statutory Requirements with Legal Advisors [L] 4.14 E-911 Consideration [L–US] 4.15 Vulnerability of SIP and IP specification [O] 5. IP Telephony and Encryption 5.1 Fundamentals of Encryption 5.2 Targets of Encryption 5.3 Encryption in UNIVERGE IP Telephony Solution.
Tags : ip telephony devices, ip telephony systems, power blackout, protection mechanisms, ip telephony solution, internet node, voice gateway, soft phones, gateway system, practice principles, design fundamentals, application servers, voip systems, network architecture, open environment
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