Download How to Cheat at Voip Security (How to Cheat) by CCS Thomas Porter, Michael Gough PDF
By CCS Thomas Porter, Michael Gough
The fitting Reference for the Multitasked SysAdminThis is the correct advisor if VoIP engineering isn't really your forte. it's the ideal creation to VoIP defense, masking make the most instruments and the way they are often used opposed to VoIP (Voice over IP) structures. It offers the fundamentals of assault methodologies used opposed to the SIP and H.323 protocols in addition to VoIP community infrastructure. * VoIP is not just one other information ProtocolIP telephony makes use of the web structure, just like the other information program. even though, from a safety administrator's perspective, VoIP is varied. comprehend why. * What performance Is won, Degraded, or more desirable on a VoIP Network?Find out the problems linked to caliber of carrier, emergency 911 provider, and the foremost merits of VoIP.* the safety issues of Voice MessagingLearn concerning the kinds of protection assaults you want to guard opposed to inside of your voice messaging system.* comprehend the VoIP conversation ArchitecturesUnderstand what PSTN is and what it does in addition to the H.323 protocol specification, and SIP capabilities and features.* The help Protocols of VoIP EnvironmentsLearn the prone, beneficial properties, and safeguard implications of DNS, TFTP, HTTP, SNMP, DHCP, RSVP, SDP, and SKINNY.* Securing the entire VoIP InfrastructureLearn approximately Denial-of-Service assaults, VoIP carrier disruption, name hijacking and interception, H.323-specific assaults, and SIP-specific attacks.* approved entry starts with AuthenticationLearn the tools of verifying either the person id and the gadget identification on the way to safe a VoIP network.* comprehend Skype SecuritySkype doesn't log a heritage like different VoIP ideas; comprehend the consequences of carrying out company over a Skype connection.* Get the fundamentals of a VoIP defense PolicyUse a pattern VoIP protection coverage to appreciate the parts of an entire coverage. *Provides method directors with 1000s of suggestions, methods, and scripts to accomplish management initiatives extra speedy and efficiently*Short on concept, heritage, and technical information that finally isn't really worthwhile in appearing their jobs*Avoid the time drains linked to securing VoIP
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Additional info for How to Cheat at Voip Security (How to Cheat)
Example text
In Europe and internationally, the E1 is the typical digital interface, with an ISDN BRI carrying 30 bearer channels (30B+D) as opposed to the 23 channels supported by ISDN overT1 (23B+D). 323, SIP, and proprietary protocols like Inter-Asterisk eXchange (lAX). 248/Megaco/Media Gateway Control Protocol (MGCP), Skinny Gateway Control Protocol. One of the difficult problems with VolP trunks, however, is feature transparency between vendors. 323 and SIP exist, but these are not evenly supported by PBX vendors at this point.
Most of the security concerns around analog lines center on how well protected the equipment and cabling systems are from eavesdropping and tampering. Ground start loops will make theft of service less likely because a special phone is required, but otherwise the same basic rules for protecting a PSTN line from tampering apply. O f course, line is also a generic term that may apply to power lines providing electricity to homes and businesses. But when we talk about an analog telephone line, we are talking specifically about the two wires involved: the tip (the first wire in a pair of phone wires, connected to the + side of the battery at the central office or PBX; it is named tip because it was the at the tip of an operator's plug) and the ring (connected to t h e - side of the switch battery and named because it was connected to the slip ring around the jack).
PBX Lines In telephony, a line (or station line) connects endpoint equipment (digital terminals, analog phones, fax machines, modems, or even an IP phone through an IP network) to the PBX (or central office) for switching. An analog line is the private equivalent of a local loop or loop transmission facility. A PBX is more likely than your phone company to support ground start phones and trunks on analog interfaces. Your phone at home seizes control of the line by using loop start, which involves shorting the two ends of the line together to activate the circuit.