Hello CCNA Voice Students,

We are happy to announce that our CCNA Voice Video on Demand is now complete and ready to be shipped. This product is fully finished after going through the initial development and beta testing phases. To learn more about our this product,  click HERE to chat with a Training Advisor.

• Describe characteristics of a Cisco Unified Communication Solution
• Describe the functions of Cisco Unified Communication components
• Call Signalling and media flows
• Describe implications of a VoIP network
• Describe user creation options
• Creating and modifying user accounts
• Create or modify endpoints for Cisco Unified Communications Manager
• Describe calling privileges functions
• Create and modify directory numbers
• Extension Mobility, Call Coverage, Intercom and Native Presence
• Enable end users for Cisco Unified Presence
• Describe user creation for voice messaging
• Configure Cisco Unifies Presence
• Generate CDR and CMR reports
• Monitor voicemail usage
• Generate RTMT reports
• Preform manual system backup
• Provide end user support
• Verify PSTN connectivity
• Troubleshoot endpoint issues
• Identify and resolve voicemail issues
• Reset signal devices and More

Regards,

Andrew B. Shipton – IPexpert, Inc.
Project Manager – Sr. Technical Support Engineer
ashipton@ipexpert.com
LinkedIn:   http://www.linkedin.com/in/andrewipexpert
Twitter:      andrewipexpert
Office:   +1 (810) 326-1444,  Extension:  212
eFax:     +1 (810) 454-0130
For *Free* CCIE Training, please visit:   http://bit.ly/vLecture

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In the last two articles in this series, I covered PIM register process in general, as well as how the process looks like when there is a source transmitting, but no interested clients. In this post, let’s explore how the process looks like when there are interested clients, but there is no source.
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In this final post in the series, we will examine a simple way to rate limit SYN packets in order to foil attacks involving the SYN attack technique.

Policing SYN Packets

In order to effectively rate limit the SYN packets in the correct manner, you should monitor your network baseline in order to determine the appropriate SYN packet rate that represents your acceptable packet flows. The policing can then be set effectively to guard against attack conditions.

Examine the following access list that is configured on our network edge device:

access-list 100 deny tcp any any established
access-list 100 permit tcp any any

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Have you ever wanted to attend one of IPexpert’s industry-leading CCIE classes?
Have you ever had problems really understanding a specific technical topic?

Do you want to improve your chances at pass the CCIE Lab?

Do you want to see why IPexpert’s  CCIE instructors are considered the best in the training industry?

Do you want IPexpert, the company who has trained more CCIEs in the world, to help you?

…How would you like some FREE CCIE Lab training?

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In this post in the series, we are going to examine another excellent step that goes a long way in preventing the potential devastating damage that a DDoS attack can cause. The goal here is to POLICE traffic that could potentially be used in the attack. Since many classic DDoS attacks utilize PING traffic in their attacks, this post will provide that example. Keep in mind, however, that this technique could be applied to whatever form of traffic that a new attack seeks to use in their exploit.

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