wireshark

The video walks you through configuration NAT64, NAT46, and DNS64 on Cisco ASA using Object NAT to connect IPv6 to IPv4 network. We will look at both Stateless and Stateful NAT64 and NAT46, and highlight their pros and cons, and suggest when you should use one over the other. For Stateful NAT64, we will configure static, dynamic NAT, and PAT. We will also go over how DNS64 can help translating IP embedded in DNS packet as it crosses the v4-v6 network boundary. Packet analysis on Wireshark will be performed to help us gain better understanding of the IP address translation.

The video walks you through configuration NAT64, NAT46, and DNS64 on Cisco ASA using Object NAT to connect IPv6 to IPv4 network. We will look at both Stateless and Stateful NAT64 and NAT46, and highlight their pros and cons, and suggest when you should use one over the other. For Stateful NAT64, we will configure static, dynamic NAT, and PAT. We will also go over how DNS64 can help translating IP embedded in DNS packet as it crosses the v4-v6 network boundary. Packet analysis on Wireshark will be performed to help us gain better understanding of the IP address translation.

The video demonstrates a method to interface IPv6 to IPv4 network using NAT-PT on Cisco router. We will cover the basic 1-to-1 static NAT, dynamic NAT, and PAT primarily translating IPv6 source IP to IPv4. We will then look at DNS ALG feature that helps rectifying an embedded IP as DNS reply crosses IPv4-IPv6 boundary, while analysing it by Wireshark. We will configure IPv4 Mapped NAT feature to automate destination NAT process by mapping the entire IPv4 address space to IPv6 /96 subnet. The lab finishes with modification of the NAT global timeout values.

The video demonstrates a method to interface IPv6 to IPv4 network using NAT-PT on Cisco router. We will cover the basic 1-to-1 static NAT, dynamic NAT, and PAT primarily translating IPv6 source IP to IPv4. We will then look at DNS ALG feature that helps rectifying an embedded IP as DNS reply crosses IPv4-IPv6 boundary, while analysing it by Wireshark. We will configure IPv4 Mapped NAT feature to automate destination NAT process by mapping the entire IPv4 address space to IPv6 /96 subnet. The lab finishes with modification of the NAT global timeout values.

The video demonstrates IPv6 HSRP configuration on Cisco router. We will show how HSRP is integrated with IPv6 Router Advertisement message to provide first hop redundancy to end-hosts. HSRPv6 will be operationally compared to the IPv6 Default Router Preference method and any distinctions between the two will be made. We will use a router and Windows 7 computer as our test end devices.

The video demonstrate an alternative to IPv6 address assignment with Stateful Autoconfiguration on Cisco router. The concept of DHCP in IPv6 has changed slightly where DHCP server no longer provides subnet mask and default gateway, but instead end-hosts obtain these information through Router Advertisement. We will look at how we can use Other and Managed Config flags to control what type of information end-hosts would obtain from a DHCP server. A router and Windows 7 computer will be used as our test clients in this lab.

The video looks further into mechanism that IPv6 uses to provide default router information to local hosts on Cisco router. This includes ability to influence end hosts to choose a preferred default gateway. We will specifically look at Default Router Preference flag in the RA packet on Wireshark, as well as performing router failover and observe exactly host the end hosts change their default gateway. 

The video walks you through basic IPv6 interface configuration on Cisco router, and introduces you to a concept of Link-Local, Site-Local and Global addresses. We will look at how an IPv6 host can obtain an IP address through stateless autoconfiguration using a Cisco router and Windows 7 computer as our test devices. We will review the IPv6 fundamental messages used in neighbour discovery from debug outputs and Wireshark packet captures.

The video demonstrates how to enable Netflow on Cisco Nexus 1000V to collect network traffic information. We will configure Netflow at vEthernet interfaces, run FTP and RDP as our test applications, and review information displayed on Netflow collector. We will also perform packet capture and analyze Netflow version 9 packets.

• Netflow v9
• Netflow Collector
• Netflow Packet Analysis

The video discusses how NAT affects embedded IP in an application payload as the packet passes through a Cisco NAT router. Two widely used applications: DNS and FTP, are chosen for our demonstration. We go into great detail to analyze FTP protocol behavior using both passive and active mode. Lastly, we look at how a router cope with non-standard FTP port. Wireshark captures are reviewed throughout this video.

• Application-Level NAT (ip nat service)