Windows Security Tutorials - Herong's Tutorial Examples - v3.01, by Dr. Herong Yang
224.0.0.1 - The All Hosts Multicast Group
This section provides a quick introduction of the All Hosts Multicast Group, 224.0.0.1. All systems on the network must join the All Hosts Multicast Group on all its IP interfaces.
The first IP multicast address, 224.0.0.1, is called the All Hosts Multicast Group. All systems on the network must join the All Hosts Multicast Group on all its IP interfaces. Here is what I did to verify this on my Windows XP system:
I used the "ipconfig /all" to see all my IP interfaces:
C:\herong>ipconfig /all ... Ethernet adapter Wireless Network Connection: Connection-specific DNS Suffix . : myhome.westell.com Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG ... Physical Address. . . . . . . . . : 00-19-D2-D3-AA-D3 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.0.5 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.0.1 DHCP Server . . . . . . . . . . . : 192.168.0.1 DNS Servers . . . . . . . . . . . : 192.168.1.1 Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : myhome.westell.com Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Eth... Physical Address. . . . . . . . . : 00-16-D4-E9-C5-19 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.0.4 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : DHCP Server . . . . . . . . . . . : 192.168.0.1 DNS Servers . . . . . . . . . . . : 192.168.1.1
Ok. I have 2 IP interfaces: a wireless interface and an Ethernet interface. Now I used the "netsh interface ip show joins" to see who joined the All Hosts Multicast Group:
C:\herong>netsh interface ip show joins Interface Addr Multicast Group --------------- --------------- 192.168.0.5 224.0.0.1 192.168.0.4 224.0.0.1
This confirms that 2 interfaces on my system joined the All Hosts Multicast Group.
Table of Contents
About This Windows Security Book
Windows 8: System Security Review
Windows 8: System Security Protection
Windows 8 Defender for Real-Time Protection
Windows 7: System Security Review
Windows 7: System Security Protection
Windows 7 Forefront Client Security
Norton Power Eraser - Anti-Virus Scan Tool
McAfee Virus and Malware Protection Tools
Spybot - Spyware Blocker, Detection and Removal
Keeping IE (Internet Explorer) Secure
Malware (Adware, Spyware, Trojan, Worm, and Virus)
HijackThis - Browser Hijacker Diagnosis Tool
IE Add-on Program Listing and Removal
"Conduit Search" - Malware Detection and Removal
"Tube Dimmer", "Scorpion Saver" or "Adpeak" Malware
Malware Manual Removal Experience
Vundo (VirtuMonde/VirtuMundo) - vtsts.dll Removal
Trojan and Malware "Puper" Description and Removal
VSToolbar (VSAdd-in.dll) - Description and Removal
PWS (Password Stealer) Trojan Infection Removal
►MS08-001 Vulnerability on Windows Systems
MS08-001 - Vulnerability in TCP/IP
IP Multicast and IP Address Range
"netsh" Commands for Interface IP
►224.0.0.1 - The All Hosts Multicast Group
MulticastListener.java - A Simple Multicast Listener Program
All Hosts Multicast Group, 224.0.0.1, on Vista Systems