Each IGMP packet has both an IGMP header and an IP header. Just like ICMP, IGMP does not use a transport layer protocol such as TCP or UDP. What types of IGMP messages are there? The IGMP protocol allows for several kinds of IGMP messages: Membership reports: Devices send these to a ...
A protocol is an agreed-upon way of formatting data so that two or more devices are able to communicate with and understand each other. A number of different protocols make connections, testing, routing, and encryption possible at the network layer, including: IP IPsec ICMP IGMP GRE How does...
Protocol - IGMP Protocol - ICMP Protocol - SLIP Protocol - DVMRP Protocol - SDLC Protocol - Routing Protocol - UDP Protocol - ARP and RARP Protocol - Link-State Protocol - ARP Table Protocol - RTP Protocol - NHRP Network Addressing Addressing - Home Addressing - SubNetting Addressing - Classles...
The OSI protocol stack works on a hierarchical form, from the hardware physical layer to the software application layer. There are a total of seven layers. Data and information are received by each layer from an upper layer. After the required processing, this layer then passes the information ...
The Internet Control Message Protocol (ICMP) is an error reporting protocol that is an integral part of the IP protocol. ICMP communicate control data, information data, and error recovery data across the network. Problems that are less severe than trans
Defines rules based on source IPv4 addresses/destination IPv4 addresses, IPv4 protocol types, ICMP types, TCP source/destination port numbers, and UDP source/destination port numbers. 6000-6031 Basic ACL6 IPv6 Defines rules based on source IPv6 addresses, fragmentation information, and time range...
ICMPV4 Interrupt control message protocol controls all errors. These mistakes are handled byICMP protocolduring the delivery of the message to target problems. IGMP Internet group management protocol helps in multicasting. Physical Layer The physical layer interacts with the top level of the TCP/IP ...
The destination address of an ICMP Request packet is a broadcast address or subnet broadcast address. Attack from packets with invalid TCP flag bits A TCP packet contains six flag bits: URG, ACK, PSH, RST, SYN, and FIN. If the six flag bits are all 1s, the attack is a Christmas tree...
Advanced ACL and advanced ACL6 The rule that defines a VPN instance is processed first. The rule that defines a protocol type is processed. If the protocol types are the same, the rule that defines the smallest source IP address range is processed. The wildcard mask with the most 0 bits...
Advanced ACL and advanced ACL6 The rule that defines a VPN instance is processed first. The rule that defines a protocol type is processed. If the protocol types are the same, the rule that defines the smallest source IP address range is processed. The wildcard mask with the most 0 bits...