python icmp

//Background run-dstatic //Only in static mode (default is ICMP mode)-dnorename //rename process name no longer-diptables //Clear all Iptables rule table entriesFor example:Gcc-ddetach-dnorename-wall-s-O Prism prism.cCross-compilation under different platforms requires the relevant library files:Android Platform:Apt-get Install GCC-ARM-LINUX-GNUEABIARM-LINUX-GNUEABI-GCC-DSTATIC-DDETACH-DNORENAME-STATIC-MARCH=ARMV5 Prism.c-o PrismLinux 64bit:Apt-get I

Many people may misunderstand the ICMP protocol, especially in terms of security. So what do we think about ICMP security? We will discuss this issue in detail today. For more information, see the following section. 1. Security importance of ICMP The characteristics of the ICMP protocol determine that it is very easy t

Security is a problem that we can never ignore, especially network security, which is not easy to control. Let's talk about ICMP protocol security in detail, I hope you can refer to some of the content in this article. 1. Security importance of ICMP The characteristics of the ICMP protocol determine that it is very easy to be used to attack routers and hosts on t

ICMP is one of the most important protocols in network protocols. It implements some effective message control to complete some transmission errors. So how should we understand this agreement? What is its workflow? Since the IP network is unreliable and cannot guarantee information transmission, it is important to notify the sender when a problem occurs. ICMP is a mechanism for providing network fault probl

ICMP redirection PrincipleICMP redirection is one of ICMP control packets. Under certain circumstances, when a router detects that a machine uses a non-optimized route, it will send an ICMP redirection packet to the host and request the host to change the route. The router also forwards the initial datagram to its destination.ICMP Application Analysis-

command uses the IP lifetime (TTL) field and ICMP error messages to determine routes from one host to another host on the network. Tracert Working principle The Tracert diagnostics determine the route to the destination by sending an Internet Control Message Protocol (ICMP) response packet to the destination with different IP time to live (TTL) values. Requires that each router on the path decrements at le

I. Overview: 1. ICMP agrees to report errors on the host or route and provides relevant exceptions. ICMP is a standard protocol for the Internet, but ICMP is not a high-level protocol, but an IP layer protocol. Generally, ICMP packets are used by the IP layer or higher-level protocols (TCP or UDP. Some

I. Overview: 1. ICMP agrees to report errors on the host or route and provides relevant exceptions. ICMP is a standard protocol for the Internet, but ICMP is not a high-level protocol, but an IP layer protocol. Generally, ICMP packets are used by the IP layer or higher-level protocols (TCP or UDP. Some

I. Overview: 1. ICMP agrees to report errors on the host or route and provides relevant exceptions. ICMP is a standard protocol for the Internet, but ICMP is not a high-level protocol, but an IP layer protocol. Generally, ICMP packets are used by the IP layer or higher-level protocols (TCP or UDP. Some

I. Overview: 1. ICMP agrees to report errors on the host or route and provides relevant exceptions. ICMP is a standard protocol for the Internet, but ICMP is not a high-level protocol, but an IP layer protocol. Generally, ICMP packets are used by the IP layer or higher-level protocols (TCP or UDP. Some

I. Overview: 1. ICMP allows the host or route to report errors and provide relevant exceptions. ICMP is a standard protocol for the Internet, but ICMP is not a high-level protocol, but an IP layer protocol. Generally, ICMP packets are used by the IP layer or higher-level protocols (TCP or UDP. Some

// ICMP HeaderTypedef struct _ tagx_icmphdr{Unsigned char I _type; // typeUnsigned char I _code; // codeUnsigned short I _cksum; // checkUnsigned short I _id; // identifierUnsigned short I _seq; // serial numberUnsigned long I _timestamp; // current time = (unsigned long): gettickcount (); } Xicmpheader; The first 32bits of various ICMP packets are three fixed-length fields: Type field (8 bits), Code field

ICMP Packet AnalysisI. Overview:1. ICMP allows the host or route to report errors and provide relevant exceptions. ICMP is a standard protocol for the Internet, but ICMP is not a high-level protocol, but an IP layer protocol. Generally, ICMP packets are used by the IP layer

1. ICMP protocol format ICMP packets are transmitted inside the IP datagram: | IP header | ICMP packets | ICMP Message format: Bits 0-7 8-15 16-23 24-310 type code checksum32 rest of Header Type-ICMP type as specified below. Code-subtype to the given type. Checksum-error

I. Origin of ICMPThe best datagram communication service provided by the IP address has no connection service, but it cannot solve the problems of Low-layer datagram loss, duplication, delay or disorder, the TCP Connection Service established on the IP base solves the above problems and cannot solve the problem of network faults or packets that cannot be transmitted due to other network reasons. Therefore, the purpose of the ICMP design is to provide

Author: vamei Source: http://www.cnblogs.com/vamei welcome reprint, please also keep this statement. Thank you! So far, we have explained the most important IP protocol in the network layer (refer to the Protocol forest ). An important supplement to the IP protocol is the ICMP protocol. ICMP protocol ICMP(Internet Control Message Protocol) YesBetween

My previous article "Linux Programming Ping Implementation" in the use of the ICMP protocol to implement the Ping program, ICMP in addition to the implementation of such a ping program, what is not known or fun to use?Here I will introduce another very famous black technology for ICMP: ICMP flood attack.The

Yesterday, a brother who studied network programming was vague about some protocols and concepts in TCP/IP. He wanted me to explain ICMP to him. This is not empty, so I grabbed an ICMP packet and analyzed it for him:(The previous conceptual things are basic and mandatory !) An ICMP packet is contained in an IP address datagram. The IP address header is in front o

ICMP protocolICMP (Internet Control Message, inter-protocol) is an error-control mechanism provided for gateways and target hosts, so that they can report errors to the sender of the message source when they encounter errors.The ICMP protocol is an IP layer protocol, but because error reporting may also go through several subnets when sent to the source of the message, it involves routing problems, so the

ICMP (RFC792) Network Information Analysis directory 1. introduction 22. message format 23. destination inaccessible information 34. timeout information 35. parameter question Message 46. source congestion message 57. redirect Message 68. response Message 79. the timestamp and timestamp respond to message 810. summary of message types 911. references 10 1. this section describes how to use the IP protocol in a system called Catenet as the datagram ser