ip packet sniffer

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IP packet filtering

/* Use the APIS provided by the operating system to write a firewall. The Program For API descriptions, visit the Microsoft msdn library. Code Compiled in C ++ Builder 5 If you want to communicate with me, please email: zzwinner@163.com */ # Pragma hdrstop# Include "windows. H"# Include "fltdefs. H"// You need to load "iphlpapi. lib" # Pragma argsusedInt main (INT argc, char * argv []){// An interface for filtering network packetsInterface_handle hinterface;Pfcreateinterface (0,Pf_actio

IP/TCP packet headers and corresponding structural bodies

format of the head, and then look at the structure of the head in the library file definition struct IPHDR { #if __byte_order = = __little_endian unsigned int ihl:4; The length of the header unsigned int version:4; Protocol version number, 4/6, represents Ipv4/ipv6 #elif __byte_order = = __big_endian unsigned int version:4; unsigned int ihl:4; #endif u_int8_t tos; Type of service field u_int16_t Tot_len; The total length of the

IP packet filtering

/* Use the APIS provided by the operating system to write a firewall. For more information about the APIS involved in this program, visit the Microsoft msdn library. The code is compiled in C ++ Builder 5 If you want to communicate with me, please email: zzwinner@163.com */ # Pragma hdrstop# Include "windows. H"# Include "fltdefs. H"// You need to load "iphlpapi. lib" # Pragma argsusedInt main (INT argc, char * argv []){// An interface for filtering network packetsInterface_handle hinterface;Pf

MTU-TCP/IP protocol stack-linux kernel-tcp packet loss retransmission-UDP high performance-ai-

http://view.inews.qq.com/a/20161025A0766200QQ in narrowband eraQQ is a narrow band of the most representative of the product, in that network transmission efficiency is lower than the era, we still remember Google's homepage? Why is the simple page of Google so concise?Google was born in 1998, is also in the narrow-band era, you will find its home byte size is less than 1024, why less than 1024 bytes, because the Ethernet MTU (that is, the largest transmission unit) is 1024,google in order to le

Cisco Packet Tracer Input IP and other information mouse cursor jumps

Problem Description:Cisco Packet Tracer software configures switches in the CLI, routers enter information with IP type when entering "." The input character jumps to the first bit of the string or "." The front of the character.Terminal (PC, notebook, tablet) device in command prompt debug with IP type information the cursor will also jump.Workaround:Switch inpu

How to force a packet of a certain size to ping an IP address?

Run the following command to test MTU: Ping-F-l9000 10.110.68.40 The Ping Command output is as follows: C: \ Users \ Administrator> Ping /? Usage: Ping [-T] [-A] [-N count] [-l size] [-F] [-I TTL] [-V TOS][-R count] [-s count] [[-J host-list] | [-K host-list][-W timeout] [-R] [-s srcaddr] [-4] [-6] target_name Options:-T ping the specified host until stopped.To see statistics and continue-type control-break;To stop-type control-C.-A resolve addresses to hostn

Aliyun How to modify a shared bandwidth packet-increase public network IP

  Modify shared bandwidth packets-Increase the public network IP Describe Increase the public network IP in the specified shared bandwidth packet Request parameters name type must describe action string system specified parameters, values: Addbandwidthpackageips regionid string

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