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Description: 几个扫描器的代码 里面有单线程的tcp扫描器和多线程的tcp扫描器!还有syn的扫描器代码!!一次满足你三个愿望!! 极好学习的代码!-Some scanners have the code inside the single-threaded tcp scanner and multi-threaded tcp scanner! Also syn code scanner!! Time to meet you three wishes!! An excellent source of learning!
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Size: 67584 |
Author: 张希行 |
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Description: 信号定时同步，基于经典的最大似然准则基础上，提出新的方法，很值得看的文章！-Time Synchronization
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Size: 243712 |
Author: 王哥 |
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Description: classic gardner time syn algorithm,which usually used in digital communcation
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Size: 1024 |
Author: joe |
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Description: SYN 端口扫描，简单的实现洪水攻击-SYN SCan performance DoS attack detection and prevention tools. It can monitor ip on the Ethernet protocol data flow analysis of whether DoS attacks, When it is discovered that the DoS attacks, dnsguard automatically switches to F5 issued a directive deletion of the attacker connectivity, and over a period of time against his visit. Dnsguard effective prevention of DoS attacks on the harm caused servers to ensure the normal operation of t
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Size: 3462144 |
Author: 宋亚非 |
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Description: Time syn protocol wsn simulation
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Size: 1394688 |
Author: Thang |
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Description: 自己写的C# DOSS攻击实例 通过tcp 协议是3次握手的方式连接的，第一次客户机向服务器发送一个标志为syn的数据包，这个数据包的tcp部分有个16位随即序列号，而且ip部分和tcp部 分各有一个校验码，发送出去只有校验码正确才会视为合法的数据包，然后如果那个机器那个端口有服务器，比如http服务，就会把序列号+1，然后再生成一 个16位随机序列号，标志syn+ack的数据包返回，服务器就会占着一个信道等待第三次握手了，如果超过预定时间等不到就超时去掉了，这时如果开始那个 syn的源ip地址和源端口是伪造的并大量发送，服务器就会大量的向假ip端口返回syn+ack并等待，这样就大量占着信道了，如果超过了连接限制，别 的机器就连不上了，就拒绝服务了。原理大体就是这个样子了。-Write your own C# DOSS attack instance handshake connection through tcp protocol, the first time the client sends to the server a flag for the syn packet, this packet tcp part of a 16 then the serial number, and ip part and tcp part one on each check code sent only correct checksum will be regarded as the legitimate packets, and then if that machine that port server, such as http service serial number will+1, then regenerated into a 16-bit random serial number, logo syn+ack packet returns, the server will occupy a channel exceeds a predetermined time less than a timeout to remove the wait for the third handshake, then if you start the syn source ip address and the source port and send a large number of forged server will be a lot of to fake ip port to return syn+ack and waiting for, so that a large number of occupied channel, if the connection limit is exceeded, the other machines on the crawl denial of service. Principle roughly like this.
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Size: 7168 |
Author: mjr |
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Description: C#编写的时间同步工具。 C#编写的时间同步工具。-syn time use sntp protocol
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Size: 40960 |
Author: 111111 |
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Description: 网络时间协议，用于同步网络中计算机的时间-network time protocol,use for syn computer times
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Size: 371712 |
Author: kevinnan |
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Description: 分别采用了TCP connect扫描和TCP SYN两种扫描方式。而且对于TCP connect扫描方式又分别通过CSocket类和Socket2编写了程序代码。从实际的测试效果来看，CSocket类和Socket2两种实现方式由于只是采用的编程类库不一样，而编程原理一样，所以效果也基本一样。而TCP SYN扫描则由于采用了非常规的扫描方式，特别是近几年防火墙的快速发展，几乎所有的防火墙都对这种方式进行防范，因此，扫描效果要视具体情况而定。同时，TCP SYN扫描方式必须运行于管理员组成员的模式下。-
We were used to scan and TCP SYN TCP connect two scanning methods. And for TCP connect scanning and Socket2 they were written by the CSocket class code. From a practical point of view the test results, CSocket class and Socket2 two ways since only use programming libraries are not the same, but the same principle programming, so the effect is basically the same. The TCP SYN scan is a result of the scanning unconventional way, especially in recent years, rapid development of firewall, almost all of the firewalls to prevent this manner, therefore, scan results depending on the specific circumstances. At the same time, TCP SYN scanning mode must run under the Administrators group members.
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Size: 6075392 |
Author: 张彬彬 |
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Description: IPC 内存共享，实现多个进程间通讯,同时包含进程同步，本例程包含读写两个进程，测试通过-The IPC memory sharing, communicating between multiple processes, contain process synchronization at the same time, read and write this routine includes two processes, the test pass
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Size: 41984 |
Author: 张毅 |
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Description: 假设截获了一段短波数字通信的信号，要求解调出最终的信息，每组解调出来后，将10组信息组合起来，恢复最终的信源输出数据。
先验信息：两组数据文件，编号为1、2，每组I、Q两路存放，格式为“int16”，采样率为9600Sa/s，其中第一组为单径情况，第二组为多径情况。
参数符合MIL-STD-188-110A标准；
同步序列为syn=seq.dat，BPSK调制；
接收机频率稳定度高于1e-6。
文件中有效信息总长度为333.75s，其中同步头长为5/12s，每时隙1/6s，训练序列占10 ，在数据之前；
交织方式为全交织，矩阵交织，列为1000，在比特级进行；
纠错码码率为1/2；
调制方式为BPSK、QPSK和8PSK中的一种，映射方式为二进制，BPSK相位偏移为0，其余两种为 。
-Suppose intercepted signal for a period of short-wave digital communications requires final demodulated information after each demodulated, combining 10 group information, to restore the final output data source.
Priori information: two sets of data file, numbered 1, 2, each I, Q two-way storage, the format is int16 , sampling rate 9600Sa/s, where the first group is a single path, the second group multipath situation.
Parameters meet MIL-STD-188-110A standard
Synchronization sequence syn = seq.dat, BPSK modulation
The frequency stability of the receiver is higher than 1e-6.
File payload total length of 333.75s, wherein the synchronization header length is 5/12s, each time slot 1/6s, accounting for 10 of the training sequence, before the data
Interleaving for the whole interleaving matrix interleaving, as 1000, carried out at the bit level
Error correction code rate of 1/2
The modulation scheme is BPSK, QPSK and 8PSK one, a binary mapping, the BPSK phase offset is 0, the
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Size: 4096 |
Author: suxiaogua |
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Description: 位同步算法，提高信噪比，缩短估计时间,后面的说明都是凑字数(bit syn algothrm ,to enhance SNR,shorten calculate time,and rest is to add words.)
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Size: 240640 |
Author: Osborn
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