python network traffic monitor

Socketserver Create a Network service framework. It defines classes to handle synchronous network requests on TCP,UDP, UNIX streams, and UNIX datagrams. First, Server Types There are five different server classes in Socketserver. 1.BaseServer defines the API, and he is not used for instantiation and direct use.The 2.TCPServer is used as the socket communication for TCP/IP.3.UDPServer use datagram sockets.

objects, once a handle has changed +R_list,w_list,e_list = Select.select (inputs,outputs,inputs,1) - Print(' Listening socket object%d '% len (inputs)) + Print(r_list) AFor Sk1_or_conn in R_list: at#每一个连接对象 - ifSk1_or_conn = = Sk1: -#表示有新用户来连接 -Conn, address = Sk1_or_conn.accept () -Inputs.append (conn) - Else: in#有老用户发消息了 -Try toData_bytes = SK1_OR_CONN.RECV (1024) +Except Exception as ex: -#如果用户中断连接 theInputs.remove (Sk1_or_conn) * Else: $#用户正常发消息Panax Noto

This script is to monitor whether the host is alive in a network segment, whether Port 22 is on, and whether the SSH login can be successfully logged through a unified user name and password, and the host IP that could be logged in is logged to the file.Shortcomings is that I do not know whether to test SSH login, there is a ping address is really slow, but fortunately there is time to write a multi-threade

We usually use on the computer program such as: Thunder, WORD,QQ, Firefox, etc., these unified called application software, Python development is also the main development of this application software.If QQ this application wants to run, we must first download QQ installs the software, then installs on the operating system,But the operating system is also software, but it is a system software, software to allow must be on the hardware, that is, must h