port replicator

Some people often ask me whether port aggregation refers to link aggregation or VLAN trunking? Why did the teacher tell them all about this name? Is it wrong with the teacher or in the book. After studying the Internet for so long, I have been using these two words in practice. In fact, this is not the same thing. I checked the definition on Baidu: Link AggregationIs to combine two or more data channels into a single channel, the channel appears in a

Sharing of multi-thread port scanning tools implemented by Python and python port scanning It was written two nights last night and finally the Py Port Scanner was finished. Let's call it version 0.1 as a Python multi-thread Port scanning tool. The level is limited. To tell the truth, there are some puzzles and puzzles

What is port mapping? Port mapping is also called Port forwarding, and some are called NAT, virtual server. Port mapping process just like your home in a Community B building room 2410, your friends to find you, to find the community doorway, do not know where you live which number? asked the gatekeeper security, the

1. Allow packet forwarding: #echo 1 >/proc/sys/net/ipv4/ip_forward 2. Forward TCP 8081 to xx.xx.xx.xx: #iptables-T nat-i prerouting-p TCP-–dport 8081-j dnat–-to xx.xx.xx.xx 3. Enable the forward packet to implement a "bidirectional path" to set a correct return channel for the packet: #iptables-T nat-i postrouting-p TCP-–dport 8081-j Masquerade 4. Means to save the rule to the/etc/sysconfig/iptables file #service iptables Save 5. Restart Iptables to make the rules you just added take effect #ser

Wireshark analyzes non-standard port traffic and wireshark PortWireshark analysis of non-standard port traffic 2.2.2 analysis of non-standard port traffic Wireshark analysis of non-standard port traffic Non-standard port numbers are always the most common concern of network

It is very convenient to install ftp on a Linux server to provide users with upload and download. However, if your server has enabled the iptables firewall, you need to set the ftp port. I have also used iptables to allow access from a port. why do I need to demonstrate the ftp port? Because the ftp port is really spec

This time, say "ports" and "Port numbers".Usually hear people say "open port 80th", in order to secure "do not open redundant ports" and so on. So, what are the ports or port numbers here?First, the "port" is a concept used on TCP or UDP and is often likened to "windows". Also, the

Commax serial port ing master Keywords: serial port to TCP serial port to udp tcp to serial port UDP to serial port Commax is a professional tool for RS232 ing RS232/422/485 serial port data and network data. It can work indep

C # serial port control, c # Serial Port The serial port is the standard interface of a computer. Currently, a PC (Personal Computer) usually has at least two serial port COM1 and COM2. Serial interfaces are widely used in data communication, computer networks, and distributed industrial control systems. Serial Communi

Port speed limit: Refers to the rate at which the port is throttled to a speed limit value. Port Flow control: On the basis of the port speed limit, if the port has the flow control function, you can control the packet rate to the speed limit value. Example:

Linux port ing tool RINETD and port rining rinetd Rinetd, a simple and easy-to-use tool in Linux, implements port ing, forwarding, and redirection.Official Website address http://www.boutell.com/rinetd Software DownloadWget http://www.boutell.com/rinetd/http/rinetd.tar.gz Unzip and installTar zxvf rinetd.tar.gzMakeMake install Edit ConfigurationVi/etc/rinetd. con

Port mappings are also called port forwarding, virtual servers, and different broadband routers are named differently. A computer in the intranet needs port mapping to be on the Internet to open up services or receive data. Port mappings are divided into dynamic and static. Dynamic

Label: style blog HTTP color ar strong SP 2014 ArtDuring serial port testing, the serial port is used to unplug the printer and replace it with the test. When the program is opened, an error is prompted: the given port name does not start with COM/COM or does not resolve to a valid serial port. (The given

Port Address binding: [port-based MAC Address binding]There are two ways to bind a MAC address to a network device: Port-based MAC Address binding and IP address-based MAC Address binding, the port, MAC address, and IP address are bound at the same time ). The former is mainly configured on the vswitch, and the latter

Objective In Network technology, ports (port) generally have two meanings: first, the physical port, for example, ADSL Modem, hubs, switches, routers to connect other network devices, such as RJ-45 Port, SC port and so on. The second is the logical port, generally refers to

Example of a ping port function implemented by PHP, phpping Port instance This article describes the ping port function implemented by PHP. Share to everyone for your reference. The specific implementation code is as follows: Copy CodeThe code is as follows:/** @author Xujiajay* @date 2010-10-7* @function PHP functions that can ping ports**/Error_reporting (E_er

View port status (python) and Port Status pythonView port status (python) by Wu xueying# Coding: UTF-8ImportsocketImportthreadingImporttimeClassSkPort (threading. Thread ):Def _ init _ (self, ip, port ):Threading. Thread. _ init _ (self)Self. ip = ipSelf. port = portDef run

CentOS is really troublesome to modify the SSH Port (Port) CentOS, or because there are too many security considerations and too many context issues need to be considered. Similar problems have been encountered in samba before, just like SSH. List the key modification steps, and study the context tag later (your own translation has not been taken into consideration... CentOS is really "troublesome" to modif

View port To view the port in Windows 2000/XP/Server 2003, run the Netstat command: Click Start> Run, type cmd, and press enter to open the Command Prompt window. Type "netstat-a-n" in the command prompt. Press the Enter key to view the TCP and UDP connection port numbers and statuses displayed in numbers. TIPS: Netstat command usage Command Format: Netstat-a-e-n

Virtual serial port-note, serial port-Note Virtual serial port is occupied, software available Serial Port Limited COM1-COM4, how to release and delete the occupied serial port A: You can delete A numeric entry in the Registry to clear these configurations: Enter regedit in