openflow port

0. PrefaceNC is a good tool for both ends of the network connection, but also a temporary port forwarding. (What is the permanent port forwarding?) With Iptables)SSH is also a good tool in this area, the advantage is that encryption is reliable reusable at one end of the operation, at the cost of having a login account.We know that SSH automatically encrypts and decrypts all network data between the SSH cli

TTY Driver Architecture:1. TTY Concept Analysis1.1/dev/ttysca01.2/dev/tty1-n1.3/dev/consoleIn a Linux system, a terminal is a type of character device, which consists of many types, usually using a TTY for short-range end devices.. Serial Terminal (/dev/ttys*)The serial port terminal is the end device which uses the computer serial port connection. Linux considers each serial

Modify the ssh port and centosssh port of centosVi/etc/ssh/sshd_configFind the section # Port 22, which indicates that Port 22 is used by default, and add a line as follows:Port 34981 Save and exit Then the service sshd restart Note: Do not turn it off here. In addition, open a new window and try to connect to sshd. If

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

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

As we all know, the vswitch ports are both layer-2 interfaces, and these interfaces are connected to physical ports. In a Vlan, these interfaces can be divided into access interfaces and relay ports. If the port of a vswitch uses an access port, it can only belong to a specific Vlan. If the port of a vswitch uses a relay port