Background:With the information office becoming more and more popular, people's office relies on the Internet more and more, it, the network in the enterprise's influence is more and more big. Therefore, the reliability of the enterprise network
First Xie Mu class net/*** Linux System scanning technology ** Host scan, route scan, batch service scan, system security Policy (anti-SYN and DDoS attack) *//*** Host Scan* Ping fping hping ** fping* Fping Installation* Download:* (mkdir/services &&
In addition to the previous article "Linux Common Network Tools: Route scanning traceroute" introduced in the Traceroute, General Linux also built-in another common route scanning Tool mtr.The MTR is better used in some ways than traceroute, and it
3. Linux Network commands
3. Linux Network Command 3.1 network Environment View command①ifconfig CommandifconfigCommand: View and configure network status commandsHowever, you can only view IP addresses and subnet masks using the
The ping command is used to test the connectivity of the network between hosts. Ping (Options)-D: Using the socket's so_debug function;Number of-c;-F: limit detection;-i-i-l-N: Outputs only values;-p-Q: Does not show the instruction execution
The port can be divided into 3 main categories:
1) Accepted ports (well known Ports): from 0 to 1023, they are tightly bound to some services. Usually the communication of these ports clearly indicates the protocol of some kind of service. For
5.1 Common network commands
With network-related tools available in the Red Hat Linux 7.1 system, it is essential that these tools be well mastered:
Category one: Setting tools
1.netconf:
Netconf is part of the linuxconf provided by Red Hat Linux
Ethernet Connection
In Linux, the Ethernet interface is named: eth0,eth1, 0, 1 for network card number
The LSPCI command allows you to view the hardware information for your network card (if you are a USB card, you may need to use the LSUSB
Brief introduction
Cisco Fabric Manager is a web-based, easy-to-use, responsive application that enables switch and network management in an integrated way, simplifying the management of the Cisco MDS 9000 series switches in the storage Area
Production environment highly recommended installation deploymentIntroductionOswatcher (OSWBB) is a collection of UNIX shells scripts intended to collect and archive operating system and network Metri CS to aid support in diagnosing performance
Briefly describe the problem: as the company's servers more and more, personnel mobility is also beginning to grow, the old Management Server should abandon the idea, the company needs to have a better and more perfect authority system, after many
I. Commands for setting network parametersIfconfig: Query, set network card and IP network and other related parameters[[email protected] ~]# ifconfig {interface} {down|up}[[email protected] ~]# ifconfig interface
1. Network Basics
Network addressing
IP Addressing
Subnet mask
Communication--mac address between the same network host
Communication between different networks
Routing
Domain name
Dns
Basic
In a typical campus network, a router is generally outside the firewall and is responsible for connecting to the Internet. In fact, this topology exposes the router to the campus network security defense line. If the router itself does not adopt an
Read Catalogue
Factors of delay
Speed delay
Bandwidth delay
Last kilometer delay-tracerouter
Goal
Settings for Rwnd
Slow boot process
Impact of Slow start
Slow start a calculation of the HTTP impact
Linux users need to understand the command line 1, basic command 1, understand the basic bash: Read the entire bashmanpage.2, learn VIM: on Linux systems, although you have Emacs and Eclipse, but VIM is still a powerful tool. 3. understand SSH and
NagiosThe installation is relatively simple, and the complex is the setting of settings and configuration parameters. But you need to relax. After all, we need to fix it, right? Let's get started:
1: Get the latest installation
The ping command is used to send Internet Control Message Protocol (ICMP) packets from one host to another. Ping sends data packets using the icmp echo-REQUEST command, and expects an icmp echo-REQUEST "ping" for each transmitted data packet. The
Bgp mpls/VPN Network Technology BGP protocol has been well known for a long time. Its powerful routing policy tool capabilities and its storage and routing performance go beyond any internal gateway protocol of the image model, therefore, it exists
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