traceroute

In our study and work, the use of vrouters is everywhere. So how do we configure vro security? Let's take a look at how this article introduces you. In a typical campus network, a router is generally outside the firewall and is responsible for

Brief Introduction to Linux security configuration steps-Linux Enterprise Application-Linux server application information. The following is a detailed description. I. Disk partitioning 1. If the system is newly installed, consider the security of

Transparent firewall (bridge + iptables + squid)-Linux Enterprise Application-Linux server application information. For more information, see the following. Setting up transparent proxy and firewall is a hot topic on the linux platform. There are

I saw the following topic and asked which route was chosen when R4 arrived at R2. At that time, I was not sure. So I designed this topology to prove it and finally proved my conclusion. If the COST of R2. In this topology, there is no difference

Linux Network Bridge operations-Linux Enterprise Application-Linux server application information, the following is a detailed description. I. Settings 1. Obtain ''bridge configuration'' Ftp://shadow.cabi.net/pub/Linux/BRCFG.tgz 2. Obtain and

(The Frame Relay mentioned below is point-to-point, which is different from point-to-point)   When you ping the IP address of a local machine on a computer, the IP address is only sent back to the computer and not to the network. However, the IP

I. disk partition 1. if the system is newly installed, security should be considered for disk partitions: 1) root directory (/), user directory (/home), temporary directory (/tmp) and/var directories should be separated into different disk

Preface The ESTABLISHED State http://waringid.blog.51cto.com/65148/512140 In the iptables firewall connection status was discussed earlier ). In addition to this status, iptables is still in the following status, and I will try again later. The

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

Install Apache on the server first. Download the following software from http://www.nagios.org: nagios-3.2.3.tar.gznagios-plugins-1.4.15.tar.gznrpe-2.12.tar.gz install NagiosCore # Switch to root user su-l # Add na Install Apache on the server first.

IP address: Ipv4 2*32 Ipv6TCP Network Communication ProtocolUDP User Datagram ProtocolCommon network ports:FTP Service file sharingSSH Service secure remote network managementTelnet ServiceSMTP: Simple Mail Transfer ProtocolPOP3: Post Office

Original address: http://drops.wooyun.org/tips/20020x00 Nmap Introduction Nmap (Network Mapper) is a security scanner designed by Gordon Lyon to detect hosts and services on a computer network. In order to draw a network topology diagram, Nmap

Linux network configuration command Nic naming rules in Linux: eth0 and eth1. The first Ethernet Card and the second card. Lo is the loopback interface, its IP address is fixed to 127.0.0.1, And the mask is 8 bits. It represents your machine. 1.

Traceroute uses ICMP and ttl,icmp for Echo information, including ip,ttl,sequence number, and so on. The TTL field is the initial set field of the sender, the RFC specifies a value of 64, for each router that processes the packet needs to reduce the

4th Chapter ARP: Address Resolution Protocol1. Background: When a host sends an Ethernet data frame to another host on the same LAN, the destination interface is determined based on the Ethernet address of the bit. The device driver never checks the

In UnixLinux, the most efficient technique is not to operate the graphic interface, but to operate on the command line, because the command line means automation. In bash, you can use Ctrl-R instead of the upper/lower cursor key to search for

I. background: in the big data era, who owns data can have a future. many Internet companies do not generate data themselves. what should they do? Capture data and capture data, so a considerable portion of the current huge network traffic is

Article Title: helps you build a Secure Linux platform. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Author:

Wireshark is a very useful packet capture tool. When we encounter network-related problems, we can use this tool for analysis. However, it should be noted that this is just a tool, the usage is very flexible, so the content described today may not

From http://memo.cnticketing.com/uchome/space.php? Uid = 2 & Do = Blog & id = 6      RedHat Linux host name modification (hostname) Hostname # view the Host Name of the current host Hostname newhostname # Temporarily modify the current host