nslookup port number

1 DNS IntroductionDNS (domain Name System) can provide valuable data during the detection process, the basic function of DNS is to convert the domain name to an IP address. (If you don't know much about DNS, it's going to take a lot of effort!) Now

Common Linux commands: nslookup, lsmd5sum, uname, and history1. nslookup DNS developers all know what the nslookup (name server lookup: domain name query) command is for. It comes with windows. However, in Linux, enter nslookup to display the

1. install the software packages dig and nslookup. Centos: # yuminstallbind-utilsDebian: # apt-getupdate # apt-getinstalldnsutils set the dns server IP address in/etc/resolv. conf before querying. II. usage 1. install the software packageInstall

Some commands for configuring the DNS server and nslookup in Linux-Linux Enterprise Application-Linux server application information. The following is a detailed description. There are two email servers: 192.168.1.1 (B .test.cn in windows) and 192.16

Http://www.computerhope.com/unix/unslooku.htmAbout NslookupThe nslookup command is used to query Internet name servers interactively for information.Overviewnslookup, which stands for "name Server Lookup", was a useful tool for finding out

tcpdump Grab Bag: want to output dot decimal: tcpdump-n * * *Want to output MAC address: TCPDUMP-E * * *Catch target a package: tcpdump DST A//requires root permission, or sudo. The contents of the network package, including the source IP address,

Passive Information collectionFeatures:Based on open channelNo direct contact with the targetAvoid leaving all traces.Standard Reference--osint:U.S. militaryNorth Atlantic Treaty Organization noun explanationdns--domain Name System domain Name

Netstat Command Overview:Netstat is a very useful tool for monitoring TCP/IP networks, which can display routing tables, actual TCP network connections, TCP and UDP snooping, process memory management, and status information for each network

Linux iptable firewall block and open ports Source: http://hi.baidu.com/zplllm/item/f910cb26b621db57c38d5983 Evaluation: 1, close all the INPUT FORWARD OUTPUT only to some ports open. Here is the command implementation: Iptables-p INPUT

Brief introductionVirtual host refers to a certain amount of disk space on the network server, the administrator can take advantage of this part of the space, put the site and application components, provide the necessary data storage and