nslookup output

Recently, my colleague reported that during the NSLookup test on the Intranet, I found that when I used the Intranet DNS server 192.168.1.1 for resolution, the DNS server responded very quickly and did not Any errors. However, when the DMZ server 51.

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

I. Host directiveFormat: Host [-A] FQDN [server]HOST-L domain [Server]Options:-A: Represents a list of all relevant information about the host, including IP, TTL, and error-removing messages, etc.-L: If the next domain setting allows Allow-transfer,

Description: The NSLookup command is a program that queries the Internet Domain Name Service. The NSLookup command has two modes: Interactive and non-interactive. Interactive Mode allows users to query different types of hosts and domain names

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

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,

  Query IP addresses NSLookupThe simplest method is to query the IP address corresponding to the domain name, including the record, MX record, and NS record cname record. Query a records:NSLookupDomain Name Query MX records:NSLookup-Q = Mx

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

Because the Linux system originated and developed on the Internet, it is born with powerful network functions and rich network application software, in particular, the implementation of TCP/IP network protocols is particularly mature. Linux has many