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.
NSLookup
-Qt = mx
Email server IP address or domain name
The domain name or IP address of the specified DNS server.
Usage:Query IP addresses
The simplest use of NSLookup is to query the IP address corresponding to the domain name, including the
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,
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
Nslookup is a command-line tool that monitors whether DNS servers in the network can correctly implement domain name resolution. It is available in Windows nt/2000/xp.
This article is mainly for the mailbox MX records and related query methods to do
After DNS compilation is complete, the system prompts "XNDOMAIN -- Linux Enterprise Application-Linux server application" during nslookup. The following is a detailed description. Attaches all the compilation content, and red indicates the modified
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
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
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,
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
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