The nslookup command can be used to query DNS records for a domain. Check this post to know how to use dig command. The following command is used to query the A record for. This will return a list of all of the domains that are hosted on the given IP address.īy default, dig sends the DNS query to name servers listed in the resolver(/etc/nf) unless it is asked to query a specific name server. If you want to see the reverse DNS record for a domain, you can type “dig -x ”. This will return a list of all of the MX records for the domain. To use it, type “dig ”.įor example, to query the MX records for a domain, you would type “dig MX”. Query DNS record on Linuxĭig is a powerful DNS query tool that can be used to perform a variety of different queries. We can capture packets on this port to get the DNS query info. On the client-side, the frequently used port for DNS port is UDP 53. A domain name and its matching IP address is called A DNS record.ĭNS service uses both TCP and UDP port 53. We can use tcpdump to filter DNS packets to learn more about how DNS works.ĭNS or Domain Name System basically translates those domain names into IP addresses and points our device in the right direction. It is a database that links meaningful names to a specific IP address. Tcpdump is a very powerful Linux command to capture DNS packets.
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