dig/host/nslookup

사용 시스템 : Centos 5.5 (final)

Name Service Look up CMD

ⓐ nslookup CMD -> # nslookup www.daum.net

ⓑ host CMD -> # host www.daum.net

NAME

dig - DNS lookup utility

SYNOPSIS

dig [@server] [-b address] [-c class] [-f filename] [-k filename] [-m] [-p port#]

[-t type] [-x addr] [-y name:key] [-4] [-6] [name] [type] [class] [queryopt...]

dig [-h]

dig [global-queryopt...] [query...]

DESCRIPTION

dig (domain information groper)

SIMPLE USAGE

A typical invocation of dig looks like:

dig @server name type

server is the name or IP address of the name server to query. This can be an IPv4

address in dotted-decimal notation or an IPv6 address in colon-delimited

notation. When the supplied server argument is a hostname, dig resolves that

name before querying that name server. If no server argument is provided,

dig consults /etc/resolv.conf and queries the name servers listed there. The

reply from the name server that responds is displayed.

name is the name of the resource record that is to be looked up.

type indicates what type of query is required — ANY, A, MX, SIG, etc. type can

be any valid query type. If no type argument is supplied, dig will perform a

lookup for an A record.

Example - dig 명령어

# dig @168.126.63.1 kornet.net ANY

# dig @168.126.63.1 example.com ANY

# dig @168.126.63.1 google.com ANY

# dig @168.126.63.1 kornet.net MX /* kornet.net. NS ns.kornet.net */

# dig @168.126.63.1 kornet.net NS /* kornet.net. NS ns.kornet.net */

# dig @168.126.63.1 www.kornet.net A /* www. kornet.net A 211.216.50.150 */

# dig @168.126.63.1 211.216.50.150 PTR /* 150 PTR ns.kornet.net */

# dig @168.126.63.1 version.bind chaos txt /* version.bind txt "hello" */

# dig www.google.com -> 이것이 가장 일반적인 방법. 정보 상으로는 가장 자세하게 볼 수 있다.

nslookup 명령어는 어떤 운영체제나 상관없이 들어있다. -> 공통적.

보안 공부