2009 Itc Nslookup Rev01

NEA-SEA ITC 2009 NSLOOKUP March 2009 ITC Jay Hall

Quick DNS Record Type Review ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Quick DNS Record Type Review ,[object Object],[object Object],[object Object],[object Object]

What is nslookup? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Using nslookup ,[object Object],[object Object],[object Object],[object Object],[object Object]

nslookup commands ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

nslookup commands ,[object Object],[object Object],[object Object],[object Object],[object Object]

nslookup examples jhall@jefmhallja-~$ nslookup > set type=mx > server 10.129.10.41 Default server: 10.129.10.41Address: 10.129.10.41#53 > server mo-hq-s1.mo.loc Default server: mo-hq-s1.mo.loc Address: 10.129.10.41#53 > mnea.org Server: mo-hq-s1.mo.loc Address: 10.129.10.41#53 mnea.org mail exchanger = 20 mail2.mnea.org. mnea.org mail exchanger = 10 mo-hq-s1.mo.loc. >

nslookup examples ,[object Object],[object Object],[object Object],[object Object],[object Object]

nslookup examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

nslookup examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is Dig? ,[object Object],[object Object],[object Object],[object Object]

Dig Commands and Examples ,[object Object],[object Object],[object Object],[object Object],[object Object]

Dig Commands and Examples ;; QUESTION SECTION: ;mnea.org. IN A ;; ANSWER SECTION: mnea.org. 900 IN A 65.117.48.158 ;; AUTHORITY SECTION: mnea.org. 900 IN NS dca-ans-01.inet.qwest.net. mnea.org. 900 IN NS svl-ans-01.inet.qwest.net. ;; ADDITIONAL SECTION: dca-ans-01.inet.qwest.net. 3600 IN A 205.171.9.242 svl-ans-01.inet.qwest.net. 3600 IN A 205.171.14.195 ;; Query time: 107 msec ;; SERVER: 205.171.9.242#53(205.171.9.242)‏ ;; WHEN: Wed Feb 25 05:34:06 2009 ;; MSG SIZE rcvd: 138

Dig Commands and Examples ;; QUESTION SECTION: ;mnea.org. IN MX ;; ANSWER SECTION: mnea.org. 900 IN MX 5 mail.mnea.org. ;; AUTHORITY SECTION: mnea.org. 900 IN NS dca-ans-01.inet.qwest.net. mnea.org. 900 IN NS svl-ans-01.inet.qwest.net. ;; ADDITIONAL SECTION: mail.mnea.org. 900 IN A 65.117.48.157 dca-ans-01.inet.qwest.net. 3600 IN A 205.171.9.242 svl-ans-01.inet.qwest.net. 3600 IN A 205.171.14.195 ;; Query time: 97 msec ;; SERVER: 205.171.9.242#53(205.171.9.242)‏ ;; WHEN: Wed Feb 25 05:49:26 2009 ;; MSG SIZE rcvd: 159

Why are DNS tools useful? ,[object Object],[object Object],[object Object],[object Object]

A better way? ,[object Object],[object Object],[object Object],[object Object]

2009 Itc Nslookup Rev01

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2009 Itc Nslookup Rev01