Cryptography Reference
In-Depth Information
;; ANSWER SECTION:
www.ietf.org. 433 IN A 64.170.98.32
;; Query time: 19 msec
;; SERVER: 209.18.47.61#53(209.18.47.61)
;; WHEN: Mon Sep 20 21:08:21 2010
;; MSG SIZE rcvd: 46
This tells you that the IP address for
www.ietf.org
is
64.170.98.32
. You can
also view signature information for this domain name:
debian:ssl$ dig @209.18.47.61 www.ietf.org +dnssec
; <<>> DiG 9.3.4 <<>> @209.18.47.61 www.ietf.org +dnssec
; (1 server found)
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63769
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;www.ietf.org. IN A
;; ANSWER SECTION:
www.ietf.org. 1649 IN A 64.170.98.32
www.ietf.org. 1649 IN RRSIG A 5 3 1800
20110831142441 20100831132624 40452 ietf.org.
mukwwlQll9RPzlKkWKgI2TnOka17jFrkgtavMEITvU5r4xTAhbZxXA3K
mKAoK+d0OA0XiJC0u2GtsobAVtWVcrdqaeez1lw/TppW+otIj43ZzJ6e
iKpytRJdFmJOS409mNLZaYjUgm6i154clMgmatOisLhX79snqQu18jG2
sRZE4faPmKw9kw9FNtOC8QuTCOGecTsmycuYpNbTxCSyD0Z4M1behKb9
rRzk1spXTBo6j2mn9vb8NYqY+Xa9JjLOe2Xw8bLGoQrdcB0+hBOBf4Od
+bdgMKMIE1scO9QFqQvTD345v1u2FygXFe0UgE1l6KDz+ZA4prkvzbfo yPy53w==
;; Query time: 15 msec
;; SERVER: 209.18.47.61#53(209.18.47.61)
;; WHEN: Mon Sep 20 21:05:31 2010
;; MSG SIZE rcvd: 353
RFC 4034 details the format of this signature record, the
RRSIG
record type. Of
course, a signature is useless without a corresponding public key with which to
validate it. The public key is held by the next higher level's authoritative name
server:
debian:ssl$ dig ietf.org dnskey
;; Truncated, retrying in TCP mode.
debian:ssl$ dig ietf.org dnskey +dnssec
; <<>> DiG 9.3.4 <<>> ietf.org dnskey +dnssec
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