2010/05/29
2010/05/27
2010/05/25
IPv6 Sage T-Shirt
Nice to learn that Hurricane Electric is giving out T-Shirt for those attained the Sage level. When I need to do is to log in, and in the account setup, click the request T-Shirt button and validate the postal address. Upon completion, extra 100 score points will be added so my score is 1500.
The T-Shirt and the extra 100 score are nice gifts. Thanks to Hurricane Electric.
The T-Shirt and the extra 100 score are nice gifts. Thanks to Hurricane Electric.
2010/05/23
My dog, Mark Chai passed away yesterday
My dog (Mark Chai) passed away yesterday after staying with my family for 16 years (6 Dec 1993 -22 May 2010). Things change now. A family of four becomes a family of three.
Looking back, I hate myself for not treating my dog much better. I should have bought more tasty snack for him to eat. I should have spared more time to take the dog for a longer walk in the park. I should not have punished him for occasionally pissing on the floor and making the house a mess. I should have paid more attention to his deteriorating body condition. I promised I will certainly be good to him if God can bring him back to life.
Dogs are our best companion. We only need to give them food, water and shelter and then they will be loyal to us for the rest of their life.
Looking back, I hate myself for not treating my dog much better. I should have bought more tasty snack for him to eat. I should have spared more time to take the dog for a longer walk in the park. I should not have punished him for occasionally pissing on the floor and making the house a mess. I should have paid more attention to his deteriorating body condition. I promised I will certainly be good to him if God can bring him back to life.
Dogs are our best companion. We only need to give them food, water and shelter and then they will be loyal to us for the rest of their life.
2010/05/22
2010/05/15
2010/05/14
林彬之死
林彬之死，鐵證如山，不容抵賴，是民建聯前身及工聯會所幹的醜事，且看中共喉舌《大公報》的標題:
可恨特區政府還不知羞恥，頒大紫荊勳章給楊光 - 當年工聯會的領袖及左派67年暴動的策劃者，真的對當年所有死難者不敬。
可恨特區政府還不知羞恥，頒大紫荊勳章給楊光 - 當年工聯會的領袖及左派67年暴動的策劃者，真的對當年所有死難者不敬。
2010/05/12
GFW poisons DNS resolution
I have heard about GFW purposely poison DNS information but as I am in Hong Kong, I have no way of testing this scenario. Thanks to websitepulse which offers a facility for testing accessibility to websites behind China GFW. The URL is at:
http://www.websitepulse.com/help/testtools.china-test.html
My test on access to www.twitter.com is dumped in the picture below. The fake return IP address is 37.61.54.158. Actually 37.0.0.0/8 Class A range is not assigned yet so there is no route to this IP address.
http://www.websitepulse.com/help/testtools.china-test.html
My test on access to www.twitter.com is dumped in the picture below. The fake return IP address is 37.61.54.158. Actually 37.0.0.0/8 Class A range is not assigned yet so there is no route to this IP address.
2010/05/10
Root Zone Public Keys
Some network administrators are eager to see what the root zone public keys look like which were issued on 5 May. In fact, ICANN has issued the warning inside the key strings that "This is an invalid key and should not be used contact rootsign@icann.org for more information". See my dump below:
***** Root Zone Public Keys *****
[localhost]# dig +dnssec dnskey . @192.5.5.241
; <<>> DiG 9.5.2-RedHat-9.5.2-1.fc10 <<>> +dnssec dnskey . @192.5.5.241
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47371
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;. IN DNSKEY
;; ANSWER SECTION:
. 86400 IN DNSKEY 257 3 8 AwEAAawBe++++++++++++++++THIS/IS/AN/INVALID/KEY/AND/SHOU LD/NOT/BE/USED/CONTACT/ROOTSIGN/AT/ICANN/DOT/ORG/FOR/MOR E/INFORMATION+++8=
. 86400 IN DNSKEY 257 3 8 AwEAAazdM++++++++++++++++THIS/IS/AN/INVALID/KEY/AND/SHOU LD/NOT/BE/USED/CONTACT/ROOTSIGN/AT/ICANN/DOT/ORG/FOR/MOR E/INFORMATION+++++8=
. 86400 IN DNSKEY 256 3 8 AwEAAavbA++++++++++++++++THIS/IS/AN/INVALID/KEY/AND/SHOU LD/NOT/BE/USED/CONTACT/ROOTSIGN/AT/ICANN/DOT/ORG/FOR/MOR E/INFORMATION+++++++++++++++++++++++++++8
. 86400 IN RRSIG DNSKEY 8 0 86400 20100515235959 20100501000000 19324 . QWXJEkPRYzAu8SpGmzRw1y9B9JOPRNl9C5csTh6Edv4xQRUb0apb7YRD mhbIgqZN4TMMme70pni93z8gn7fqtylFzCObC0prH90vq20DjxcOeZtV ufvoadCQFsUi87G2kgicZjRLSHjz/h2zJO36nmdp/S05wGxT9KX56Yoy hjuSr6AzCCQvsmDKdhL8D8SAPAZGjPs0ftfKsDyEarcy9XYP9nZfskmQ OWbx0ldr41JfibY3+onP/tA61KQdTQYZ2bAU/eQK/6Kq2YEzSzQijwdV Kex+hi4LXWB85u9uY8YMsa1MVJDY/BYkjW4HU1wvKY47oz4G3oDyI23X IR8NSA==
;; Query time: 5 msec
;; SERVER: 192.5.5.241#53(192.5.5.241)
;; WHEN: Mon May 10 09:44:35 2010
;; MSG SIZE rcvd: 1011
****** End *****
***** Root Zone Public Keys *****
[localhost]# dig +dnssec dnskey . @192.5.5.241
; <<>> DiG 9.5.2-RedHat-9.5.2-1.fc10 <<>> +dnssec dnskey . @192.5.5.241
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47371
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;. IN DNSKEY
;; ANSWER SECTION:
. 86400 IN DNSKEY 257 3 8 AwEAAawBe++++++++++++++++THIS/IS/AN/INVALID/KEY/AND/SHOU LD/NOT/BE/USED/CONTACT/ROOTSIGN/AT/ICANN/DOT/ORG/FOR/MOR E/INFORMATION+++8=
. 86400 IN DNSKEY 257 3 8 AwEAAazdM++++++++++++++++THIS/IS/AN/INVALID/KEY/AND/SHOU LD/NOT/BE/USED/CONTACT/ROOTSIGN/AT/ICANN/DOT/ORG/FOR/MOR E/INFORMATION+++++8=
. 86400 IN DNSKEY 256 3 8 AwEAAavbA++++++++++++++++THIS/IS/AN/INVALID/KEY/AND/SHOU LD/NOT/BE/USED/CONTACT/ROOTSIGN/AT/ICANN/DOT/ORG/FOR/MOR E/INFORMATION+++++++++++++++++++++++++++8
. 86400 IN RRSIG DNSKEY 8 0 86400 20100515235959 20100501000000 19324 . QWXJEkPRYzAu8SpGmzRw1y9B9JOPRNl9C5csTh6Edv4xQRUb0apb7YRD mhbIgqZN4TMMme70pni93z8gn7fqtylFzCObC0prH90vq20DjxcOeZtV ufvoadCQFsUi87G2kgicZjRLSHjz/h2zJO36nmdp/S05wGxT9KX56Yoy hjuSr6AzCCQvsmDKdhL8D8SAPAZGjPs0ftfKsDyEarcy9XYP9nZfskmQ OWbx0ldr41JfibY3+onP/tA61KQdTQYZ2bAU/eQK/6Kq2YEzSzQijwdV Kex+hi4LXWB85u9uY8YMsa1MVJDY/BYkjW4HU1wvKY47oz4G3oDyI23X IR8NSA==
;; Query time: 5 msec
;; SERVER: 192.5.5.241#53(192.5.5.241)
;; WHEN: Mon May 10 09:44:35 2010
;; MSG SIZE rcvd: 1011
****** End *****
2010/05/09
DNSSEC Look-aside Validation and / or IANA’s published Interim Trust Anchor Repository
For those network administrators who have not tried to make their resolvers working with ISC’s DNSSEC Look-aside Validation or IANA’s published Interim Trust Anchor Repository, they need to catch the remaining time left. By 1 July 2010, when the DNSKEY of the root zone is published, these work-around technologies will disappear in the networking world. Don't miss the chance to witness technological changes by yourselves.
2010/05/05
Avoid Error 404 page found by search engine
It is quite embarassing to me that the Error 404 Page of my website can be found by Google. On checking the error 404 html file, I noticed that I have not included the appropriate meta tag in header to tell search engine not to touch on that file. The meta tag should look like:
After 1 - 2 months, the Error 404 Page should not be found again.
Another approach is to place the Error 404 html file in a special directory and use robots.txt to disallow web spider to crawl on that directory which looks like:
[file robots.txt]
User-agent: *
Disallow: /cgi-bin/
Disallow :/404-file/
After 1 - 2 months, the Error 404 Page should not be found again.
Another approach is to place the Error 404 html file in a special directory and use robots.txt to disallow web spider to crawl on that directory which looks like:
[file robots.txt]
User-agent: *
Disallow: /cgi-bin/
Disallow :/404-file/
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