- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Re: DNS forwarding randomly fails for random sites
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 10:07 AM
тАО01-22-2010 10:07 AM
DNS forwarding randomly fails for random sites
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 10:13 AM
тАО01-22-2010 10:13 AM
Re: DNS forwarding randomly fails for random sites
>nslookup google.com
Server: my_server_name
Address: my_server_IP
Non-authoritative answer:
Name: google.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 11:05 AM
тАО01-22-2010 11:05 AM
Re: DNS forwarding randomly fails for random sites
I have seen this before with DNS.
Normally this is casued by intermittent network issues.
This could be an issue of pass through on the firewall. Port 53 needs to pass through UPP and TCP for accurate DNS answers.
Also note, the measures some sites take to prevent DoS and DNS poison attacks can casue issues as well.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 11:15 AM
тАО01-22-2010 11:15 AM
Re: DNS forwarding randomly fails for random sites
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 11:19 AM
тАО01-22-2010 11:19 AM
Re: DNS forwarding randomly fails for random sites
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 11:26 AM
тАО01-22-2010 11:26 AM
Re: DNS forwarding randomly fails for random sites
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1964
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;yahoo.com. IN A
;; ANSWER SECTION:
yahoo.com. 21015 IN CNAME yahoo.com.
;; Query time: 0 msec
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 12:09 PM
тАО01-22-2010 12:09 PM
Re: DNS forwarding randomly fails for random sites
> set swtrace (default is noswtrace)
> google.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-22-2010 01:20 PM
тАО01-22-2010 01:20 PM
Re: DNS forwarding randomly fails for random sites
Name Server: MyNameServer
Address: NameServerIP
lookup source is DNS
Name Server: MyNameServer
Address: NameServerIP
Trying DNS
Non-authoritative answer:
*** MyNameServer can't find google.com: Non-existent domain
Switching to next source in the policy
lookup source is NIS
Default NIS Server:
Trying NIS
*** No address information is available for "google.com"
Switching to next source in the policy
lookup source is FILES
Using /etc/hosts on: MyNameServer
looking up FILES
*** No address information is available for "google.com"