[aklug] Oddity in network connection related to DNS

Christopher Howard christopher at alaskasi.com
Tue Sep 12 11:05:18 AKDT 2017


Hmm, I cleared the browser cache and now have no browse either... This
smells of some kind of firewall problem not allowing the dns to get
through.

On Tue, 2017-09-12 at 11:01 -0800, Christopher Howard wrote:
> Hi list, I'm testing an Sat Int system before sending to field, and
> I'm
> running into something strange. My main test systems are a Debian
> Jessie notebook, and then a Debian Squeeze laptop I pull out to
> confirm
> a problem is not just related to one system only. So, for the most
> part
> everything looks fine with this connection:
> 
> The Good
> - Getting the right IP address from DHCP server on modem
> - Getting the right default gw from DHCP on modem
> - getting correct DNS server from DHCP on modem (checked
> /etc/resolv.conf)
> - I have no trouble browsing any site on the Internet through Firefox
> (I don't use a proxy)
> - I can ping any IP address I want from the command line
> - Firewall is wide-open (for testing purposes)
> 
> The Bad:
> - If I try to do anything else on the command line involving a DNS
> name
> (google.com, etc.) the command fails, acting like it cannot query
> DNS.
> So, for example, I cannot "wget google.com" (unable to resovle host
> address...) and I cannot ping google.com, and I can not even "dig
> @8.8.8.8 google.com" (same for other Web sites).
> 
> I don't have this problem on any of our other connections, so I'm
> nervous something is wrong with the configuration of my modem. Does
> anybody have any suggestions as to what might be going on, or how to
> narrow it down?
> 
-- 
Christopher Howard
Computer Assistant
Alaska Satellite Internet
3239 La Ree Way
Fairbanks, Alaska 99709
1-888-396-5623
https://alaskasatelliteinternet.com
personal web site: https://qlfiles.net
https://emailselfdefense.fsf.org/en/


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