<html><body style="font-family: 'Helvetica Neue',Helvetica,Arial,sans-serif; font-size: 12px;">General techniques:<br />check logs<br />turn on verbose reporting<br />inspect network traffic<br /><br />as a start.<br /><br />--<br />Bryan Medsker<br />bryan@gnomon.xyz <br /><br /><br /><blockquote><br />----- Original Message -----<br /><div style="width:100%;background:rgb(228,228,228);"><div style="font-weight:bold;">From:</div> "Christopher Howard" <christopher@alaskasi.com></div><br /><div style="font-weight:bold;">To:</div>"AKLUG@aklug.org" <AKLUG@aklug.org><br /><div style="font-weight:bold;">Cc:</div><br /><div style="font-weight:bold;">Sent:</div>Tue, 12 Sep 2017 11:05:18 -0800<br /><div style="font-weight:bold;">Subject:</div>Re: [aklug] Oddity in network connection related to DNS<br /><br /><br />
Hmm, I cleared the browser cache and now have no browse either... This<br />
smells of some kind of firewall problem not allowing the dns to get<br />
through.<br /><br />
On Tue, 2017-09-12 at 11:01 -0800, Christopher Howard wrote:<br />
> Hi list, I'm testing an Sat Int system before sending to field, and<br />
> I'm<br />
> running into something strange. My main test systems are a Debian<br />
> Jessie notebook, and then a Debian Squeeze laptop I pull out to<br />
> confirm<br />
> a problem is not just related to one system only. So, for the most<br />
> part<br />
> everything looks fine with this connection:<br />
> <br />
> The Good<br />
> - Getting the right IP address from DHCP server on modem<br />
> - Getting the right default gw from DHCP on modem<br />
> - getting correct DNS server from DHCP on modem (checked<br />
> /etc/resolv.conf)<br />
> - I have no trouble browsing any site on the Internet through Firefox<br />
> (I don't use a proxy)<br />
> - I can ping any IP address I want from the command line<br />
> - Firewall is wide-open (for testing purposes)<br />
> <br />
> The Bad:<br />
> - If I try to do anything else on the command line involving a DNS<br />
> name<br />
> (google.com, etc.) the command fails, acting like it cannot query<br />
> DNS.<br />
> So, for example, I cannot "wget google.com" (unable to resovle host<br />
> address...) and I cannot ping google.com, and I can not even "dig<br />
> @8.8.8.8 google.com" (same for other Web sites).<br />
> <br />
> I don't have this problem on any of our other connections, so I'm<br />
> nervous something is wrong with the configuration of my modem. Does<br />
> anybody have any suggestions as to what might be going on, or how to<br />
> narrow it down?<br />
> <br />
-- <br />
Christopher Howard<br />
Computer Assistant<br />
Alaska Satellite Internet<br />
3239 La Ree Way<br />
Fairbanks, Alaska 99709<br />
1-888-396-5623<br />
https://alaskasatelliteinternet.com<br />
personal web site: https://qlfiles.net<br />
https://emailselfdefense.fsf.org/en/<br /><br /><br /><br /></blockquote></body></html>