Re: DNS lookup issue in 2.1.9
John Dowdell <[email protected]>
| Newsgroups | gmane.comp.security.ipcop.user |
|---|---|
| Message-ID | <[email protected]> |
> On 17 Aug 2016, at 09:44, John Dowdell <[email protected]> wrote: > > > >> On 16 August 2016 at 21:36, John Dowdell <[email protected]> wrote: >> >> >>> On Tuesday, 16 August 2016, Achim Weber <[email protected]> wrote: >>> Hi John, >>> >>> how is your network physically connected? >>> >>> Achim >> >> On Red, wired Ethernet to Netgear ADSL modem. Modem does DHCP server. Using ISP (TalkTalk in UK) DNS servers. >> >> On green, small number of desktops and printer wired via switch. IPCOP serves DHCP. >> >> On blue, two Netgear APs connected by wired Ethernet. IPCOP serves DHCP. >> >> I have extracted the firewall to soak test at home, similar setup but BT Infinity. So far no problem. I have read that some set IPCOP to serve Google DNS. >> >> The problem in the office is that it all works for about 5 to 10 minutes, then DNS stops working. >> >> Regards >> John > > OK so I have the problem recurring now on my soak test rig with IPCOP 2.1.9. I find that a client on Green (I saw the problem on Blue too but not testing that yet) cannot web browse to any internet site. However nslookup and dig do return the correct IP address of web sites (taking care to use ones probably not in any cache), but traceroute on both the site name and IP address terminate at the Green interface on IPCOP. > > If it helps, I'm running NTP service. > > Any help appreciated. > best regards > John And a bit more info. Perusing the firewall logs shows that traffic to ports 80 and 443 from Green is being rejected, even though I have explicitly declared rules for these two (and I don't think I need to, do I? Seemed to work ok without those for a time). Something isn't right ... I'm a newbie with ipcop so any assistance is welcome. Best regards John ------------------------------------------------------------------------------ _______________________________________________ IPCop-user mailing list [email protected] Manage your subscription or unsubscribe https://lists.sourceforge.net/lists/listinfo/ipcop-user