same site - can and can't access it on different points on internal network

[milomak]

the laptop had similar reaction to the linux on the pc that i felt i could do the linux commands from it when i was running linux on it

edit - except for the hardware differences i am running the same linux on both really

 

[neoprema]

Okay so the PC was not working on Ethernet nor Wi-Fi?

 

[milomak]

laptop (windows)

Linux:
Windows:

c:\Windows\System32\Drivers\etc\hosts.

You need to open this file and edit while running notepad in administrator mode.

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

# localhost name resolution is handled within DNS itself.
#    127.0.0.1       localhost
#    ::1             localhost

let me get the same for pc (windows) which happens to be a bootcamp install

 

[milomak]

Okay so the PC was not working on Ethernet nor Wi-Fi?

yep the pc could not access the site on either interface.

so the laptop is on the ap. i am scared to move it so that it connects to the router directly

 

[w1z4rd]

My bad, I gave you bad advice. Thats to edit the hosts file. To change your dns in Windows you normally change it in the network adapter properties (right click on the network icon in your systray)

 

[neoprema]

you don't want hosts file on Windows. Hosts files are for STATIC mappings of a host to an IP address.

What you need to do is find out why 1 machine can do DNS queries on your router, but another is being denied. The fast fix is just edit your DNS settings to use 8.8.8.8 or 9.9.9.9 on all machines and it will be fine.

The only other things I can think of are;

1. Your router has an option to deny DNS queries on certain Ethernet ports and/or IP addresses - and its turned on and applying such filters.
2. You have more than one DHCP server running and both your Router AND AP are giving out IPs and your DNS lookups are actually happening on the AP not the main router (if the AP is a router). Make sure the AP is not running any DHCP or DNS services if it can and that the AP's IP is not 192.168.1.1
3. A firewall rule on the router is blocking DNS lookups from some machines (should not be unless you specifically configured it)

 

[CamiKaze]

Try this.

 

[milomak]

The only other things I can think of are;

1. Your router has an option to deny DNS queries on certain Ethernet ports and/or IP addresses - and its turned on and applying such filters.

the pc is on ethernet all the time and i never use the wifi. yet on wifi it does the same.

a freshly installed ubuntu is doing the same so i think i an rule out software as the issue.

2. You have more than one DHCP server running and both your Router AND AP are giving out IPs and your DNS lookups are actually happening on the AP not the main router (if the AP is a router). Make sure the AP is not running any DHCP or DNS services if it can and that the AP's IP is not 192.168.1.1

i have sense some of this may be what is happening. the ap is 192.168.1.103

3. A firewall rule on the router is blocking DNS lookups from some machines (should not be unless you specifically configured it)

haven't played with firewall settings at all

 

[milomak]

i was expressvpn for some other thing and decided to check. and guess what, i can access the site

 

[Jongi]

the installation of

aptitude install resolvconf

changed /etc/resolv.conf to
# cat /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search 192.168.1.1

and now it works.

the background is that neuvoo.com has 27 ip addresses attached to it.

This makes the DNS reply quite larger than average, and exceeds the maximum DNS payload size over UDP transport defined in the original DNS specifcation (512 bytes) which cause a truncated reply to be sent.