Alternative DNS Servers - no filter/censorship (buydomains.com problem)
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I have an idea - Since you are obviously worried enough to want to make sure your DNS isn't getting tampered with, why not tell pfsense to be your resolver?
Upgrade to 2.2, turn off DNS forwarder, turn on DNS resolver, remove all those DNS server IPs from your list, do not allow DNS on wan to over ride your DNS list. Turn on dnssec and see if your problems go away?
(You may still need to flush DNS cache on your LAN machines after one time)
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I'm already on 2.2 and DNS forwarder is already off and DNS resolver on (I use the resolver for my local domains).
But where do i place the alternative DNS-Servers i want to use?
And what is the difference between a normal setup (like it is now) and the resolver thing? -
You don't place any alternative servers anywhere.
Go into DNS Resolver and turn on DNSSEC if you haven't.Then check each one of the clients ethernet adapter settings for IPV4 and IPV6 and make sure they get DNS and IP automatically.
Then flush your DNS cache on all your machines (Windows I presume)
right click cmd tool and open as admin and type ipconfig /flushdns and hit enter.
In the past I have also seen people using free firewall/av having their DNS redirected "for their safety".
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No - Definitely should not hit every computer in the house.
Sounds like a DNS issue. Where are you getting DNS from?Very much possible with hacked cable modem. Stop pointing your DNS to cable modem in the first place.
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You don't place any alternative servers anywhere.
If i don't add the DNS nameservers i want to use how do i use them ???
The reasons to use other DNS servers then the ones you get from your provider are:
1. No content filter
2. maybe fasterThen check each one of the clients ethernet adapter settings for IPV4 and IPV6 and make sure they get DNS and IP automatically.
Why should i do that if i don't want to use DHCP and want all my computers, consoles, micro controllers to have fixed IP's?
Very much possible with hacked cable modem. Stop pointing your DNS to cable modem in the first place.
The cable modem/router is getting it's firmware updates from the provider and you can't do anything about that.
I guess the box is save as it's the only one you can use with this provider (you get it from them) and it only works in your house.
It's a FritzBox 6360: http://avm.de/produkte/fritzbox/fritzbox-6360-cable/
You can't buy it and you only get it from 2 providers.If the cable modem would be hacked then i guess a pfSense restart would not solve the problem?
What do you mean by "Stop pointing your DNS to cable modem in the first place."
I had it working like that with my old Asus Dark Knight and Tomato for a long time.
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What do you mean by "Stop pointing your DNS to cable modem in the first place."
He means don't use your cable modem as DNS. Use something external that is unlikely to be fiddled with, like Google DNS, Level3 or OpenDNS. Your cable modem will be programmed to use your ISP's DNS, and some shady ISPs will do DNS injection, 404 redirection to serve ads, and other tricks etc. What's interesting is that people have been complaining about being redirected to buydomains.com for like the past 10+ years now, and it was usually browser malware that causes it.
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3. You dont have to use Lizard Squads advertisers via DNS redirects, although its not specifically mentioned, theres no reason why LS couldnt if they thought about it, we just dont know….
http://www.techweekeurope.co.uk/networks/lizard-squad-home-routers-ddos-159281?PageSpeed=noscript -
It's a FritzBox 6360: http://avm.de/produkte/fritzbox/fritzbox-6360-cable/
You can't buy it and you only get it from 2 providers.Great shame you cannot buy it, considering features like this nifty unauthenticated command injection :D
What do you mean by "Stop pointing your DNS to cable modem in the first place."
^That ;)
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Its become recently apparent to me that as long as you keep using those sorts of non-dnssec compliant DNS servers you will continue to be vulnerable to having your DNS jacked. So, consider using them as bad. So, if its bad, no matter how much you like it, you shouldn't use it right?
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@KOM:
He means don't use your cable modem as DNS. Use something external that is unlikely to be fiddled with, like Google DNS, Level3 or OpenDNS. Your cable modem will be programmed to use your ISP's DNS, and some shady ISPs will do DNS injection, 404 redirection to serve ads, and other tricks etc
I'm totally confused now. Isn't that what i'm doing/trying to do?
I add the DNS Servers to system > general setup and point the computers to pfSense (192.168.0.1)
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See there are 2 directions to go with unbound.
1 - Let unbound work in resolver + DNSSEC mode using just the root internet servers. No servers list anywhere. Yes its super nice. No it won't stop you kid from trying to find nude pics of their favorite model.
2. Put unbound in forwarder mode and let it work with the list of servers you put in system > general. Depending on if the servers in the list are DNSSEC compliant, you may get to use DNSSEC. If not, then you can't. Yes this may help you control content and prevent someone from seeing Miss July or it may also allow your DNS to get jacked with in a way you were not expecting.
You probably shouldn't be mixing these two on pfsense.
What I might do if it were me is keep unbound in resolver mode + DNSSEC so the vast majority of the network gets unmolested DNS and go to the kid's machine and manually enter the DNS server IP of your choice into the adapter setting to prevent that one machine from being used to find the dimensions of Miss July.
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There are no Kids and i don't want to filter something buy DNS Servers.
All i want to do is making sure i use DNS Name servers that are not filtering or censorship
and that are fast.That whole DNS thing and all the settings in pfSense are confusing :(
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My god. Then your settings are super simple.
Go to system > General
delete all your server IPs.
uncheck Allow DNS server list to be overridden by DHCP/PPP on WAN
uncheck Do not use the DNS Forwarder as a DNS server for the firewall
save.
Then go to DNS forwarder and make sure its off. Save.
Then go to DNS resolver and make sure its on.
Turn on DNSSECSave
Now, you should have raw, un-tampered unmolested DNS from the root servers.
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I add the DNS Servers to system > general setup and point the computers to pfSense (192.168.0.1)
That's correct, but what is your pfSense pointing to? Probably your gateway which is your cable modem, or IP address(es) supplied by your ISP. Don't use those. Use external 3rd-party DNS from a list such as this:
Free & Public DNS Servers (Updated January 2015)
Provider Primary DNS Secondary DNS
Level3 209.244.0.3 209.244.0.4
Google 8.8.8.8 8.8.4.4
DNS.WATCH 84.200.69.80 84.200.70.40
Comodo Secure DNS 8.26.56.26 8.20.247.20
OpenDNS Home 208.67.222.222 208.67.220.220
DNS Advantage 156.154.70.1 156.154.71.1
Norton ConnectSafe 199.85.126.10 199.85.127.10
GreenTeamDNS 81.218.119.11 209.88.198.133
SafeDNS 195.46.39.39 195.46.39.40
OpenNIC 107.150.40.234 50.116.23.211
SmartViper 208.76.50.50 208.76.51.51
Dyn 216.146.35.35 216.146.36.36
FreeDNS 37.235.1.174 37.235.1.177
censurfridns.dk 89.233.43.71 91.239.100.100
Hurricane Electric 74.82.42.42
puntCAT 109.69.8.51 -
As a side note: DNS hijacking flaw in ZynOS-based routers.
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My god. Then your settings are super simple.
But that is what i already explained in the beginning.
But i don't get how this makes sure you get the fastest DNS server.
Tutorials say you should pick one near your location and there is:
https://code.google.com/p/namebench/
and
https://www.grc.com/dns/benchmark.htm@KOM:
That's correct, but what is your pfSense pointing to? Probably your gateway which is your cable modem, or IP address(es) supplied by your ISP.
Is that not what you normally do - point your router to the modem?
Some years ago i used Windows Server as router and did it the same way:
Modem (10.0.0.1) <-> Win Server NIC1 WAN (10.0.0.2) - Win Server NIC2 LAN (192.168.0.1)Also it worked that way with my old Asus Router with Tomato firmware.
And thats different from what kejianshi is suggesting.
Are you talking about system -> routing -> gateways (Gateway IP address)?
There you add only one external 3rd-party DNS and in "system > general setup" the others?
Is there something wrong with the https://www.wikileaks.org/wiki/Alternative_DNS list?As a side note: DNS hijacking flaw in ZynOS-based routers.
If my cable modem/router has a problem then why the problem goes away after a pfSense restart?
Also there is nothing i can do about it if the modem has a problem.
You have to wait for the automatic update from the provider.
I only use this device as modem cause DECT and WLAN is bad, not much control and you can't add
your own VoIP numbers. You can use it only with the numbers from the ISP. -
Is that not what you normally do - point your router to the modem?
No, that's what I never ever do. Definitely never ever with any of this completely unmaintained ISP-provided POS (which is ideally dumbed down to a bridge instead if you cannot get rid of it altogether.)
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"But i don't get how this makes sure you get the fastest DNS server" - It will be super fast. Only the 1st request to a page will require a look at the root servers. The answer to the request will be cached (saved in memory). From then on, the answers will come directly from pfsense. It will take 1ms. If you go into the advanced and enable Prefetch Support and Prefetch DNS Key Support sites you visit often will be kept warm in cache and rechecked and recached often and won't expire. You will have fast fast resolver.
"Is that not what you normally do - point your router to the modem?"
Yes - If you are my grandmother… There is a difference between "simple" and "optimal"
And isn't your DNS getting spoofed with that setting? The answer should be obvious by now. -
Maybe its just me but I would wish people would stop calling devices that are doing NAT modems ;) Its not a "modem" if its doing NAT.. Its a gateway if its doing modem/router functions..
A modem is just dumb device that converts media type.. Modems don't provide dns or dhcp services, etc..
Why would anyone point their fancy pfsense router/firewall running nice dns forwarder or resolver like dnsmasq or ubound to some BS you have no idea what its using/doing of the dns forwarder service running on some isp provided "gateway"
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Is that not what you normally do - point your router to the modem?
In the context of DNS, yes, this is what most home users do and it used to be perfectly ok. Used to. Now you're better off using an external DNS. I've found that Google is often faster than my local ISP, an dthey aren't fiddling like some ISPs. However, being Google, they're likely tracking and analyzing all the DNS requests. If that bothers you, try another free DNS.
