Questions tagged [dns]

Domain Name System (DNS) translates word-based domain and host names to numerical IP addresses.

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53 votes
3 answers

How does Tor route DNS requests?

Tor can only handle TCP connections, but DNS is a UDP protocol. How does Tor route DNS requests over its TCP based network? Why can the same approach not be used to route all UDP traffic over Tor?
Megan Walker's user avatar
  • 2,590
26 votes
1 answer

.onion Domains DNS lookup

How does Tor resolve .onion Domains? Are there also some central DNS servers in the Tor network that store these records? Is there a chance that two hidden services generate the same domain name?
binfalse's user avatar
  • 363
10 votes
3 answers

How can I test an application for proxy leaks?

If I have an application that supports a SOCKS proxy, and I point it at a running Tor instance, how can I be sure that all traffic the application sends (including DNS requests) are sent through the ...
Tom Ritter's user avatar
3 votes
1 answer

Signal NEWNYM vs Stream isolation

Resources. This answer explains well what happens at NEWNYM request, and I also dig into the code, yet my lack of knowledge on low level networking prevents me to make a proper design decision if ...
nopara73's user avatar
  • 173
16 votes
3 answers

Register .onion as gTLD?

For some weeks in 2012, "arbitrary" gTLDs could be applied for at ICANN: On June 20, 2011 ICANN's board voted to end most restrictions on the generic top-level domain names (gTLD) from the 22 ...
unor's user avatar
  • 398
14 votes
1 answer

How are domain names created in the Tor network? [duplicate]

I wonder how the .onion domain names can be created? I mean, I don't assume that there is any central domain name provider. So how and where are those addresses created?
user2339252's user avatar
12 votes
4 answers

Good DNS services for exit nodes

Open DNS and others hijack failed DNS lookups. Some DNS services censor or block access to sites due to government or corporate coercion. Is there a list of preferred DNS servers, ones that don't ...
Herbalist's user avatar
  • 465
10 votes
1 answer

How would a registration of the .onion gtld impact the Tor network?

The title pretty much says it all. What effects would a gtld registration of .onion domain have on the Tor network, is this something to worry about? Or is it something to welcome and slap a web2tor ...
Yuka's user avatar
  • 231
6 votes
2 answers

How does Tor handle DNS poisoning?

Tor uses an exit node to resolve DNS as per How does Tor route DNS requests?. Isn't it very easy for the exit node to serve a fake website by DNS poisoning? How does Tor handle this threat?
gtd890's user avatar
  • 61
5 votes
3 answers

How do I resolve DNS using Tor?

I don't want my traffic to be proxied though Tor, but I want to anonymize DNS requests. How do I use Tor as a DNS server?
anonymous's user avatar
2 votes
5 answers

How do I revoke a .onion address?

Can I revoke a .onion address, to "open it" back up for registration? It is possible, in the world of certificate authorities, to maintain revocation lists for keys that have been compromised or are ...
Nathan Basanese's user avatar
2 votes
1 answer

Debian-based: torsocks + Chromium-browser = DNS Leakage?

System: latest Kali ( Debian-based ) $ torsocks chromium-browser 00:00:00 libtorsocks(1): sendmsg: Connection is a UDP or ICMP stream, may be a DNS request or other form of leak: rejecting. 00:00:00 ...
anonymous's user avatar
1 vote
1 answer

Clearing the client side DNS cache provides privacy improvement?

Context. In my quest on figuring out if I must use NEWNYM signal or stream isolation is enough for me I dig into the code and narrowed down the possible privacy improvements that NEWNYM can bring over ...
nopara73's user avatar
  • 173
1 vote
1 answer

Cloudflare's new .onion DNS resolver?

Cloudflare recently announced their new "hidden DNS resolver". https://dns4torpnlfs2ifuz2s2yf3fc7rdmsbhm6rw75euj35pac6ap25zgqad.onion/ I'm wondering if it can be used with the tor browser or the ...
user22387's user avatar
1 vote
1 answer

torrc DNSPort 53 - Tor browser will not start / Ubuntu 15

I try to set up a local redirection through tor as described here: My system is Ubuntu 15.04. Fresh Tor installation works fine. ...
Bart's user avatar
  • 111
1 vote
1 answer

resolving onion domains partially fails

Init: For user anonymous configured transpared proxy. Wireshark sniffing lo... Trying to use console network-tools torified. anonymous@kali:/tmp$ time strace -s6000 -t -f dig facebookcorewwwi....
overuser's user avatar
0 votes
1 answer

Tor Browser's "new circuit": SSL session, DNS cache, and other details

If I understand correctly Tor Browser's "new circuit" attaches new connections to a new circuit while letting old connections finish in the old circuit. It does not clear out cookies, so ...
user33390's user avatar