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Questions tagged [dns]

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

40
votes
3answers
44k views

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?
11
votes
3answers
1k views

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 ...
5
votes
1answer
2k views

Why does Tor publish IP addresses of exit nodes?

I am new to Tor and currently trying to understand the architecture of onion routing. However, I came across this TorDNSEL which makes it possible (for a tool using TorDNSEL) to detect whether ...
3
votes
1answer
305 views

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 ...
20
votes
1answer
15k views

.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?
11
votes
4answers
874 views

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 ...
15
votes
3answers
1k views

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 ...
11
votes
1answer
281 views

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 ...
5
votes
3answers
1k views

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?
2
votes
5answers
168 views

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 ...
11
votes
1answer
2k views

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?
2
votes
1answer
777 views

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 ...
1
vote
1answer
213 views

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 ...
1
vote
1answer
142 views

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 ...
1
vote
1answer
506 views

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....
1
vote
1answer
2k views

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

I try to set up a local redirection through tor as described here: https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy My system is Ubuntu 15.04. Fresh Tor installation works fine. ...