Questions tagged [security]

Information about network security

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5
votes
2answers
1k views

Is it posible to choose what entry node you want to use?

If I know of an entry node that I know the device running it is not malicious or being watched, do I have the ability to only use that as an entry point? And would this be potentially more secure than ...
8
votes
1answer
2k views

What is the difference between NTor and TAP?

Recently I read that Tor switched from TAP handshake requests to NTor handshake requests. This seems to improve the performance and doesn't put such a high load on relays (because of Mevade). However ...
10
votes
3answers
363 views

Is it secure to set the contact information when building up a Tor relay?

When I am setting up a tor relay, one option is to determine the contact information as an email address. Is it secure considering information harvesting by NSA for instance or would be better to hide ...
5
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4answers
2k views

How safe are Tor users?

Given that Silk Road was just shut down, an article was published stating that: Tor Can't Always Keep You Safe; Just Ask Silk Road ... careful traffic monitoring and a little math you can figure ...
5
votes
1answer
152 views

Are virtual servers like Tor Cloud less advisable?

It's probably not difficult to extract Tor encryption keys from storage or memory on virtual hardware like EC2 instances. Similar issues likely exist for rented physical servers with management access....
9
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4answers
326 views

May I do security inspection on exit relays?

If I decide to run an exit relay may I run security inspection (Intrusion Prevention System, anti-spam, anti-malware etc.) on the traffic leaving the Tor network? Would this be considered legally and ...
8
votes
1answer
202 views

Who can see my bridge's ContactInfo?

I'm guessing that a bridge uploads its ContactInfo to the bridge authority, so there's a point of contact for the Tor project. Is this information available to any other parties, i.e. users ...
13
votes
2answers
478 views

Are there trustworthy third-party audits of the Tor source code?

Was the Tor source code trustworthily audited by a third party to check if it does not contain a back-door? Are such audit results freely available?
18
votes
7answers
25k views

Can Tor be used with applications other than Web browsers?

From what I can see Tor mainly handles your web browser's traffic, but is there a way to do all of your connections through it? Like email, Dropbox, Carbonite backup, Skype etc? (Please explain ...
13
votes
3answers
817 views

Are there any vulnerabilities in the process of onion routing?

In onion routing, messages are repeatedly encrypted and then sent through several network nodes called onion routers. Each onion router removes a layer of encryption to uncover routing instructions, ...
15
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2answers
1k views

Is Tor's security compromised if other services are connecting in the clear?

I am using the Tor Browser Bundle, so all my internet browsing traffic is routed via Tor. However if I have other services like Dropbox, another web browser, etc. running on my machine that aren't ...
15
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3answers
2k views

Can government agencies track what sites I'm visiting when using Tor?

Can agencies such as the NSA or GCHQ track what websites I'm visiting if I'm using the Tor Browser Bundle? What about hidden services?
14
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1answer
959 views

Is it safe to run an entry node server?

After some research, I found that there are mostly relay (middle) nodes, and less exit and entry nodes. But why? The connection from the client to the entry node is encrypted, so there should be no ...
23
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5answers
9k views

Securely hosting a Tor hidden service/site

There are some detailed instructions for setting up a Tor site at torproject.org1. It seems that it would be most secure to use a dedicated machine for this task if possible. I've read elsewhere that ...
13
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5answers
3k views

Aside from disabling Javascript in Firefox, how can I make Tor Browser Bundle more secure?

In a recent Tor security advisory, Roger Dingledine writes: Consider disabling JavaScript (click the blue "S" beside the green onion, and select "Forbid Scripts Globally"). Disabling ...
2
votes
0answers
128 views

Are there any good practices to keep my Tor relay's private key safe? [closed]

Assuming that I run a Tor relay on a virtual private server running linux, are there any good practices to keep my relay's private key safe? We can take for granted that software packages constantly ...