Re: [tor-talk] Three questions

2014-08-11 Thread Jann Horn
On Mon, Aug 11, 2014 at 05:01:14PM +, m...@ruggedinbox.com wrote: > About connecting to an ssh server with keys, just a little doubt: if I > connect to all my servers without changing my ssh private and public keys > (so without deleting '/etc/ssh' and re-creating the keys every time), would >

Re: [tor-talk] Wikimedia and Tor

2014-10-02 Thread Jann Horn
On Thu, Oct 02, 2014 at 01:15:32PM -0600, Mirimir wrote: > What's needed, I think, is challenge-based (as opposed to > reputation-based) proof-of-work that's very difficult to cheat. That > sounds like Bitcoin, doesn't it? Yes, but a bit more like Hashcash given the usecase: http://www.hashcash.or

[tor-talk] To how many other relays does a relay have connections?

2014-12-27 Thread Jann Horn
To how many other Onion Routers does an Onion Router typically have open TLS connections? I suspect that the answer is something like "to nearly all of them", but would like to have that confirmed. pgp7DZDJFs_yz.pgp Description: PGP signature -- tor-talk mailing list - tor-talk@lists.torproject.

Re: [tor-talk] To how many other relays does a relay have connections?

2014-12-27 Thread Jann Horn
On Sat, Dec 27, 2014 at 04:39:07PM +0100, Tom van der Woerdt wrote: > It depends on the OR. I had a quick look at some of my own ORs: a relay with > ~5MB/s had an average of 40 open connections to other ORs, and a relay with > ~20MB/s reported 250. These numbers seem rather stable: across all my no

[tor-talk] Lots of tor relays send out sequential IP IDs; please fix that!

2014-03-31 Thread Jann Horn
Well, the subject line pretty much says it all: Lots of Tor relays send out globally sequential IP IDs, which, as far as I know, allows a remote party to measure how fast the relay is sending out IP packets with high precision, possibly making statistical attacks possible that could e.g. pinpoint t

Re: [tor-talk] Lots of tor relays send out sequential IP IDs; please fix that!

2014-03-31 Thread Jann Horn
On Mon, Mar 31, 2014 at 05:31:31PM -0500, Joe Btfsplk wrote: > On 3/31/2014 4:12 PM, Jann Horn wrote: > >Well, the subject line pretty much says it all: Lots of Tor relays send out > >globally sequential IP IDs, which, as far as I know, allows a remote party to > >measure

Re: [tor-talk] [cryptography] The Heartbleed Bug is a serious vulnerability in OpenSSL

2014-04-09 Thread Jann Horn
On Wed, Apr 09, 2014 at 02:29:19PM -0400, Christopher J. Walters wrote: > It seems no one wants to talk or hear about this issue. It is not > being reported on media sites or anywhere else, other than the > Heartbleed site, and the OpenSSL lists. And FD... and arstechnica... and Heise... > This

Re: [tor-talk] [cryptography] The Heartbleed Bug is a serious vulnerability in OpenSSL

2014-04-09 Thread Jann Horn
On Wed, Apr 09, 2014 at 03:07:11PM -0400, Christopher J. Walters wrote: > On 4/9/2014 3:04 PM, Michael Wolf wrote: > >On 4/9/2014 2:29 PM, Christopher J. Walters wrote: > > > >>This bug has been a known issue for about 2 years, and we are only now > >>learning about it. > > > >The bug has existed f

Re: [tor-talk] Thoughts on Guards

2014-06-09 Thread Jann Horn
On Mon, Jun 09, 2014 at 05:09:31PM +0200, Martin Kepplinger wrote: > So assuming that people here > https://www.blackhat.com/us-14/briefings.html#you-dont-have-to-be-the-nsa-to-break-tor-deanonymizing-users-on-a-budget > are serious and do a "straight-forward", yet clever passive-observer > attack