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If you think something is missing and should be answered here, just drop your questions here.

Do people who are giving presentations need to buy a ticket? Can presenters invite friends to see their presentation?


General Questions

Where can I buy the congress T- and Sweatshirts? (where sold out, as I wanted one)

I would like a Sweatshirt, too. (great design this year) -- sidolin

/me too --Pberndt 14:10, 3 January 2007 (CET)
/me too, Girly Hoodie in S. --Beate 22:43, 3 January 2007 (CET)
/me too --noise Also: What clothing company manufactured the sweatshirts? I would like to buy some blanks.

When will all the video will be accessible online? (and where?)

Where can i get the list with MAC-Adresses of default gateways and dns?

MAC of default gateway ist everywhere 00:0C:DB:F7:AF:00

Will there be any public FTP-servers like last year?

Yes, FTP-Cluster: ftp://ftp.congress.ccc.de

Or use: http://ffsearch.eof.name/

Will there be any IPv6 Content?

Yes! https://events.ccc.de/congress/2006/IPv6#some_IPv6_Servers

Will there be 802.11a wifi at the congress?

Yes, look here: NOC

Can I bring my own wireless equipment to the Congress?

No, please do not bring any wireless access points with you and please do not operate a wireless access point at the 23C3.

Can I run my own network or my own DHCP server at the Congress?

No, please do not ever configure your laptop to run in Ad-Hoc mode nor otherwise create a network and please do not run DHCP servers.

Is it okay to use unencrypted protocols (http, telnet, smtp, pop3, imap, irc et al) on the congress network?

While you certainly can use those protocols, expect others to see everything you transmit including usernames, passwords, your email, your dirty talk with your partner and anything else you transmit and make appropriate fun of you.
You are advised to use either the secure counterparts to those protocols (https, ssh, pop3s, imaps et al) or create an encrypted VPN tunnel to the outside world if you really want to use insecure protocols. There is a HowTo on doing this with OpenSSH available in English.
Also note that simply using Tor to encrypt your insecure protocols is an even worse idea. The exit node of your Tor connection can read everything you transmit in the clear. Including everything mentioned above. Also, the Tor exit node may happen to be within the congress network again and you'll have the same problem as before.

I'm 17 years old. Any problems there?

Besides: Hackers should be judged by their hacking, not bogus criteria such as degrees, age, race, or position. (taken from: Hacker ethic)

Is the Congress-Center open 24/4?


What to bring to a Lightning talk?

Do I need my computer with a VGA available or do I need a USB key with my presentation on it? If I need a USB key, which files format do u support? [oasis, pdf, ppt, keynote] Are all talks confirmed? I see no changes on the wiki pages...

I think your motto is grammatically incorrect. Shouldn't it be "Whom can you trust?"?

Thank you for pointing this out to us. You are not the first to do so, though. In a nutshell, it depends on whom you ask. Common Errors in English Usage by Paul Brians has the following to say about "whom": "ýWhomý has been dying an agonizing death for decadesýyouýll notice there are no Whoms in Dr. Seussýs Whoville. Many people never use the word in speech at all." This trend is especially strong in US and International English, but also in everyday spoken English in the UK. While you could argue that using "whom" still makes the motto "more correct", keep in mind that the motto is a quote from the film Brazil (more on the background can be found in this blog post). Quoting from the film, we didn't feel the need to correct the grammar of film-maker Terry Gilliam (of Monty Python fame). We might add that, unlike everyone who critizised this error in the motto so far, Mr. Gilliam is a native speaker.

Will you be allowed to bring your own food into the Congress-Center?

Rule of thumb: Feel free to bring the cookies your Grandma baked - but never order pizza (or things like that) into the bcc.

The reason is that there is a company called "Progast" which holds the exclusive right to sell food inside the bcc. This is a standard arrangement for this kind of event which is not subject to discussion. It allows for moderate food prices and helps to avoid the incredible amount of waste which many people found quite discomforting at previous congresses.

With this in mind, please remember to treat Progast employees respectfully! In case you experience (rather rare) problems which cannot be resolved immediately, please let Kathe know (the Angels will know where to find her).

Are there guidelines concerning videotaping/taking still pictures at 23C3?

Of course, yes. But same rules apply for private videotaping and still pictures as for the press. See the Guidelines for press at the Congress for details.

Can I buy a printed summary of most of the congress (conference proceedings) like last year?

Yes, you can buy the 23C3 Proceedings at the info point like last year.

Will there be a free PDF of the conference proceedings like last year?

Yes. You will find it here: 23C3 Proceedings.

Is it possible to get the presentation slides for all the talks?

Yes, have a look on the detailed website to the talk. Most will be available at the time of the talk, some will be available after the congress. A minority of speakers decided to not submit their slides.

I've looked around quite a bit, but I can't find any slides. I couldn't even find them after 22C3. WTF?

Will there be a CaCert (http://www.cacert.org/) auth possibility at 23C3?

Yes, see CAcert

Can I participate in a smoke free-environment or will smoking be allowed everywhere?

See http://events.ccc.de/2006/12/05/the-smoking-situation-revisited/. We ask participants not to smoke inside the building which resulted in a more or less smoke free environment last year.

When will Recordings be available?

Exactly five days, 23 minutes and 45 seconds after the closing event. Or, if we cannot make that: when they're ready.

What's the idea behind "(WOMEN ONLY)" lectures? We thought the whole idea of the 21st century was to STOP sexual discrimination, and now you ACTIVELY PROMOTE it?

There are no "lectures" in the official programme for women only. However, 3 workshops in the self-organized workshop area organized by the Hacksen (a group of women and girls in the CCC) deal with female experience in the computing world and the organizers chose to make those open for women only. We trust you to find something else to attend, maybe going to one of the 98.12% of all events that are not for women only. However, we thank you for your concern regarding gender equality at the congress. We welcome your suggestions to overcome the fact that 81.8% of all speakers at 23C3 are male. This is definitely something where we could need your help as a concerned participant.

What is wrong in having 81.8% of all speakers at the 23C3 being male?

Everything. There are lots more women here at 23c3 than I have seen before. 24c3 needs to have at least 30% female speakers (the women selling T-Shirts don't count!)

This is an answer, but not a satisfying one.
The problem is in discrimination based on bogus criteria, not on there being significantly less attendants of a certain gender, race, viewpoint, etc.
Gender is not always bogus criteria - this is perhaps the case in the women only lectures, though I doubt it. Despite this, I think that people have a right to place arbitary restrictions on private events they control, even if they are incorrect.
I suggest that placing arbitary targets for the number of speakers of a certain gender is the wrong way to encourage more of such gender to attend. Indeed, it seems to almost patronize, as if they cannot prove their worth through criteria that matter.
Actually, the problem is usually that those searching for speakers only think of their immediate circle of friends, who happen to be very similar to them. Setting quota goals (even if there are no sanctions) helps encourage such people to think harder, and to actively search for more of the minority.
I am a woman and sick and tired of all the excuses why there is no equal representation. We are geeks, too, and want to be accepted as such. Maybe there should be an all-women-speaker XC3 :)
I was happy to see more women (and some kids!) at 23c3 - so maybe 24c3 needs to sort out child care, and then more women will attend, get to know people, and be considered as speakers for 25c3.
Apart from the fact that I think child care would be the nice thing to have, I don't like the direction the previous statement is aiming at. The solution cannot be to make it easier for women to manage children and the congress but to make it a matter of course that men are just as responsible for childcare as women are! I'm sick and tired that it's only a topic for women how they will handle a job AND children. I NEVER hear men talk about this. This problem doesn't seem to exist for them. At least not in Germany. Once again Sweden appears VERY attractive to me ;)

Will there be an Echolink/PR gateway or a repeater for HAM Radio ?

There are many Repeaters, here are the next to the bcc: DB0TA 438. 7750 RU702 JO62PM Berlin-Funkturm DB0KOB 1298. 4250 RS17 JO62PM Berlin DB0BC 438. 7250 RU698

You also can ask the member of chaoswelle at room c04 or call "CQ d23" on 145,375 Mhz or 433,625 Mhz.

We are in Room c04 if you search us.

How can I setup my laptop to tunnel all network traffic through SSH?

The "How to Survive"-article doesn't cover this yet. So far I just found hints on tunneling a single port. Some good hints anyone? try portforwarding via iptables, or give Secure Network Forwarding Tunnel a try. maybe there are better solutions.

HowTo on doing this with OpenSSH

The HowTo above requires OpenSSH 4.3 - properbly not all people will upgrade...

A workaround/nice trick for older SSH-Versions:

0. Install pppd on your server & client

1. Enable IP-Forwarding and NAT/Masquerading on the machine your SSH-Server is running on. (in Linux, as root)

echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -s -j MASQUERADE

2. On your client add a dedicated route to your SSH-Server via your default gw: (in Linux, as root)

route add InsertYourSshServerAddressHere gw `route -n | grep -E '^' | awk '{ print($2) }'`

3. run pppd-over-ssh (one line, in Linux, as root)

pppd nodetach noauth defaultroute replacedefaultroute pty "ssh root@InsertYourSshServerAddressHere pppd updetach noauth passive notty"

Authenticate using password or better using keys.

Have a lot of fun! :)

Do you want a clean solution? Setup openvpn - oder openssh 4.3, of course.

Secure Messengers

Which messengers are logging in secure? Can i use for example Skype or Jabber without giving someone the chance to sniff my password?

Jabber is secure when using SSL (you can check this in your client usually). Skype is a somewhat obfuscated, not easy to sniff, protocol. This is most likely security by obscurity, you have to decide whether you think that noone has tools to decrypt skype messages or whether you want it really secure (use SSL). In general, you can test this at home using a tool like tcpdump (on Linux/BSD/OS X, start it with tcpdump -A -s 2048) or Wireshark (former Ethereal) on Windows -- if you see your password/username in plaintext, everyone could.

Where to buy Mate for a normal price execpt for metro?

If you are german: Look at the Club-Mate forum and search for your town or ask for places near to you. There is also a nice list about Berlin Mate-stores. http://www.iphpbb.com/board/index.php?nxu=77421311nx15157

Devon Miles. Where do you get that music?

Where in the wiki am I supposed to write if I started a project during or after the congress? (The projects area in the wiki does not seem to be editable any longer)


See also Tickets

When should I get my tickets?

It is a good idea to buy the ticket at Dec 26th or the night from Dec 26th to 27th, because then you don't have to wait in the line for hours in the morning of Dec 27th.

How much for a company ticket? (one person)

250 euros. See Tickets

Can I buy my tickets in the night from Dec 26th to 27th all night long?

Yes. The cash desk is open from late afternoon (around 6pm / 18:00) at the 26th until the evening of the 30th.

Does "cash desk" mean that we have to pay cash? What about ec-cards or credit-cards?

Yes, you can only pay with cash. But there are various banks next to the Berliner Congress Center.

Is there also a discount on the tickets for Students or Unemployed?

Students have to pay the usual entrance fee. The CCC grants discounts for some special supportworthy groups: Pupils (with credentials) and CCC members, as a thank for their support all the year around. You can become a CCC member now or at the 23C3.

Will there be a discount for ALG2 recipients?

Yes, of course. Even though the CCC isn't a welfare organisation.

Will there be a discount for anybody else?

If you really can't afford the Congress, you may talk to someone from the Orga team, maybe they can do something.

I'm a pupil, though I don't have a pupil identity card. How else can I prove at the entrance, that I'm a pupil? Can I just take my last year's report card?

No. And we don't have the time for discussion at the cash desk. There are more participants behind you, who have to wait while you try to convince the cash desk angels.

It's not our fault that you missed to update your school ID card.

But a "Schulbescheinigung" still works?

A Schulbescheinigung is a simple printout of your school record which (bears the school seal and) states that you were a student at a specific school at the time the document was printed. It can be faked relatively easily and is not intended to replace the pupil ID (which also carries your photo and has a validity timeframe). Anyway, what's the point? A pupil ID is usually issued within one day, just about as quickly as a Schulbescheinigung. Why would you carry a Schulbescheinigung but not a pupil ID? You have read the rule. If you do not have a pupil ID, prepare to pay the full price.

What's the difference between a "student" and a "pupil?" I am attending a university in the US full time and want to know if I am eligible for the discount. If so, what documentation is acceptable? Is my school-issued ID enough?

Think "pupils" as people attending a K-12 school (up to and including highschool). People attending a university are called "Studenten", so you will have to pay the full price like many other people coming to the congress. :-) (Only pupils, who are still going to school, will get a discount)

What about apprentice (Auszubildende). They also have a school ID card. Do they also get a discount on the tickets?

At #23c3 they said: "If you got a Schülerausweis (english, "school-issued ID card"), you get the discount"

Does the entry fee include "disabled camera surveillance" like last year?

(AFAIK, active camera surveillance reduces the insurance fees. Last year, two human security guards were put in place to cover certain insurance requirements. The question seems to be: Will the security cameras be disabled again, like last year?)

Same procedure as last year. We hire two security guards, so the cameras can be disabled.

Why those wristband (Armband) as tickets?

See Wristbands.


Who should I contact if I want to become a Chaos Angel?

You can register yourself, as soon as the so called "Engelsystem" is up and running. See the Angel FAQ for further information.

What about hackcenter registration?

There will be no hackcenter registration for the 23C3. See Hackcenter for more information.

Who should we contact if we want to inform about our CCC supporting project (here: Pirate Party Germany) at a dedicated space on the 23C3?

See Contacts - General organizational requests got to 23c3-orga at cccv.de

But the CCC does not support any parties. Even if the party supports the CCC or one of the positions of the CCC. So no desk for the Pirate Party Germany.


Capture the Flag

Why is the event still not listed in the Fahrplan?

Printable version

Could you please create a (pdf) version of the Fahrplan layouted for printing?

I have done so. You can find it here (if someone who has access to the Fahrplan pages could put that link there as well, that would be highly appreciated). A bot exists that uploads the PDF version every two hours, so it should be up-to-date pretty much anytime.

Is there any add_to_favorites function (or planned?) for building one own Fahrplan?

I have thought about it, but I have not implemented it yet. Maybe next year. If you want to have a look at it yourself, here is the source.


See also Accommodation

Will there be a Gym for sleeping at again this year? How much will the fee be?

Yes, the Gym is available again this year. Have a look on that website for further information.

Will there be a place to deposit luggage (such as lockers) ?

We have the "Garderobe" (cloakroom) where you can deposit your luggage for which we cannot assume liability. Real lockers are in the nearby train station ("Alexanderplatz").

Can I camp outside of the conference center again this year?

Like last year: no.

It is possible for Chaos Angels to sleep in the Gym as from 25th December?

No, unfortunatly not. We open the gym Dec 26th, 6pm.

What do I have to bring when sleeping in the Gym? Sleepingbag? Iso-matress?

Both and probably a pair of earplugs.

Archived page - Impressum/Datenschutz