Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
punchVPN-dansk
Search
Claus Lensbøl
May 13, 2013
Programming
290
1
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
punchVPN-dansk
Danish walk-through of the punchVPN program
Claus Lensbøl
May 13, 2013
Other Decks in Programming
See All in Programming
golang-bob.pdf
iwatsukayura
0
130
残高管理から台帳サービスへの進化
artoy
1
210
見えないものを探る要求要件定義に必要な基本的思考 / invisible-requirement-thinking
minodriven
15
8.6k
3回つくってわかった、 定期実行ジョブ基盤の本質情報
takai
0
530
コードレビューのボトルネックを"する側"と"される側"の両面から解消する
yub0n
2
1.6k
AI主導のプログラミング学習アプリを作ってみた
econanringo
0
180
RAG の “R” を Swift で覗いてみる 〜「意味から探す」検索の仕組み〜
nao_randd
0
170
ChromeでローカルLLM
ryu1013
0
150
[2026-09-26]空論ジェネリックプロセス~テスト資産とAIで紡ぐ、再現可能なパフォーマンスチューニングの話~
tosite
0
270
HTML-in-Canvasで作る未来のWeb UI表現
clockmaker
5
5.2k
PumaからFalconに移行したRailsアプリケーションでの実践
falcon8823
0
180
The Rails Doctrine Decade
koic
2
600
Featured
See All Featured
Google's AI Overviews - The New Search
badams
0
1.6k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
333
23k
The State of eCommerce SEO: How to Win in Today's Products SERPs - #SEOweek
aleyda
2
12k
The Mindset for Success: Future Career Progression
greggifford
PRO
0
540
Bridging the Design Gap: How Collaborative Modelling removes blockers to flow between stakeholders and teams @FastFlow conf
baasie
0
730
The browser strikes back
jonoalderson
0
1.8k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
141
35k
Lightning talk: Run Django tests with GitHub Actions
sabderemane
0
300
Getting science done with accelerated Python computing platforms
jacobtomlinson
2
540
Organizational Design Perspectives: An Ontology of Organizational Design Elements
kimpetersen
PRO
1
850
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
Winning Ecommerce Organic Search in an AI Era - #searchnstuff2025
aleyda
2
2.2k
Transcript
punchVPN p2p VPN tunneler bag NAT
Facts • Klient - Python3.2 • Server - Python2.7 Kommende
Win32+OSX+UNIX support
Hvad skal det til for? • Sikkerhed • Anonymitet •
Direkte forbindelse
✘ Skidt måde at snakke sammen på A B 3.
part ☠ Forbindelse via 3. part Krypteret eller ukrypteret
✔ God måde at snakke sammen på A B 3.
part ☠ Direkte krypteret forbindelse udenom 3. part
Verdensbillede A B punch VPN Server Internet FW FW
Klient A -> Server A B punch VPN Server Internet
FW FW 1.
Klient B -> Server A B punch VPN Server Internet
FW FW 1. 2.
Klient A <-> Klient B A B punch VPN Server
Internet FW FW 1. 2. 3.
Forbindelsesmetoder A B punch VPN Server Internet FW FW 1.
2. 3. NAT-PMP UPnP-IGD UDP-HolePunch
Hvem kan forbinde? NAT-PMP UPnP-IGD Direct mapping Random mapping NAT-PMP
✔ ✔ ✔ ✔ UPnP-IGD ✔ ✔ ✔ ✔ Direct mapping ✔ ✔ ✔ ✘ Random mapping ✔ ✔ ✘ ✘
[code] punchVPNd/punchVPNd.py:108
NAT-PMP Dynamisk firewall
Hvordan virker det? • Simpel protokol • Apple-Bonjour
Bed om den eksterne IP adresse Data der skal sendes:
0b0000000000000000 Modtaget data: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Vers = 0 | OP = 128 + 0 | Result Code (net byte order) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Seconds Since Start of Epoch (in network byte order) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | External IPv4 Address (a.b.c.d) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Revisionerne, det nye def create_payload(self, local_port, external_port, lifetime): return pack('>2B3HI',
0, 1, 0, local_port, external_port, lifetime)
[code] natPMP/natPMP.py:49 natPMP/natPMP.py:70
Greenlets og Gevent Micro threads og long polling
Greenlets • Micro Threading • God scheduling
Gevent • Modul på libevent • Bruger Greenlets • Monkey-patcher
Python • Webserver
Long polling • Lange HTTP(S) kald • Næsten en socket
while(1): new_request_event.wait() if me.peer: msg = {'status': 'READY'} msg = json.dumps(msg) return msg new_request_event.set() new_request_event.clear()
[code] punchVPNd/punchVPNd.py:71 punchVPNd/punchVPNd.py:132
Et eksempel
Server og klient Hvordan hænger det sammen
JSON • Nemt at udvide • Ensartet syntax { "me.VPNaddr"
: "169.254.45.221", "me.mode" : "p2p", "peer.VPNaddr" : "169.254.45.222", "peer.ip" : "130.225.204.238", "peer.lport" : 15544, "status" : "READY" }
Demonstration Ellers er det jo bare en masse ord
UDP hole punching
[demo]
Spørgsmål? • https://github.com/cmol/punchVPN/ • https://twitter.com/lensboel • https://speakerdeck.com/cmol/punchvpn- dansk