jetlib.sec » Full Disclosure » Circumventing NAT via UDP hole punching.

Feeds

133122 items (0 unread) in 27 feeds

• 1337day (was: Inj3ct0r, 1337db)
• OSVDB Vulnerabilities
• Exploit-DB
• SecurityFocus Vulnerabilities
• Bugtraq
• Full Disclosure
• XSSed
• Packet Storm Security Headlines
• Packet Storm Security Advisories
• Packet Storm Security Exploits
• Packet Storm Security Recent Files
• Packet Storm Security Tools
• Packet Storm Security Misc. Files
• Sophos security news
• Sophos product advisories
• Penetration Testing
• SecuriTeam
• BackTrack Linux Forums
• Threatpost
• SecDocs
• carnal0wnage.attackresearch.com
• Carnal0wnage
• Kernel Fun
• Darknet
• The Exploitant
• Hack a Day
• Wirevolution

Full Disclosure

• February 22, 2012
• 

  Circumventing NAT via UDP hole punching.

  Posted: February 22nd, 2012, 7:37am PST

  Tags:   

  Posted by Adam Behnke on Feb 22

  A new write up at InfoSec Institute on circumventing NAT. The process works
  in the following way. We assume that both the systems A and B know the IP
  address of C.
  
  a) Both A and B send UDP packets to the host C. As the packets pass through
  their NAT's, the NAT's rewrite the source IP address to its globally
  reachable IP address. It may also rewrite the source port number, in which
  case UDP hole punching would be almost impossible.
  
  b)...