ICMP Tunneling (IP-over-ICMP)
Sometimes, you are at an airport, hotel, train station, … a access point is available, with a captive portal, and you start to feel not so well because you haven’t checked your mail in the last 6 hours.
But a access point that permit outgoing ICMP is available.
Links:
- ICMPTX (IP-over-ICMP) HOWTO
- Ping Tunnel
- ICMP Tunneling
- Using ICMP tunneling to steal Internet
- Simple icmp tunnel
- Malicious ICMP Tunneling: Defense Against the Vulnerability
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