3 ms·
Given the definition[1] of the echo protocol works on UDP you could potentially spoof the address to be coming from another echo server and have packets going b
by placeybordeaux 11y ago
Given the definition[1] of the echo protocol works on UDP you could potentially spoof the address to be coming from another echo server and have packets going back and forth indefiniately, correct?
https://tools.ietf.org/html/rfc862 https://tools.ietf.org/html/rfc862
- flashman 11y agoDoesn't spoofing the IP portion of UDP require a compliant network provider? I thought most upstream links would look at a spoofed packet and say, "Hey... no." Not that this makes it impossible, just more difficult.
- codezero 11y agoThis is the premise of an old bit of code called Pepsi.c. I recall having juvenile fun with it. Many Cisco routers at the time had these ports open. http://www.hoobie.net/security/exploits/hacking/pepsi.c http://www.hoobie.net/security/exploits/hacking/pepsi.c
- fennecfoxen 11y agoSounds like PingFS. https://github.com/yarrick/pingfs https://github.com/yarrick/pingfs