16.08.2010, 23:34
(
Last edited by t33th4n; 16/08/2010 at 11:48 PM.
Reason: Additional information
)
Hello there, i have done extreme udp port research for the udp port forwarding issue on the belkin router, and found a VERY BIG BUG in the firmware. No joke, looke here:
[EDIT] Aw sorry, the cbt=7777 (wireshark users know this...)
Symptome: Every time an UDP packet sent to a port, the UDP packet in sequence will be delivered/forwarded with the +1 port number.
Example:
Client: 10.10.10.10:3000 -> 10.10.10.11:4000
Server: 10.10.10.11:4000 -> 10.10.10.10:3000
Client: 10.10.10.10:3000 -> 10.10.10.11:4000
Here comes the twist
Server: 10.10.10.11:4001 -> 10.10.10.10:3000
THIS IS A FIRMWARE BUG!!! Not a miracle, not an end user human error.
Belkin versions in affect (known by me from other posts)
F5D8230
F5D8231
F5D8232
F5D8233v4 (my router)
... No excuse from Belkin on this. Make it good!
[EDIT] Aw sorry, the cbt=7777 (wireshark users know this...)
Symptome: Every time an UDP packet sent to a port, the UDP packet in sequence will be delivered/forwarded with the +1 port number.
Example:
Client: 10.10.10.10:3000 -> 10.10.10.11:4000
Server: 10.10.10.11:4000 -> 10.10.10.10:3000
Client: 10.10.10.10:3000 -> 10.10.10.11:4000
Here comes the twist
Server: 10.10.10.11:4001 -> 10.10.10.10:3000
THIS IS A FIRMWARE BUG!!! Not a miracle, not an end user human error.
Belkin versions in affect (known by me from other posts)
F5D8230
F5D8231
F5D8232
F5D8233v4 (my router)
... No excuse from Belkin on this. Make it good!