udpfwd udpfwd is a userspace UDP relay.
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udpfwd Tags

userspace port listener userspace SNAT UDP relay SNAT DNAT

udpfwd Description

udpfwd is a userspace UDP relay. udpfwd is a userspace UDP relay.Usage:./udpfwd < dest_ip > < dest_port > < listen_port >The relay listens for packets received on listen_port, changes their source IPs to the IP of the local host ("SNAT"), and forwards them to the destination (dest_ip:dest_port) from a randomly chosen local send_port. The selection of send_port is made on reception of the first packet from a given source_ip:source_port; once chosen, the source_ip:source_port:send_port triplet is unique, allowing for connection tracking. Therefore, when a packet is received on send_port, its destination is changed to source_ip:source_port ("DNAT"), and forwarded onwards.Effectively, this is a userspace SNAT/DNAT.Schematic: +----------------+ | a_out:| |:listen b_out:| | c_out:| +----------------+Warning:This relay has no authentication or authorization mechanisms, nor does it in any way obscure or encrypt the forwarded packets. You have been warned.

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