I have a software which uses a TUN device to read datapackets, process something on them and send them out. Now I am asking myself, if it is possible, to send the "tun packets" without touching them. Over the TUN device I get IP Packets but over a RAW socket I just can send self defined transport layer packets... Is there a possibility to just take this packet from the TUN device and send it over a network card out?
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If anybody is interested in that topic, I wrote a witepaper to wrap up all needed information to use RAW-sockets: http://tuprints.ulb.tu-darmstadt.de/6243/1/TR-18.pdf
JUehV
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You should probably give some context for your link only answer. – Robert Moskal Nov 06 '17 at 19:45
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You didn't enable IP_HDRINCL socket option on the RAW socket? If IP_HDRINCL option is enabled, you can send self defined network layer packets.
Yu Lu
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