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Phil Sutter authored
Upon receipt of SYNACK from the server, ipt_SYNPROXY first sends back an ACK to finish the server handshake, then calls nf_ct_seqadj_init() to initiate sequence number adjustment of forwarded packets to the client and finally sends a window update to the client to unblock it's TX queue. Since synproxy_send_client_ack() does not set synproxy_send_tcp()'s nfct parameter, no sequence number adjustment happens and the client receives the window update with incorrect sequence number. Depending on client TCP implementation, this leads to a significant delay (until a window probe is being sent). Signed-off-by:
Phil Sutter <phil@nwl.cc> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
3c16241c