Casper Dik <casperat_private> writes: > > >2) A socket in LISTEN state is not initiating a connection attempt, so > > if it receives a SYN-only packet from itself, it *must* be a > > forgery. A self-connect would cause the socket to no longer be in > > LISTEN state before the SYN-only packet arrives. There's no point > > in sending a RST in this case, since we'd just be sending it to > > ourselves. > > I'm not sure that that is the case. Multiple sockets may be bound to > the same port number. One of the others bound to the port may > initiate a connection from the same port number. If the source and destination addresses are the same, then it *can't* be another socket on the same port connecting. It's just not possible. > You need to reply with a SYN_ACK packet and then you'll RST in reply to > that. The second part is merely an optimization, but it is correct.
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 13:33:06 PDT