Delayed Binding Syn -> LB -> ack (sent back) TCP packets (sIP, sP, dIP dP, seq, ack, ....) Seq # is the # of the packet The ack the LB has to choose a "right to left 42 -> LB LB ->ACK 43 , seq -101(made up by LB) send me more of the header Back and forth Syn to info server 3 seq-42 Ack back to LB s seq 17 ack =43 Every packet going left to right : seq fiel is OK but the seq is wrong (it needs to have the seq # of the initial server seq # ) (change both direction) ack # ok but now the delta has be LB has to keep a table that maps the ID of the TCP stream and keep track of the deltas for the ack / seq to maintain the correct connections ..