This research includes an amendment to a TCP-Peach+ protocol to improve the performance of the TCP over satellite links, Where the protocol has been proposed based on splitting the connecting path between the source and target, in order to obtain an adjusted protocol of the kind of Satellite transport protocol (STP) specialized in the space segment only, and that by proposing a new algorithm for this protocol which is located under the satellite transport layer (STL). We have focused in our research on a comparison between the proposed protocol and TCP-Peach+ protocol.