You can tell the connection has not been fully established. It will take a number of rounds for it to fully connect with all of the natural planetary interference on Felucia. It is also one of the reasons why your slicing of the network on Felucia was so difficult originally.
Right now the Tech is in the fifth round of establishing the connection. You can have Silten roll a Knowledge Technology to determine how much longer it may take to establish the connection. Your current efforts against the technician are actually setting his DC's each round for every round you try to prevent his efforts.
For example by re-opening the doors, I also made the assumption you would like to try to keep them open, so your 28 Use Computer check became his DC to re-close them. Since he failed to re-close them your 28 stands. Since he beat the DC you set for establishing the connection, he surmounted your efforts and you could continue to work against him this round.