You should be prompted for your Geography network password — note that this is not necessarily the same password that you use for other UCL services. After supplying it, enter the command below, replacing <MACHINE> with the name of your favourite teaching workstation in Pearson 110a (see the link above for a list). Note that, since you're already in the network, you don't need to provide either your username or the ".geog.ucl.ac.uk" address on this second hop.