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Remote Access


A summary of remote access methods for computing resources.


Chemistry Department web proxy service


The Department runs a proxy server which can be used for off-site access to webpages that are otherwise only accessible from computers that are either within the University or within the Department.


Proxy service for journal access


The University Library offers a proxy server which can be used for off-site access to some journals for which the University has a subscription.


VPNs


Virtual Private Networks (VPNs) enable IP traffic to travel securely over a public TCP/IP network (e.g. the Internet) by encrypting all traffic from one network to another. Effectively you get an IP address on the private network.


Information about the Departmental VPN service, including downloadable installer packages, is available.


The University Computing Service provide a VPN Service which will get you an IP address in cam.ac.uk but most chemists will probably want to use the Chemistry service as that gives you more access to journals.


ssh access via a Bastion host


Our department firewall blocks most incoming traffic, but ssh is allowed to the Bastion Host.


There's documentation for simple use of SSH (Secure SHell), SFTP (Secure FTP) and SCP (Secure Copy).


If you regularly access particular machines by SSH (your desktop, for example), having this in your SSH config file (~/.ssh/config) should save you some bother: (The configuration tells ssh when connecting to myworkmachine.ch.private.cam.ac.uk to first open an ssh connection to citadel.ch.cam.ac.uk and route the connection to myworkmachine over the connection to citadel.)



Host myworkmachine.ch.private.cam.ac.uk
    User CRSID
    ProxyCommand ssh -l CRSID citadel.ch.cam.ac.uk -W myworkmachine.ch.private.cam.ac.uk:22


Remote Access to Windows Desktop


SSH Tunnel Windows Terminal Services/Remote Desktop



ssh -CL 3390:renown.ch.cam.ac.uk:3389 CRSID@citadel.ch.cam.ac.uk
rdesktop localhost:3390 &


Remote access to Linux desktop


More Technical Tricks You Can Play With ssh Tunnels


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