Sysadmin TIPS



Trick 5: SSH back door

Many times I’ll be at a site where I need remote support from someone who is blocked on the outside by a company firewall. Few people realize that if you can get out to the world through a firewall, then it is relatively easy to open a hole so that the world can come into you.

In its crudest form, this is called "poking a hole in the firewall." I’ll call it an SSH back door. To use it, you’ll need a machine on the Internet that you can use as an intermediary.


sumber :
ibm.com

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