Allowing Debian Packages To Execute Scripts When Upgrading
If you have mounted /tmp noexec, aptitude updates may fail. Here’s some possible solutions.
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How to Use SSH Tunneling to Access A Subversion Server Behind NAT
How to use reverse ssh tunnels to access a subversion or git repository behind NAT.
Firewalling Bridged VMs Using Libvirt’s Nwfilter Driver
Using libvirt’s nwfilter driver, you can create simple network filtering rules in XML to firewall your virtual machines.