Technote FYI

  • Code
  • Sysadmin
  • After do-release-upgrade Name Resolver Stops Working

    Symptoms: after doing a big release upgrade on Ubuntu, the name resolution stops working. You can’t use domain names to reach websites or servers. The file /etc/resolv.conf shows the nameserver is set to 127.0.0.53… (read more)

    admin

    December 12, 2021
    Linux
  • December 18, 2018 Update

    This month, our “hobby” server took a big dump, and we said, “screw it, we need to install the ‘new’ server.” This “new” server is a few years old, but switching servers is such… (read more)

    admin

    December 18, 2018
    Linux
  • Root Shell Called Web Shell by oRb

    I came across this in the uploads. Missed it for a long time.  Should I start posting some other web shells I’ve collected? (read more)

    admin

    July 4, 2018
    Linux, PHP
  • Debian and Ubuntu Networking Configuration /etc/network/interfaces with a Static IP Address

    This is easy to find anywhere, and it’s here too. This one includes the dns-* lines that will be read by resolvconf(8). root@server:/etc/network# cat interfaces # This file describes the network interfaces available on… (read more)

    admin

    January 24, 2013
    Linux

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