Contributions

4 Contributions
  • Question

    Corrupted Kernel

    I was practicing exploiting linux executables with shellcode when after a while i things start breaking with Execle: Exec format error After reboot droplet didn't connect to internet. From dash board console I ran fo...
    2 By drs5ma Networking Linux Basics Ubuntu 16.04
  • Answer

    port scan externally reveals open port, from inside those ports are closed

    @jtittle Thanks for this in depth answer. Having only used iptables, ufw is uncomplicated :) I also found some information out ab…
    By drs5ma
  • Question

    port scan externally reveals open port, from inside those ports are closed

    port scanning the droplet internally (from the droplet) gives the expected PORT STATE SERVICE 22/tcp open ssh 3128/tcp open squid-http but scanning remote from the host shows a discrepancy: ``` PORT STA...
    Accepted Answer: @drs5ma On Ubuntu, ufw isn't configured by default, thus any port could show up as open, filtered, etc. You'd need to configure the firewall specifically to suit your needs if you only want specific ports open. Gener...
    3 By drs5ma Networking Firewall DigitalOcean Security Ubuntu 16.04
  • Answer

    How to fix the March 2017 Ubuntu DNS resolution issues

    I am having some trouble still. DNS works but is extremely slow (~1min), I was able to sudo apt-get update and sudo apt-get upgrade…
    By drs5ma