Time_Skew_Fix

Fix time skew issues in Kerberos environments by syncing your system time with a Domain Controller using systemd-timesyncd and ntpdate.

This script is especially useful in penetration testing labs or Active Directory environments where Kerberos authentication fails due to clock drift (krb_ap_err_skew(clock skew too great)).

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📦 Installation

1. 📝 Copy the script to /usr/local/bin

This is the standard location for custom system-wide scripts:

sudo cp Time_Skew_Fix.sh /usr/local/bin/Time_Skew_Fix.sh

2. ✅ Make it executable

sudo chmod +x /usr/local/bin/Time_Skew_Fix.sh

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🚀 Usage

Run the script with the IP address of your Domain Controller:

sudo Time_Skew_Fix.sh <domain_controller_ip>

✅ Example:

sudo Time_Skew_Fix.sh 10.129.XX.XX

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⚙️ What It Does

• Installs required time synchronization packages
• Enables and configures systemd-timesyncd
• Adds the Domain Controller as the NTP server
• Forces a manual sync using ntpdate
• Prints the time sync status

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📄 Requirements

Make sure the following packages are installed:

• systemd-timesyncd
• ntpdate
• util-linux

(Optional) You can run the included requirements.sh script to install them automatically:

sudo ./requirements.sh

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📜 License

MIT – use freely, modify openly, share proudly.