ptr_clean-up

ptr_clean-up.sh

Description

This script validates and cleans up reverse DNS (PTR) zones in a BIND-style DNS setup.
It ensures that configuration and zone files are consistent, removes Microsoft DNS timestamps, canonicalizes the zones, and logs all actions.

---

Usage

./ptr_clean-up.sh <named-directory> <named.conf>

• <named-directory>: Path to directory containing config & zone files.
• <named.conf>: Main DNS configuration file.

Example:

./ptr_clean-up.sh /etc/named named.conf

---

Requirements

• POSIX shell (/bin/sh)
• Tools:
  • named-checkzone (bind-utils)
  • awk, egrep, grep, sed

---

Input / Output

• Input:

  • A named.conf file with reverse DNS zone definitions:

    zone "<zone-name>" { type master; file "<file-name>"; };
    

    <zone-name> must equal <file-name>.
  • Corresponding PTR zone files.

• Output:

  • Canonicalized zone files: <zonefile>_<suffix>
  • Cleaned files (with Microsoft DNS timestamps removed).
  • Log file: ptr_clean-up_<timestamp>.log

---

Notes

• Cleans Microsoft DNS [AGE:xxxxxxx] timestamps if present.
• Verifies directory and configuration file exist before processing.
• Intended for auditing and migration of PTR zones.

---

License

This script is covered under the repository’s main MIT License.