ICS 35.040                          LITD 17

Reaffirmed 2022

NATIONAL FOREWORD

This Indian Standard (Part 4) which is identical with ISO/IEC 27033-4 : 2014 ‘Information technology - Security techniques - Network security - Part 4: Securing communications between networks using security gateways’ issued by the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) jointly was adopted by the Bureau of Indian Standards on the recommendations of the Information Systems Security and Biometrics Sectional Committee and approval of the Electronics and Information Technology Division Council.

The text of ISO/IEC Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are however not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.