[et_pb_section fb_built=”1″ admin_label=”Header” _builder_version=”4.23.2″ _module_preset=”default” custom_padding=”0px||0px||true|false” collapsed=”on” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row column_structure=”1_3,2_3″ use_custom_gutter=”on” gutter_width=”1″ make_equal=”on” _builder_version=”4.27.4″ _module_preset=”default” width=”100%” max_width=”none” custom_padding=”0px||0px||true|false” hover_enabled=”0″ locked=”off” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″][et_pb_column type=”1_3″ _builder_version=”4.27.4″ _module_preset=”default” background_image=”https:\/\/www.load.se\/wp-content\/uploads\/2025\/12\/AIX_Colour_transp.png” custom_padding=”|0px|||false|false” hover_enabled=”0″ global_colors_info=”{}” theme_builder_area=”post_content” title_text=”AIX_Colour_transp” sticky_enabled=”0″][\/et_pb_column][et_pb_column type=”2_3″ _builder_version=”4.27.4″ _module_preset=”default” background_color=”gcid-c99e8569-e73a-4475-92a4-a1a7fec8f2cc” use_background_color_gradient=”on” background_color_gradient_type=”conic” background_color_gradient_direction=”140deg” background_color_gradient_stops=”rgba(255,255,255,0) 0%|rgba(255,255,255,0) 50%|rgba(255,255,255,0.2) 100%” custom_padding=”10%|10%|10%|10%|true|true” global_colors_info=”{%22gcid-c99e8569-e73a-4475-92a4-a1a7fec8f2cc%22:%91%22background_color%22%93}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_text_color=”#FFFFFF” header_font_size=”32px” header_line_height=”1.2em” hover_enabled=”0″ header_font_size_tablet=”40px” header_font_size_phone=”24px” header_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n
[\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_text_color=”#FFFFFF” header_5_font=”–et_global_heading_font|300|||||||” header_5_text_color=”#FFFFFF” header_5_font_size=”14px” header_5_line_height=”1.6em” background_layout=”dark” max_width=”600px” custom_padding=”||32px|||” hover_enabled=”0″ header_5_font_size_tablet=”16px” header_5_font_size_phone=”14px” header_5_font_size_last_edited=”on|desktop” global_colors_info=”{%22gcid-secondary-color%22:%91%22header_text_color%22%93}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n
Hardening AIX is not about a single setting or a magic command. It is a holistic approach where the aim is to reduce the attack surface, strengthen access controls and ensure that the system behaves in a predictable and verifiable manner. IBM’s guidelines for AIX 7.3 describe a number of core principles that all organizations should have in place \u2013 regardless of whether the environment is small or consists of hundreds of servers. <\/p>\n
Here is a summary of the most important concepts and principles.<\/p>\n
[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”Project Info” _builder_version=”4.27.4″ _module_preset=”default” background_color=”#FFFFFF” locked=”off” collapsed=”on” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row column_structure=”1_3,2_3″ _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”1_3″ _builder_version=”4.23.2″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font=”–et_global_heading_font|300|||||||” header_2_font=”–et_global_heading_font|300|||||||” header_2_text_color=”gcid-secondary-color” header_2_font_size=”32px” header_2_line_height=”1.3em” custom_margin=”|-9px|10px||false|false” hover_enabled=”0″ header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” global_colors_info=”{%22gcid-primary-color%22:%91%22text_text_color%22%93,%22gcid-secondary-color%22:%91%22header_text_color%22,%22header_2_text_color%22%93}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n
[\/et_pb_text][et_pb_divider _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_divider][et_pb_blurb title=”AIX 7.3 Security Hardening” use_icon=”on” font_icon=”||divi||400″ icon_color=”gcid-secondary-color” icon_placement=”left” _builder_version=”4.27.4″ _module_preset=”default” link_option_url=”https:\/\/www.ibm.com\/docs\/en\/aix\/7.3.0?topic=expert-aix-security-security-hardening” link_option_url_new_window=”on” hover_enabled=”0″ global_colors_info=”{%22gcid-secondary-color%22:%91%22icon_color%22%93}” theme_builder_area=”post_content” url_new_window=”on” sticky_enabled=”0″]<\/p>\n
Would you like to delve into the details? IBM’s own documentation goes through all the security features in AIX 7.3 \u2013 from policies and profiles to RBAC, network security and system integrity. Perfect for those who want to work in a structured way with hardening. <\/p>\n
[\/et_pb_blurb][\/et_pb_column][et_pb_column type=”2_3″ _builder_version=”4.23.2″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_4_font=”Space Grotesk|500|||||||” header_4_text_color=”#000000″ header_4_font_size=”24px” header_4_line_height=”1.5em” custom_margin=”||0px||false|false” hover_enabled=”0″ header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n
[\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” hover_enabled=”0″ text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n
The less the system exposes, the harder it becomes to attack.<\/p>\n
Key principles:<\/strong><\/p>\n Uninstall or disable services you do not use.<\/p>\n<\/li>\n Close ports and protocols that are not needed.<\/p>\n<\/li>\n Restrict access to remote administration and logins.<\/p>\n<\/li>\n<\/ul>\n This is often the most effective and at the same time simplest form of hardening.<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_4_font=”Space Grotesk|500|||||||” header_4_text_color=”#000000″ header_4_font_size=”24px” header_4_line_height=”1.5em” custom_margin=”||0px||false|false” hover_enabled=”0″ header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” hover_enabled=”0″ text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|phone” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n AIX offers advanced mechanisms to control who can do what.<\/p>\n Important measures:<\/strong><\/p>\n Activate and configure RBAC (Role-Based Access Control)<\/strong>.<\/p>\n<\/li>\n Implement minimal privileges<\/strong> \u2013 users should only have exactly what they need.<\/p>\n<\/li>\n Use secure password policies and lockout rules.<\/p>\n<\/li>\n Log and monitor all changes in permissions.<\/p>\n<\/li>\n<\/ul>\n RBAC is particularly powerful for avoiding overuse of root.<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_4_font=”Space Grotesk|500|||||||” header_4_text_color=”#000000″ header_4_font_size=”24px” header_4_line_height=”1.5em” custom_margin=”||0px||false|false” hover_enabled=”0″ header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” hover_enabled=”0″ text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n A large part of AIX security is about ensuring that files cannot be manipulated.<\/p>\n Basic steps:<\/strong><\/p>\n Use trusted computing base (TCB)<\/strong> to verify the integrity of the system.<\/p>\n<\/li>\n Run regular checks with Secure directories such as TCB is a unique and strong mechanism that distinguishes AIX from many other UNIX variants.<\/p>\n [\/et_pb_text][et_pb_image src=”https:\/\/www.load.se\/wp-content\/uploads\/2025\/10\/Power11Blue.png” title_text=”Power11Blue” _builder_version=”4.27.4″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″][\/et_pb_image][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_4_font=”Space Grotesk|500|||||||” header_4_text_color=”#000000″ header_4_font_size=”24px” header_4_line_height=”1.5em” custom_margin=”||0px||false|false” hover_enabled=”0″ header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” hover_enabled=”0″ text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n AIX has in-depth features for controlling network behavior.<\/p>\n Focus on:<\/p>\n Configure TCP\/IP-security tunables<\/strong>.<\/p>\n<\/li>\n Restrict ICMP, routing functions and unnecessary network services.<\/p>\n<\/li>\n Ensure correct use of SSH with modern encryption algorithms.<\/p>\n<\/li>\n<\/ul>\n This reduces the risks of network-related intrusions.<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_4_font=”Space Grotesk|500|||||||” header_4_text_color=”#000000″ header_4_font_size=”24px” header_4_line_height=”1.5em” custom_margin=”||0px||false|false” hover_enabled=”0″ header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” hover_enabled=”0″ text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n A hardened system that is not maintained stops being hardened.<\/p>\n Guidelines:<\/strong><\/p>\n Keep AIX Technology Levels and Service Packs updated.<\/p>\n<\/li>\n Use Implement recurring security audits and checks.<\/p>\n<\/li>\n<\/ul>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_4_font=”Space Grotesk|500|||||||” header_4_text_color=”#000000″ header_4_font_size=”24px” header_4_line_height=”1.5em” custom_margin=”||0px||false|false” hover_enabled=”0″ header_4_font_size_tablet=”16px” header_4_font_size_phone=”15px” header_4_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” hover_enabled=”0″ text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n Detecting problems quickly is as important as preventing them.<\/p>\n AIX offers:<\/p>\n Audit subsystem (AIX Audit).<\/p>\n<\/li>\n System logging (syslogd \/ rsyslog).<\/p>\n<\/li>\n FIM (File Integrity Monitoring) through TCB.<\/p>\n<\/li>\n<\/ul>\n A good hardening strategy always includes correct and centralized log management.<\/p>\n [\/et_pb_text][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” hover_enabled=”0″ text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]<\/p>\n Hardening AIX is about discipline, consistency and following proven principles. By eliminating unnecessary services, strengthening access controls, protecting system files and actively maintaining the environment, you create a robust, hard-to-breach platform that resists both external and internal threats. <\/p>\n [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_3,2_3″ _builder_version=”4.27.4″ _module_preset=”default” custom_margin=”100px||||false|false” custom_margin_tablet=”60px||||false|false” custom_margin_phone=”60px||||false|false” custom_margin_last_edited=”on|phone” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”1_3″ _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_2_font=”Space Grotesk|500|||||||” header_2_text_color=”#000000″ header_2_font_size=”52px” header_2_line_height=”1.3em” custom_margin=”||10px||false|false” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=”2_3″ _builder_version=”4.23.2″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n As an IBM Platinum Partner, LOAD helps Swedish companies implement solutions that match their needs for performance, security, and easy operation. [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_3,2_3″ _builder_version=”4.27.4″ _module_preset=”default” custom_margin=”100px||||false|false” custom_margin_tablet=”60px||||false|false” custom_margin_phone=”60px||||false|false” custom_margin_last_edited=”on|phone” global_module=”644″ global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”1_3″ _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” header_2_font=”Space Grotesk|500|||||||” header_2_text_color=”#000000″ header_2_font_size=”52px” header_2_line_height=”1.3em” custom_margin=”||10px||false|false” header_2_font_size_tablet=”32px” header_2_font_size_phone=”20px” header_2_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=”2_3″ _builder_version=”4.23.2″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.27.4″ _module_preset=”_initial” text_font_size=”15px” text_line_height=”1.8em” text_font_size_tablet=”15px” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n As an IBM Platinum Partner, LOAD helps Swedish companies implement solutions that match their needs for performance, security, and easy operation. [\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" Hardening AIXThe basic principles behind a more secure UNIX system Hardening AIX is not about a single setting or a magic command. It is a holistic approach where the aim is to reduce the attack surface, strengthen access controls and ensure that the system behaves in a predictable and verifiable manner. IBM’s guidelines for AIX […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-1961","page","type-page","status-publish","hentry"],"yoast_head":"\n\n
Strengthen authentication and access control<\/h1>\n
\n
Protect system files and file permissions<\/h1>\n
\n
tcbck<\/code>.<\/p>\n<\/li>\n\/etc<\/code>, \/usr<\/code> and sensitive binaries.<\/p>\n<\/li>\n<\/ul>\nStrengthen the security of the network stack<\/h1>\n
\n
Patching and revision are part of hardening<\/h1>\n
\n
oslevel<\/code> and instfix<\/code> to check the version status.<\/p>\n<\/li>\nMonitoring and logging \u2013 the heart of security work<\/h1>\n
\n
Why LOAD<\/h1>\n
We offer consulting, design, implementation, and proactive support \u2013 so you can focus on business instead of infrastructure.<\/p>\nWhy LOAD<\/h1>\n
We offer consulting, design, implementation, and proactive support \u2013 so you can focus on business instead of infrastructure.<\/p>\n