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−	== '''Feaures in ASL 2.0''' ==	+	= Introduction =
		+	Atomic Secured Linux(tm), or "ASL" for short, is a Unified Security Suite addon for Linux(tm) systems designed to protect servers against zero day threats.  Unlike other expensive security "solutions" that pretend to achieve security through signature-based detection, known-vulnerability patching and other reactive methods, Atomic Secured Linux(tm) provides real proactive security. The only solution that protects both your applications and operating system, Atomic Secured Linux is essential for public-facing servers and shared-hosting environments.
−	Web Application Firewall, Special ClamAV rules, System Hardening tools, Hardened kernel with grsecurity, and firewall enhancements	+	And Atomic Secured Linux (ASL) is uniquely designed for beginners and experts alike.  You just install ASL onto your existing system and it does the work for you, plus you can try it for free!
−	ASL Modules	+	ASL works by proactively immunizing the system against whole classes of vulnerabilities, and combines security at all layers, from the firewall, to your applications and services, and all the way down to the kernel to provide the most complete multi-spectrum protection solution available for Linux servers today.  It helps to ensure that your system is secure and also compliant with commercial and government security standards. ASL is uniquely effective at addressing emerging threats posed by vulnerabilities in todays complex systems and applications, such as cloud and web hosting environments, multiuser systems, CRM's, ERPs, forums, shopping carts, Content Management systems, custom applications and more.
−		+
−	* custom code for system hardening	+
−	* denyhosts for ssh brute force attack detection	+	== '''Features in ASL''' ==
−	* mod_security as the web application layer firewall	+	* Web Application Firewall with Realtime Atomicorp/Gotroot.com rules
−	* ossec for event monitoring, file system integrity checking, and rootkit detection	+	* Highspeed Stateful firewall
−		+
−	* rkhunter for rootkit detection	+
−	* psmon process monitoring, to ensure security services are always running	+	* Attack Chain Disruption to prevent zero day attacks
−	* Web Application inventory module	+	* Network based Intrusion Prevention System
−	* Plesk Server Administrator web interface	+	* Host Based Intrusion Prevention for event monitoring, file system integrity checking, and rootkit protection
−	* SSH configuration validation	+	* Web Based Security Information Manager and Unified Threat Manager
−	* General security hardening (unnecessary services, etc)	+	* Vulnerability scanner and vulnerability repair and elimination system
−	* PHP configuration, checks for dangerous settings	+	* Realtime Malware Protection
−	* Apache configuration checks	+	* Hardened secure kernel to protect against rootkits
−	* Rule updater for Mod_security, GRsecurity, and the Application Inventory system	+	* Self Healing system for system, database and application errors
−		+	* Self Learning Least Privilege Role Based Access Control System
		+	* System Hardening tools
		+	* Stand Alone secure web GUI
−	== Using ASL 2.0 ==	+	* Malware uploader scanner
−	== '''Installation''' ==	+	* Brute force attack detection (Control Panels, FTP, SSH, Web applications, SMTP, POP, IMAP and more!)
−	[http://www.atomicorp.com/wiki/index.php/ASL_installation Installation Page]	+	* Just In Time Patching system: Automatic security rules to protect unpatched systems, and unpatched web applications.
		+	* Rootkit detection and prevention, including kernel level rootkits
−	== '''Quickstart Command Line Documentation''' ==	+	* Process monitoring watchdog, to ensure critical and security services are always running
−	1) Help	+	* Web Application inventory module
−	asl --help	+
−	Atomic Secured Linux	+	* Systems configuration validation (SSH, PHP and more)
−	asl [-cfhprtu]	+
−	--blacklist <ip> Add <ip> to Blacklist	+	* General security hardening (unnecessary services, etc)
−	--config  | -c Configure ASL settings	+
−	--check  | -ck Show list of updates	+
−	--disable-rule <id> Disable modsec rule by signature ID	+
−	--domain-blacklist <domain> Add <domain> to spam blacklist	+
−	--enable-rule <id> Re-enable modsec rule by signature ID	+
−	--fix    | -f Fix and Repair mode	+
−	--list    | -l List modules	+
−	--module  | -m <module> Run a specific module	+
−	--help    | -h Help message	+
−	--malware-blacklist <domain> Add <domain> to malware blacklist	+
−	--nocolor | -nc         Disable color	+
−	--permissions-check Check/Fix permissions on ASL dirs/files	+
−	--remove-blacklist <ip> Remove <ip> from Blacklist	+
−	--remove-domain-blacklist <domain>	+
−	Remove <domain> from spam Blacklist	+
−	--remove-malware-blacklist <domain>	+
−	Remove <domain> from malware Blacklist	+
−	--remove-whitelist <ip> Remove <ip> from Whitelist	+
−	--report-false-positive <path>Report false positive on <path>	+
−	--return  |-r                Prompt to continue	+
−	--scan | -s Scan mode	+
−	--show-alert <path>          Read an alert using <path>	+
−	--update  | -u Check for rule updates	+
−	--unblock <ip>  | -ub <IP> Unblock <ip> from active-response system	+
−	--version | -v | -V          Show version	+
−	--whitelist <ip> | -wl <IP> Add <ip> to Whitelist	+
		+	* PHP configuration, checks and fixes dangerous settings
−	2) Update the signature database	+	* Apache configuration checks and fixes
−	asl -u	+
−	2) Run a report	+	* DOS protection system
−	asl -r	+
−	3) Read the App Inventory DB	+	* Rule updater for Mod_security, GRsecurity, HIDS, Self Healing and the Application Inventory system
−	less /var/asl/data/webapp.db	+
		+	* Custom code for system hardening
		+	* Special ClamAV rules
		+	= Downloading ASL =
		+	== '''How can I get a copy of ASL?''' ==
−	'''Configuration'''	+	Please visit the [https://atomicorp.com/features/ Atomic Secured Linux product page].
−	ASL can be configured through /etc/asl/config, the following is a list of each setting and what it does:	+	== '''Can I try it out first?''' ==
−		+
−	# Authentication information	+
−	CONFIGURED=yes                                        # an internal setting, if its set to no you would (in theory) be forced through a configuration dialog	+
−	USERNAME="USERNAME"	+
−	PASSWORD="PASSWORD"	+
−	UPDATEPATH="www.atomicorp.com/channels/asl-bleeding/rules/"  # where the rule updater will grab updates	+
−	ASLHOME="/var/asl"                                    # internal variable, dont modify	+
−	# ASL general config	+	Absolutely! Just sign up for a [https://atomicorp.com/amember/signup/index/c/oMzRCoqd no risk and no obligation free 10 day trial here].
−	NOTIFY=yes                            # used to determine if modules that can send email notifications, will do so. Setting this to: no, will disable ALL email based notifications	+
−	EMAIL="scott@atomicrocketturtle.com"  # a master email address, settings below will use the $EMAIL variable to assign this address. Can be overridden per app.	+
−	ADMIN_USERS="SOMEUSER"                # who your administrative users are, this is used by modules like SSH to harden the system. Its highly recommended to define admin users, separated by whitespace.	+
−	# list of hosts separated by whitespace	+
−	IP_WHITELIST="127.0.0.1 10.10.10.10 10.10.10.11 10.10.10.12"    # IP's listed here will not be shunned by any of the IDS's (modsec, denyhosts, etc)	+
−	# webserver, custom	+
−	SYSTEM_TYPE="webserver"                # webserver, or custom right now. Used by ossec, and some other modules. Use webserver only for now.	+
−	# Kernel config	+	== '''Where is the ASL FAQ?''' ==
−	# Disable module_loading after the system has booted	+
−	VSERVER=no                            # probably will be deprecated	+
−	ALLOW_kmod_loading=no                  # ASL kernels can be set to disallow module loading to defend against kernel root kits. The default is to NOT allow module_loading after the system has booted.	+
−	# PSMOD config	+	[[ASL FAQ]] - Atomic Secured Linux Frequently Asked Questions (FAQ)
−	PSMON_ENABLED=yes                      # Turn PSMON and its checks On or Off	+
−	PSMON_EMAIL="$EMAIL"                  # who to email PSMON alerts to	+
−	PSMON_FROM="psmon@$HOSTNAME"          # From: line for PSMON	+
−	# OSSEC config
−	OSSEC_ENABLED=yes                      # Enable OSSEC
−	OSSEC_MODE="server"                    # options are client, server, local. Servers can accept OSSEC events from clients. Local is a standalone OSSEC system.
−	OSSEC_EMAIL="$EMAIL"                  # Where OSSEC email alerts go
−	OSSEC_SMTP_SERVER="localhost"          # System ossec sends email through
−	OSSEC_FROM="ossec@$HOSTNAME"          # From line for OSSEC alerts
−	OSSEC_SHUN_ENABLE_TIMEOUT=yes          # Enables expiration of OSSEC shunning events (see IP_WHITELIST above)
−	OSSEC_SHUN_TIME="600"                  # Time a shunned host will remain on the blacklist (10 minutes)
−	# MODSECURITY config	+	= '''Installing ASL''' =
−	MODSEC_ENABLED=yes                    # Turn MOD_SECURITY and its checks on/off	+
−	MODSEC_SERVERSIG="Apache"              # The "signature" the system will present to clients. The default is to send a client versions of the software installed. This helps against recon attacks	+
−	MODSEC_UPLOADDIR="/var/asl/data/suspicious" # Where suspicious uploaded files (POSTS) will be stored	+
−	MODSEC_KEEPFILES="RelevantOnly"        # Off, or RelevantOnly. Related to above, this tells the system to keep those files or not.	+
−	MODSEC_LOG404=no                 # not used yet. Application default is to log 404 errors in mod_security logs.	+
−	MODSEC_LOGTYPE="Serial"                # Serial or Concurrent. Serial sets modsecurity to log all events to one log file.	+
−	MODSEC_LOGFILE="modsec_audit.log"      # The log file for above.	+
−	MODSEC_LOGELEMENT="ABIFHZ"            # Elements of an event that will be logged	+
−	#A = audit log header (mandatory)	+
−	#B = request headers	+
−	#I = request body, except when multipart/form-data encoding is used	+
−	#F = final response headers	+
−	#H = audit log trailer	+
−	#Z = final boundary (mandatory)	+
−	MODSEC_REQMEMLIMIT="131072"            # Maximum size of the request body to keep in memory,  higher value requires more server memory, lower can impact disk I/O	+
−	MODSEC_DEBUGLOG=yes                    # not used yet (on by default: modsec_debug.log)	+
−	MODSEC_DATADIR="/var/asl/data/msa"    # top level dir used for mod_security internals. Must be read/write by the apache user	+
−	MODSEC_TMPDIR="/tmp"                  # Directory where temporary files are created	+
−	# Rule configuration starts here	+	[http://www.atomicorp.com/wiki/index.php/ASL_installation Installation Page]
−	MODSEC_RULES_POLICY=on                # enable/disable the HTTP Policy rules	+
−	MODSEC_RULES_ROBOTS=on                # enable/disable the Bad Robot ruls	+
−	MODSEC_RULES_GENERIC=on                # enable/disable generic attack rules	+
−	MODSEC_RULES_TROJAN=on                # enable/disable trojan detection rules	+
−	MODSEC_RULES_OUTBOUND=off              # enable/disable outbound rules (recommend this OFF for PSA environments)	+
−	MODSEC_RULES_MARKETING=off            # enable/disable marketing tracking rules (google, msn, yahoo bots)	+
−	MODSEC_RULES_LOCAL=on                  # enable/disable local rules	+
−		+
−		+
−		+
−		+
−	# PHP Functions	+
−	PHP_CHECKS=yes                        # (yes/no) enable/disable php checks	+
−	PHP_SAFE_MODE=yes                      # (yes/no) enable safe_mode checks. Turning safe_mode off exposes you to a number of threats, including remote file inclusion	+
−	ALLOW_dl=no                            # (yes/no) disables the dl() function. dl() would allow an attacker to load their own extension into php.	+
−	ALLOW_exec=no                          # (yes/no) disables exec() function. exec() allows an attacker to execute shell commands through php	+
−	ALLOW_leak=no                          # (yes/no) disables leak() function.	+
−	ALLOW_passthru=no                      # (yes/no) disable passthru(). This function allows an attacker to execute shell commands through php	+
−	ALLOW_pfsockopen=no                    # (yes/no) This function allows an attacker to open sockets, useful for spamming, remote inclusion, etc.	+
−	ALLOW_phpinfo=yes                      # (yes/no) recon attack. Allowed by default in psa environments. phpinfo can expose internal information used by attackers	+
−	ALLOW_popen=no                        # (yes/no) process open, allows attacker to execute commands on a system	+
−	ALLOW_posix_kill=no                    # (yes/no) kill processes owned by the apache user	+
−	ALLOW_posix_mkfifo=no                  # (yes/no) creates a special FIFO file which exists in the file system and acts as a bidirectional communication endpoint for processes	+
−	ALLOW_posix_setpgid=no                # (yes/no) Set process group id for job control	+
−	ALLOW_posix_setsid=no                  # (yes/no) Make the current process a session leader	+
−	ALLOW_posix_setuid=no                  # (yes/no) Set the UID of the current process. (Apache would have to run as root for this to work anyway)	+
−	ALLOW_proc_close=no                    # Close a process opened by proc_open()	+
−	ALLOW_proc_get_status=no              # Get information about a process opened by proc_open()	+
−	ALLOW_proc_nice=no                    # change nice level on process opened by proc_open	+
−	ALLOW_proc_open=no                    # execute commands	+
−	ALLOW_proc_terminate=no                # kill processes started by proc_open()	+
−	ALLOW_shell_exec=no                    # execute shell commands	+
−	ALLOW_show_source=no                  # Alias of highlight_file(), lets you view a php file. Exposes passwords, vulnerability recon, etc.	+
−	ALLOW_system=no                        # execute shell commands	+
−		+
−	# Denyhosts settings	+
−	# uses EMAIL for notifications	+
−	DENYHOSTS_ENABLED=yes	+
−	DENYHOSTS_EMAIL="$EMAIL"	+
−	DENYHOSTS_FROM="denyhosts@$HOSTNAME"	+
−	DENYHOSTS_SYSLOG=yes	+
−	DENYHOSTS_SHUN_TIME="4w"	+
−		+
−	# SSH	+
−	ALLOW_ssh_proto1=no	+
−	ALLOW_root_logins=no	+
−	DISABLE_strict_mode=no	+
−	DISABLE_ignore_rhosts=no	+
−	DISABLE_pubkey_authentication=no	+
−	ALLOW_password_authentication=no	+
−	DISABLE_privilege_separation=no	+
−		+
−	# Rkhunter settings	+
−	RKHUNTER_ENABLED=yes	+
−	RKHUNTER_EMAIL=$EMAIL	+
−		+
−	== Application Inventory ==	+
−		+
−	The application inventory module is designed to identify applications installed on the system by analysing it's source code. It can be a very CPU intense operation and is configured by default to run once per day. ASL supports configuring the Application Inventory to run either Daily, Weekly, or with the following setting in /etc/asl/config	+
−		+
−	APPINV_CRON="daily"	+
−		+
−	Valid settings for this field are:	+
−		+
−	"daily"	+
−		+
−	"weekly"	+
−		+
−	"off"	+
−	Changing this setting in /etc/asl/config does *NOT* require a policy update with "asl -s -f".
		+	== Configuration ==
		+	ASL can be configured through the ASL GUI.  Please see the [[ASL Configuration]] page for documentation.
−	== Mod_Security: Re-Enabling Rules ==	+	== '''Reporting False Positives''' ==
−	ASL supports the ability to disable rules through the web and command line interface. Once a rule has been disabled, it can be re-enabled by running the following:	+	See the [[Reporting False Positives]] page for details.
−	asl --enable-rule <rule id>	+	== ASL Web GUI Password Reset ==
−	example:	+	To reset your password, run this command:
−	asl --enable-rule 123456	+	/var/asl/bin/asl-web-passwd your_user_name
−	A full list of currently disabled rules is available in /etc/asl/disabled_signatures	+	Note: This utility is only valid post-installation.

---

Latest revision as of 09:32, 10 September 2020

Contents 1 Introduction 1.1 Features in ASL 2 Downloading ASL 2.1 How can I get a copy of ASL? 2.2 Can I try it out first? 2.3 Where is the ASL FAQ? 3 Installing ASL 3.1 Configuration 3.2 Reporting False Positives 3.3 ASL Web GUI Password Reset

[edit] Introduction

Atomic Secured Linux(tm), or "ASL" for short, is a Unified Security Suite addon for Linux(tm) systems designed to protect servers against zero day threats. Unlike other expensive security "solutions" that pretend to achieve security through signature-based detection, known-vulnerability patching and other reactive methods, Atomic Secured Linux(tm) provides real proactive security. The only solution that protects both your applications and operating system, Atomic Secured Linux is essential for public-facing servers and shared-hosting environments.

And Atomic Secured Linux (ASL) is uniquely designed for beginners and experts alike. You just install ASL onto your existing system and it does the work for you, plus you can try it for free!

ASL works by proactively immunizing the system against whole classes of vulnerabilities, and combines security at all layers, from the firewall, to your applications and services, and all the way down to the kernel to provide the most complete multi-spectrum protection solution available for Linux servers today. It helps to ensure that your system is secure and also compliant with commercial and government security standards. ASL is uniquely effective at addressing emerging threats posed by vulnerabilities in todays complex systems and applications, such as cloud and web hosting environments, multiuser systems, CRM's, ERPs, forums, shopping carts, Content Management systems, custom applications and more.

[edit] Features in ASL

• Web Application Firewall with Realtime Atomicorp/Gotroot.com rules

• Highspeed Stateful firewall

• Attack Chain Disruption to prevent zero day attacks

• Network based Intrusion Prevention System

• Host Based Intrusion Prevention for event monitoring, file system integrity checking, and rootkit protection

• Web Based Security Information Manager and Unified Threat Manager

• Vulnerability scanner and vulnerability repair and elimination system

• Realtime Malware Protection

• Hardened secure kernel to protect against rootkits

• Self Healing system for system, database and application errors

• Self Learning Least Privilege Role Based Access Control System

• System Hardening tools

• Stand Alone secure web GUI

• Malware uploader scanner

• Brute force attack detection (Control Panels, FTP, SSH, Web applications, SMTP, POP, IMAP and more!)

• Just In Time Patching system: Automatic security rules to protect unpatched systems, and unpatched web applications.

• Rootkit detection and prevention, including kernel level rootkits

• Process monitoring watchdog, to ensure critical and security services are always running

• Web Application inventory module

• Systems configuration validation (SSH, PHP and more)

• General security hardening (unnecessary services, etc)

• PHP configuration, checks and fixes dangerous settings

• Apache configuration checks and fixes

• DOS protection system

• Rule updater for Mod_security, GRsecurity, HIDS, Self Healing and the Application Inventory system

• Custom code for system hardening

• Special ClamAV rules

[edit] Downloading ASL

[edit] How can I get a copy of ASL?

Please visit the Atomic Secured Linux product page.

[edit] Can I try it out first?

Absolutely! Just sign up for a no risk and no obligation free 10 day trial here.

[edit] Where is the ASL FAQ?

ASL FAQ - Atomic Secured Linux Frequently Asked Questions (FAQ)

[edit] Installing ASL

Installation Page

[edit] Configuration

ASL can be configured through the ASL GUI. Please see the ASL Configuration page for documentation.

[edit] Reporting False Positives

See the Reporting False Positives page for details.

[edit] ASL Web GUI Password Reset

To reset your password, run this command:

/var/asl/bin/asl-web-passwd your_user_name

Note: This utility is only valid post-installation.