Modifying a Policy

Constraints

The enterprise, premium, WTP, or container edition is enabled.

Accessing the Policies Page

1. Log in to the management console.
2. Click in the upper left corner of the page, select a region, and choose Security > Host Security Service.

3. In the navigation tree on the left, choose Security Operations > Policies to check the displayed policy groups. For more information, see Table 1.
   

   • tenant_linux_container_default_policy_group is the default Linux policy group of the container edition. This policy group can only be viewed, and cannot be copied or deleted.
   • tenant_linux_enterprise_default_policy_group is the default Linux policy group of the enterprise edition. This policy group can only be viewed, and cannot be copied or deleted.
   • tenant_windows_enterprise_default_policy_group is the default Windows policy group of the enterprise edition. This policy group can only be viewed, and cannot be copied or deleted.
   • tenant_linux_premium_default_policy_group is the default Linux policy group of the premium edition. You can create a policy group by copying this default group and modify the copy.
   • tenant_windows_premium_default_policy_group is the default Windows policy group of the premium edition. You can create a policy group by copying this default group and modify the copy.
   • wtp_ServerName is a WTP edition policy group. It is generated by default when WTP is enabled for a server.
   • To refresh the list, click in the upper right corner.
   • To view details about the servers associated with a policy group, click the number in the Servers column of the group.

   Table 1 Policy group parameters

   Parameter	Description
   Policy Group	Name of a policy group
   ID	Unique ID of a policy group
   Description	Description of a policy group
   Supported Version	Versions of HSS supported by the policy group
   Supported OS	OS supported by the policy.
   Servers	Number of servers associated with the policy

4. Click the name of the policy group to access the policy detail list. You can modify the policy by clicking its name.

Asset Discovery

1. Click Asset Discovery.
2. On the displayed page, modify the settings as required. For more information, see Table 2.

   Table 2 Parameter description

   Parameter	Description
   Scan Time	Fixed time for automatic assets scan. Accounts: Linux accounts are automatically checked every hour, and Windows accounts are checked in real time. Open ports are automatically checked every 30 seconds. Processes are automatically checked every hour. Installed software is automatically checked once a day. Auto-startup items are automatically checked every hour.
   Software Scanned	Software name. A name can contain a maximum of 5,000 characters without any space. Use commas (,) to separate software names. If this parameter is not specified, information about all installed software will be retrieved as its value.
   Software Scanned	Path for software search. This parameter is not required for Windows servers.
   Web Directory to Be Scanned	Specifies a web directory to be scanned.
   Web Directory Scan Depth	Specifies the level depth for web directory scanning.

3. Confirm the information and click OK.

Weak Password Scan

Weak passwords are not attributed to a certain type of vulnerabilities, but they bring no less security risks than any type of vulnerabilities. Data and programs will become insecure if their passwords are cracked.

HSS proactively detects the accounts using weak passwords and generates alarms for the accounts. You can also add a password that may have been leaked to the weak password list to prevent server accounts from using the password.

1. Click Weak Password Detection.
2. In the Policy Settings area, modify the settings as required. For more information, see Table 3.

   Table 3 Parameter description

   Parameter	Description
   Scan Time	Time point when detections are performed. It can be accurate to the minute.
   Random Deviation Time (s)	Random deviation time of the weak password based on Scan Time. The value range is 0 to 7200s.
   Scan Days	Days in a week when weak passwords are scanned. You can select one or more days.
   Detection Break Time (ms)	Interval between the checks of two accounts. The value range is 0 to 2,000. For example, if this parameter is set to 50, the system checks /bin/ls every 50 milliseconds.
   User-defined Weak Passwords	You can add a password that may have been leaked to this weak password text box to prevent server accounts from using the password. Enter only one weak password per line. Up to 300 weak passwords can be added.

3. Confirm the information and click OK.

Configuration Check

1. Click Configuration Check.
2. On the Configure Check, modify the policy.

   Table 4 Parameter description

   Parameter	Description
   Scan Time	Time point when detections are performed. It can be accurate to the minute.
   Random Deviation Time (Seconds)	Random deviation time of the system detection. The value ranges from 0 to 7,200s.
   Scan Days	Day in a week when a detection is performed. You can select any days from Monday to Sunday.
   System Default Baseline Library	The detection baseline that has been configured in the system. You only need to select the baseline to be scanned.

3. Select the baseline to be detected or customize a baseline.
4. Confirm the information and click OK.

Web Shell Detection

If User-defined Scan Paths is not specified, the website paths in your assets are scanned by default. If User-defined Scan Paths is specified, only the specified paths are scanned.

1. Click Web Shell Detection.
2. On the Web Shell Detection page, modify the settings as required. For more information, see Table 5.

   Table 5 Parameter description

   Parameter	Description
   Scan Time	Time point when detections are performed. It can be accurate to the minute.
   Random Deviation Time (Seconds)	Random deviation time. The value ranges from 0 to 7,200s.
   Scan Days	Days in a week when web shells are scanned. You can select one or more days.
   User-defined Scan Paths	Web paths to be scanned. A file path must: Start with a slash (/) and end with no slashes (/). Occupy a separate line and cannot contain spaces.
   Monitored Files Types	Extensions of files to be checked. Valid values include jsp, jspx, jspf, php, php5, php4.

3. Confirm the information and click OK.

File Protection

1. Click File Protection.
2. On the File Protection page, modify the policy. For more information, see Table 6.

   Table 6 Parameter description

   Parameter	Description
   File Privilege Escalation	Detects privilege escalation. : enable : disable Ignored File Path: Files to be ignored. Start the path with a slash (/) and do not end it with a slash (/). Each path occupies a line. No spaces are allowed between path names.
   File Integrity	Detects the integrity of key files. : enable : disable File Paths: Configure the file paths.
   Important File Directory Change	Detects the directory change of key files. : enable : disable Enable Audit: enables the audit detection function. If the function is enabled and inotify usage exceeds the limit, some file directory changes cannot be detected. : enable : disable Session IP Whitelist: If the file process belongs to the sessions of the listed IP addresses, no audit applies. Unmonitored File Types: File types that do not need to be monitored. Unmonitored File Paths: File paths that do not need to be monitored. Monitoring Login Keys: enables the function of monitoring login keys. : enable : disable
   Directory Monitoring Mode	Directory monitoring mode. File or Directory Path: Some file or directory monitoring paths are preset in the system. You can modify the file change type to be detected and add the file or directory paths to be monitored.

3. Confirm the information and click OK.

Login Security Check

1. Click Login Security Check.
2. In the displayed Login Security Check page, modify the policy content. Table 7 describes the parameters.

   Table 7 Parameter description

   Parameter	Description
   Lock Time (min)	This parameter is used to determine how many minutes the IP addresses that send attacks are locked. The value range is 1 to 43200. Login is not allowed in the lockout duration.
   Cracking Behavior Determination Threshold (s)	This parameter is used together with Cracking Behavior Determination Threshold (Login Attempts). The value range is 5 to 3,600. For example, if this parameter is set to 30 and Cracking Behavior Determination Threshold (Login Attempts) is set to 5, the system determines that an account is cracked when the same IP address fails to log in to the system for five times within 30 seconds.
   Cracking Behavior Determination Threshold (Login Attempts)	This parameter is used together with Cracking Behavior Determination Threshold. The value range is 1 to 36,000.
   Threshold for slow brute force attack (second)	This parameter is used together with Threshold for slow brute force attack (failed login attempt). The value range is 600 to 86,400s. For example, if this parameter is set to 3600 and Threshold for slow brute force attack (failed login attempt) is set to 15, the system determines that an account is cracked when the same IP address fails to log in to the system for fifteen times within 3,600 seconds.
   Threshold for slow brute-force attack (failed login attempt)	This parameter is used together with Threshold for slow brute force attack (second). The value range is 6 to 100.
   Check Whether the Audit Login Is Successful	After this function is enabled, HSS reports login success logs. : enable : disable
   Block Non-whitelisted Attack IP Address	After this function is enabled, HSS blocks the login of brute force IP addresses (non-whitelisted IP addresses).
   Report Alarm on Brute-force Attack from Whitelisted IP Address	After this function is enabled, HSS generates alarms for brute force attacks from whitelisted IP addresses. : enable : disable
   Whitelist	After an IP address is added to the whitelist, HSS does not block brute force attacks from the IP address in the whitelist. A maximum of 50 IP addresses or network segments can be added to the whitelist. Both IPv4 and IPv6 addresses are supported.

3. Confirm the information and click OK.

Malicious File Detection

1. Click Malicious File Detection.
2. On the displayed page, modify the policy. For more information, see Table 8.

   Table 8 Parameter description

   Parameter	Description
   Whitelist Paths in Reverse Shell Check	Process file path to be ignored in reverse shell detection Start with a slash (/) and end with no slashes (/). Occupy a separate line and cannot contain spaces.
   Reverse Shell Scanning Interval (s):	Reverse shell scanning period. The value range is 30 to 86,400.
   Audit detection enhancement	Whether to enhance audit detection. You are advised to enable this function. : enable : disable
   Max. open files per process	Maximum number of files that can be opened by a process. The value range is 10 to 300,000.
   Detect Reverse Shells	Detects reverse shells. You are advised to enable it. : enable : disable
   Auto-block Reverse Shells	Specifies whether to enable automatic blocking of reverse shells. You are advised to enable this function. : enable : disable NOTE: This parameter takes effect after the function of Isolating and Killing Malicious Programs is enabled.
   Abnormal Shell Detection	Detects abnormal shells. You are advised to enable it. : enable : disable

3. Confirm the information and click OK.

Abnormal Process Behavior

1. Click Abnormal process behaviors.
2. In the displayed area, modify the settings as required. For more information, see Table 9.

   Table 9 Parameter description

   Parameter	Description	Example Value
   Detection and Scanning Cycle (Seconds)	Interval for checking the running programs on the host. The value range is 30 to 1,800.	1800
   Detection Mode	Select the method for abnormal process behavior detection. Sensitive: In-depth and full detection and scanning are performed on all processes, which may cause false positives. Suitable for cyber protection drills and key event assurance drills. Balanced: All processes are detected and scanned. The detection result accuracy and the abnormal process detection rate are balanced. Suitable for routine protection. Conservative: All processes are detected and scanned. This mode provides high detection result accuracy and low false positives. Suitable for scenarios with a large number of false positives.	Balanced

3. Confirm the information and click OK.

Root Privilege Escalation Detection

1. Click Root privilege escalation.
2. In the displayed area, modify the settings as required. For more information, see Table 10.

   Table 10 Parameter description

   Parameter	Description
   Ignored Process File Path	Ignored process file path Start with a slash (/) and end with no slashes (/). Occupy a separate line and cannot contain spaces.
   Scanning Interval (s)	Interval for checking process files. The value range is 5 to 3,600.

3. Confirm the information and click OK.

Real-time Process

1. Click Real-time Process.
2. On the displayed page, modify the settings as required. For more information, see Table 11.

   Table 11 Parameters for real-time process policy settings

   Parameter	Description
   Full Process Report Interval (s)	Interval for reporting the full process. The value range is 3,600 to 86,400.
   High-Risk Commands	High-risk commands that contain keywords during detection.
   Whitelist (Do Not Record Logs)	Add paths or program names that are allowed or ignored during detection.

3. Confirm the information and click OK.

Rootkit Detection

1. Click Rootkit Detection.
2. On the rootkit detection page, modify the policy content.

   Table 12 Parameter description

   Parameter	Description	Example Value
   Scanning Interval (s)	Interval for executing the check policy. The value ranges from 60 to 86,400.	86400
   Check Library	Check files and folders in the existing libraries. You are advised to enable this function. : enable : disable	: enable
   Check Kernel Space	Perform the check by kernel modules. All kernel modules will be checked. You are advised to enable this function. : enable : disable	: enable
   Kernel Module Whitelist	Add the kernel modules that can be ignored during the detection. Up to 10 kernel modules can be added. Each module occupies a line.	xt_conntrack virtio_scsi tun

3. Confirm the information and click OK.

AV Detection

1. Click AV Detection.
2. On the AV Detection slide pane that is displayed, modify the settings as required. For details, see Table 13.

   Table 13 AV detection policy parameters

   Parameter	Description	Example Value
   Real-Time Protection	After this function is enabled, AV detection is performed in real time when the current policy is executed. You are advised to enable this function. : enable : disable
   Protected File Type	Type of the files to be checked in real time. All: Select all file types. Executable: Executable file types such as EXE, DLL, and SYS. Compressed: Compressed file types such as ZIP, RAR, and JAR. Text: Text file types such as PHP, JSP, HTML, and Bash. OLE: Composite file types such as Microsoft Office files (PPT and DOC) and saved email files (MSG). Other: File types except the preceding types.	All
   Action	Handling method for the object detection alarms. Automated handling:Isolate high-risk virus files bu default. Report other virus files but do not isolate them. Manual handling: Report all the detected virus files but do not isolate them. You need to handle them manually.	Automated handling

3. Confirm the information and click OK.

Container Information Collection

1. Click Container Information Collection.
2. On the Container Information Collection slide pane that is displayed, modify the Policy Settings. For details about the parameters, see Table 14.
   

   The whitelist has a higher priority than blacklist. If a directory is specified in both the whitelist and blacklist, it is regarded as a whitelisted item.

   Table 14 Container information collection policy parameters

   Parameter	Description	Example Value
   Mount Path Whitelist	Enter the directory that can be mounted.	/test/docker or /root/* Note: If a directory ends with an asterisk (*), it indicates all the sub-directories under the directory (excluding the main directory). For example, if /var/test/* is specified in the whitelist, all sub-directories in /var/test/ are whitelisted, excluding the test directory.
   Mount Path Blacklist	Enter the directories that cannot be mounted. For example, user and bin, the directories of key host information files, are not advised being mounted. Otherwise, important information may be exposed.

3. Confirm the information and click OK.

Cluster Intrusion Detection

1. Click Cluster Intrusion Detection.
2. On the Cluster Intrusion Detection slide pane that is displayed, modify the Policy Settings. For details about the parameters, see Table 15.

   Table 15 Cluster intrusion detection policy parameters

   Parameter	Description	Example Value
   Basic Detection Cases	Select basic check items as required.	Select all
   Whitelist	You can customize the types and values that need to be ignored during the detection. You can add and delete types and values as required. The following types are supported: IP address filter Pod name filter Image name filter User filter Pod tag filter Namespace filter NOTE: Each type can be used only once.	Type: IP address filtering Value: 192.168.x.x

   

   After this policy is configured, you need to enable the log audit function and deploy the HSS agent on the management node (node where the APIServer is located) of the cluster to make the policy take effect.

3. Confirm the information and click OK.

Container File Monitoring

If a monitored file path is under the mount path rather than the writable layer of the container on the server, changes on the file cannot trigger container file modification alarms. To protect such files, configure a file protection policy.

1. Click Container File Monitoring.
2. On the Container File Monitoring slide pane that is displayed, modify the Policy Settings. For details about the parameters, see Table 16.

   Table 16 Container file monitoring policy parameters

   Parameter	Description	Example Value
   Fuzzy match	Indicates whether to enable fuzzy match for the target file. You are advised to select this option.	Selected
   Block New Executable	Monitor the behavior of the adding executable files. If this option is selected, adding executable files is prohibited. You are advised to select this option.	Selected
   Image Name	Name of the target image to be checked	test_bj4
   Image ID	ID of the target image to be checked	-
   File	Name of the file in the target image to be checked	/tmp/testw.txt

3. Confirm the information and click OK.

Container Process Whitelist

1. Click Container Process Whitelist.
2. On the Container Process Whitelist slide pane that is displayed, modify the Policy Settings. For details about the parameters, see Table 17.

   Table 17 Container process whitelist policy parameters

   Parameter	Description	Example Value
   Fuzzy Match	Indicates whether to enable fuzzy match for the target file. You are advised to select this option.	Selected
   Image Name	Name of the target image to be detected	test_bj4
   Image ID	ID of the target image to be checked	-
   Process	Path of the file in the target image to be checked	/tmp/testw

3. Confirm the information and click OK.

Suspicious Image Behaviors

1. Click Suspicious Image Behaviors.
2. On the Suspicious Image Behaviors slide pane that is displayed, modify the Policy Settings. For details about the parameters, see Table 18.

   Table 18 Suspicious image behaviors policy parameters

   Parameter	Description	Example Value
   Rule Name	Name of a rule	-
   Description	Brief description of a rule	-
   Template	Configure templates based on different rules. The supported rules are as follows: Image whitelist Image blacklist Image tag whitelist Image tag blacklist Create container whitelist Create container blacklist Container mount proc whitelist Container seccomp unconfined Container privilege whitelist Container capability whitelist The parameters are described as follows: Exact match: Enter the names of the images you want to check. Use semicolons (;) to separate multiple names. A maximum of 20 names can be entered. RegEx match: Use regular expressions to match images. Use semicolons (;) to separate multiple expressions. A maximum of 20 expressions can be entered. Prefix match: Enter the prefixes of the images you want to check. Multiple prefixes are separated by semicolons (;). A maximum of 20 prefixes can be entered. Tag Name: Enter the tag and value of the images you want to check. A maximum of 20 tags can be added. Permission Type: Specify permissions to be checked or ignored. For details about permissions, see Table 19.	-

   Table 19 Abnormal image permissions

   Permissions Name	Description
   AUDIT_WRITE	Write records to kernel auditing log.
   CHOWN	Make arbitrary changes to file UIDs and GIDs.
   DAC_OVERRIDE	Bypass file read, write, and execute permission checks.
   FOWNER	Bypass permission checks on operations that normally require the file system UID of the process to match the UID of the file.
   FSETID	Do not clear set-user-ID and set-group-ID permission bits when a file is modified.
   KILL	Bypass permission checks for sending signals
   MKNOD	Create special files using mknod.
   NET_BIND_SERVICE	Bind a socket to internet domain privileged ports (port numbers less than 1024).
   NET_RAW	Use RAW and PACKET sockets.
   SETFCAP	Set file capabilities.
   SETGID	Make arbitrary manipulations of process GIDs and supplementary GID list.
   SETPCAP	Modify process capabilities.
   SETUID	Make arbitrary manipulations of process UIDs.
   SYS_CHROOT	Use chroot to change the root directory.
   AUDIT_CONTROL	Enable and disable kernel auditing; change auditing filter rules; retrieve auditing status and filtering rules.
   AUDIT_READ	Allow reading audit logs via multicast netlink socket.
   BLOCK_SUSPEND	Allow suspension prevention.
   BPF	Allow creating BPF maps, loading BPF Type Format (BTF) data, retrieve JITed code of BPF programs, and more.
   CHECKPOINT_RESTORE	Allow operations related to checkpoints and restoration.
   DAC_READ_SEARCH	Bypass file read permission checks and directory read and execute permission checks.
   IPC_LOCK	Lock memory (such as mlock, mlockall, mmap, and shmctl).
   IPC_OWNER	Bypass permission checks for operations on System V IPC objects.
   LEASE	Establish leases on arbitrary files
   LINUX_IMMUTABLE	Set the FS_APPEND_FL and FS_IMMUTABLE_FL i-node flags.
   MAC_ADMIN	Allow MAC configuration or state changes.
   MAC_OVERRIDE	Override Mandatory Access Control (MAC).
   NET_ADMIN	Perform various network-related operations.
   NET_BROADCAST	Make socket broadcasts, and listen to multicasts.
   PERFMON	Allow privileged system performance and observability operations using perf_events, i915_perf and other kernel subsystems.
   SYS_ADMIN	Perform a range of system administration operations.
   SYS_BOOT	Use reboot and kexec_load. Reboot and load a new kernel for later execution.
   SYS_MODULE	Load and unload kernel modules.
   SYS_NICE	Raise process nice value (nice, set priority) and change the nice value for arbitrary processes.
   SYS_PACCT	Enable or disable process accounting.
   SYS_PTRACE	Trace arbitrary processes using ptrace.
   SYS_RAWIO	Perform I/O port operations (ipl and ioperm).
   SYS_RESOURCE	Override resource limits.
   SYS_TIME	Set the system clock (settimeofday, stime, and adjtimex) and real-time (hardware) clock.
   SYS_TTY_CONFIG	Use vhangup. Employ various privileged ioctl operations on virtual terminals.
   SYSLOG	Perform privileged syslog operations.
   WAKE_ALARM	Trigger something that will wake up the system.

3. Confirm the information and click OK.

Port Scan Detection

1. Click Port Scan Detection.
2. On the Port Scan Detection slide pane that is displayed, modify the Policy Settings. For details about the parameters, see Table 20.

   Table 20 Port scan detection policy parameters

   Parameter	Description	Example Value
   Process Information Collection Interval (s):	Interval for obtaining processes	Selected
   Source IP Address Whitelist	Enter the IP address whitelist. Separate multiple IP addresses with semicolons (;).	test_bj4
   Packet Quantity Threshold	-	-
   Ports to Scan	Details about the port number and protocol type to be detected	-

3. Confirm the information and click OK.

Self-protection

The self-protection policy protects HSS software, processes, and files from being damaged by malicious programs. You cannot customize the policy content.