A partial MOVEit DMZ database schema is listed below. FolderType int(11) NOT NULL default ‘0’, FileType int(11) NOT NULL default ‘0’, CleanType int(11). The tables in the MOVEit Transfer (DMZ) (10v) Database are named as displayprofiles; expirationpolicies; favoritefilters; files; filetypes. Networks Fall Firewalls. Intranet. DMZ. Internet. Firewall. Firewall. Web server, email server, web proxy, etc. Networks Fall
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Anti-Virus scanning is applied only to accepted traffic that was allowed by the security policy. Use the instructions in this section to configure Traditional Anti-Virus in your system. Download updates from a Check Point server prior to downloading signature updates. The following signature update methods are available the default update interval is minutes for all methods:.
Traditional Anti-Virus scanning is performed only on traffic that is allowed by the Security Rule Base. Using this method the default is fairly intuitive and does not require filtype specification of hosts or networks. This method also enables you to define exceptions, for example, locations to or from which files are not scanned.
Scan by IPs lets you define the traffic to be scanned. When using Scan by IPs, use a Rule Base to specify the ifletype and destination of the data to be scanned. Filwtype by File Direction enables you to set file scanning according to the file’s and not necessarily the connection’s origin and destination. If you want most or all files in a given direction to be scanned, select Scan by File Direction. If you want a connection or part of a connection’s source or destination to be scanned, select Scan by IPs.
When using Scan by File Direction, you must select the direction of the data to scan, which depends on whether you want to scan files to or from the internal networks and the DMZ. The DMZ demilitarized zone is an internal network with an intermediate level of security. Its security level lies between trusted internal networks, such as a corporate LAN, and non-trusted external networks, such as the Internet.
For example, you can decide not to scan traffic passing from external networks to the DMZ, but djz still scan traffic passing from the DMZ to internal networks and from the external to internal networks. Traditional Anti-Virus scanning can be enabled in either the proactive or stream detection mode. This mode uses sandboxes and heuristics to detect malicious code throughout the traffic as opposed to passive signature based detection.
Scanned data is either allowed or blocked based on the response of the state-of-the-art Traditional Anti-Virus engine. Proactive detection provides a high level of protection but has an impact on performance.
Using Traditional Anti-Virus
This mode is based on state-of-the-art virus signatures that are frequently updated in order to detect recent Malware outbreaks. In upgraded systems, the detection mode that is activated by default is dependent upon whether the Traditional Anti-Virus feature was previously activated or not.
The Traditional Anti-Virus engine acts as a proxy which caches the scanned file before delivering it to the client for files that need to be scanned.
When scanning large files, if the whole file is scanned before being made available, the user may experience a long delay before the file is delivered. A similar problem may arise when using client applications with short timeout periods for example, certain FTP clients to download large files. If the whole file is cached and scanned before being delivered, the client applications may time out while waiting.
To address this problem, Continuous Download starts sending information to the client while Traditional Anti-Virus scanning is still taking place. If a virus is found during the scan, file delivery to the client is terminated.
Note – Continuous Download is only relevant if you have selected to use the Activate proactive detection option. You can specify the file types for which you do not want Continuous Download to occur. Some file types for example, Adobe Acrobat PDF and Microsoft Power Point files can open on a client computer before the whole file has been downloaded.
If Continuous Download is allowed for those file types, and a virus is present in the opened part of the file, it could infect the client computer. IPS has a built-in File Type recognition engine, which identifies the types of files passed as part of the connection and enables you to define a per-type policy for handling files of a given type.
You can specify safe file types that are allowed to pass through IPS without being scanned for viruses. It is also possible to configure file types to be scanned or blocked.
File types are considered to be safe if they are not known to contain viruses, for example, some filerype and video files are considered safe. Other formats are considered to be safe because they are relatively hard to tamper with. What is considered to be safe changes according to published threats and depends on how the administrator balances security versus performance considerations.
IPS reliably identifies binary file types by examining the file type signatures magic numbers. GIFwhich can be spoofed.
For detailed explanations regarding the options described in the procedures in this section, see Understanding Traditional Anti-Virus Scanning Options. The Mail Traditional Anti-Virus policy prevents email from being used as a virus delivery mechanism.
By proactively scanning the Internet, the Data Center identifies massive virus outbreaks as soon as they occur. Filehype Zero-Hour solution provides protection during the critical time it takes to discover a new virus outbreak and assign it a signature. See Continuous Download for further information. You can set an action to take place when a file of a specified type passes through the gateway, so that it is not scanned for viruses.
For example, picture and video files are normally considered safe. Other formats can be considered safe because they are relatively hard to tamper with. Update the list as necessary. In this window, you can also configure Continuous Download options. Continuous Download options are only relevant if the scan is set to Proactive Detection. See Continuous Download for more information. When you select the Enable Traditional Anti-Virus option, the Traditional Anti-Virus protection is installed and updates are sent to the specified gateway.
Note – It is important to configure a valid DNS server address on your management and gateway in order for the signature update to work. The UTM-1 Edge Traditional Anti-Virus scanning policy enables you to select the service s to and from which a source or destination is scanned.
Files set for filtype are defined in the classic Rule Base, which filegype the source and destination of the connection to be scanned. Best Practice – use this method if you want to define exactly which traffic to scan. For example, if all incoming traffic from external networks reaches the DMZ, you can specify that only traffic to the Traditional Anti-Virus servers is scanned.
Proactive mode – a file-based solution where the kernel traps the traffic for the selected protocols and forwards the traffic to the security server.
The security server forwards the data stream to the Traditional Anti-Virus engine. The data is allowed or fietype based on the response of the Traditional Anti-Virus engine. Stream mode – the kernel processes the traffic for the selected protocols on the stream of data without storing the entire file.
The data is allowed or blocked based on the response of the kernel. Database Updates The following kinds of database updates are available: Updates of the virus signature can be scheduled at a predefined interval. Updates of virus signatures can be initiated at any time. You have a valid Check Point User Center user name and password. The following signature update methods are available the default update interval is minutes for all methods: Download signature updates every x minutes: Enables you to define the update interval.
Download from Check Point site: Updates are downloaded directly to the CI gateways. This method usually results in faster update times. Download from My local Security Management Server: Indicates that updates are only downloaded by the Security Management Server from the default Check Point signature distribution server and then redistributed all CI gateways.
This method is useful when Internet access is not available for all gateways or if the download can only occur once for all the gateways. Comparing Scan by File Direction and by IPs Scan by File Direction enables you to set file scanning according to the file’s and not necessarily the connection’s origin and destination.
Scanning by File Direction: Selecting Data to Scan When using Scan by File Direction, you must select the direction of the data to scan, which depends on whether you want to scan files to or from the internal networks and the DMZ. What is a DMZ?
Understanding Proactive and Stream Mode Detection Traditional Anti-Virus scanning can be enabled in either the proactive or stream detection mode. Proactive detection mode – a comprehensive, file-based Traditional Anti-Virus solution where traffic for the selected protocols is trapped in the kernel of the Security Gateway and forwarded to dm security server for scanning.
It detects not flletype known viruses, but also zero-day attacks, by using advanced proactive techniques. This mode is not available for Virtual System gateways. Stream detection mode – where traffic is scanned for viruses as it passes through the network on streams of data, without storing entire files and without causing an impact on performance.
In newly installed systems, stream mode is activated by default. In upgraded systems that previously used the Traditional Anti-Virus scanning feature, proactive detection is activated by default. Riletype upgraded systems that previously did not use the Traditional Anti-Virus scanning feature, stream mode detection is activated by default. Continuous Download The Traditional Anti-Virus engine acts as a proxy which caches the scanned file before delivering it fileype the client for files that need to be scanned.
File Type Recognition IPS has a built-in File Type recognition engine, which identifies the types of files passed as part of the connection and enables you to define a per-type policy for handling files of a given fioetype. The following file types can be configured: Performs Traditional Anti-Virus file scanning according to the settings in the different services pages. By default, all unrecognized file types are scanned. Does not allow passage of file types that are preset for blocking according to IPS advisories.
Allows files to pass though the Security Gateway without being scanned for viruses. Files specified as this type are considered to be safe. Configuring Traditional Anti-Virus For detailed explanations regarding the options described in the procedures in this section, filwtype Understanding Traditional Anti-Virus Scanning Options. Set the slider to Block.
With the slider, select a Zero hour malware protection level: