Technical Tip: Configuring file filter (standalone profile)

[Anthony_E]

Description
The previously embedded file filter within web filter, email filter, SSH inspection, and CIFS has moved to a standalone profile.
The file filter can be applied directly to firewall policies and supports various traffic protocols in proxy or flow mode.

This article describes how to configure file filter.

Scope
For version 6.4.1.

Solution
To configure a file filter from GUI.

- Configure the filter profile:

1) Go to Security Profiles -> File Filter and select 'Create New'.
2) Select a Feature set.
3) In the Rules section, select 'Create New'.
4) Configure the settings as needed.
5) Select 'OK' to save the rule.

6) Optionally, create more rules if needed.
7) Select 'OK' to save the filter profile.

- Apply the filter to a policy:

1) Go to Policy & Objects -> Firewall Policy and edit an existing policy or create a new one.
2) In the 'Security Profiles' section, enable 'File Filter'.
3) Select the filter from the dropdown box.

4) Configure the other settings as needed.
5) Select 'OK'.

To configure a file filter in the CLI.

- Configure the file filter profile:

# config file-filter profile
        edit "test"
            set comment ''
            set feature-set flow
            set replacemsg-group ''
            set log enable
            set scan-archive-contents enable
            # config rules
                edit "r2"
                    set comment ''
                    set protocol http ftp smtp imap pop3 cifs
                    set action block
                    set direction outgoing
                    set password-protected any
                    set file-type "sis" "tar" "tiff" "torrent" "upx" "uue" "wav" "wma" "xar" "xz" "zip"
                next
                edit "r1"
                    set comment ''
                    set protocol http ftp smtp imap pop3 cifs
                    set action log-only
                    set direction any
                    set password-protected any
                    set file-type ".net" "7z" "activemime" "arj" "aspack" "avi" "base64" "bat" "binhex" "bmp" "bzip" "bzip2"
                next
                edit "r3"
                    set comment ''
                    set protocol http ftp smtp imap pop3
                    set action block
                    set direction any
                    set password-protected any
                    set file-type "binhex"
                next
            end
        next
end

- Apply the filter to a policy:

# config firewall policy
        edit 1
            set name "filefilter-policy"
            set srcintf "port10"
            set dstintf "port9"
            set srcaddr "all"
            set dstaddr "all"
            set srcaddr6 "all"
            set dstaddr6 "all"
            set action accept
            set schedule "always"
            set service "ALL"
            set utm-status enable
            set profile-protocol-options "protocol"
            set ssl-ssh-profile "protocols"
            set file-filter-profile "test"
            set auto-asic-offload disable
            set np-acceleration disable
            set nat enable
        next
end