Export (0) Print
Expand All

Content types

The content types rule element allows you to apply another layer of security to your access rules by limiting the rule application to specific types of content, based on the Multipurpose Internet Mail Extensions (MIME) type and file name extension.

Content type settings apply only to HTTP and tunneled FTP traffic which passes through Forefront TMG.

When a client requests HTTP content, Forefront TMG sends the request to the Web server. When the Web server returns the object, Forefront TMG checks the object's MIME type or its file name extension, depending on the header information returned by the Web server. Forefront TMG determines if a rule applies to a content type that includes the requested file name extension, and processes the rule accordingly.

When a client requests FTP content, Forefront TMG checks the file name extension of the requested object. Forefront TMG determines if a rule applies to a content type that includes the requested file name extension, and processes the rule accordingly.

Forefront TMG is preconfigured with the following content types that can be used in access rules. Preconfigured content types cannot be modified or deleted.

Content Type Description

Application

Used to control access to content containing applications, such as executables, dynamic-link libraries (DLL), .ole, and .vbs files.

Application Data Files

Used to control access to content containing data for applications, such as Perfmon, Help, and .wmf files.

Audio

Used to control access to content containing audio files, such as MP3 and WAV files.

Compressed Files

Used to control access to content including compressed files, such as .z and .zip files.

Documents

Used to control access to documents, such as text, Adobe PDF, and XML documents.

HTML Documents

Used to control access to content containing HTML documents, such as .xsl and .htm files.

Images

Used to control access to content containing images, such as Windows Bitmap, JPEG, and GIF files.

Macro Documents

Used to control access to documents that may contain macros, such as Microsoft Office Word and Microsoft Office Excel®.

Text

Used to control access to content containing text files, such as .txt and plain text files.

Video

Used to control access to content containing video files, such as .AVI, QuickTime, and MPEG files.

VRML

Used to control access to content containing VRML files, such as .flr and .wrl files.

Depending on the Web server, different MIME types are associated with different file name extensions. The following table lists the Internet Information Services (IIS) default associations.

File name extension MIME type

.hta

application/hta

.isp

application/x-internet-signup

.crd

application/x-mscardfile

.pmc

application/x-perfmon

.spc

application/x-pkcs7-certificates

.sv4crc

application/x-sv4crc

.bin

application/octet-stream

.clp

application/x-msclip

.mny

application/x-msmoney

.p7r

application/x-pkcs7-certreqresp

.evy

application/envoy

.p7s

application/pkcs7-signature

.eps

application/postscript

.setreg

application/set-registration-initiation

.xlm

application/vnd.ms-excel

.p7b

application/x-cpio

.cpio

application/x-dvi

.dvi

application/x-pkcs7-certificates

.doc

application/msword

.dot

application/msword

.p7c

application/pkcs7-mime

.ps

application/postscript

.wps

application/vnd.ms-works

.csh

application/x-csh

.iii

application/x-iphone

.pmw

application/x-perfmon

.man

application/x-troff-man

.hdf

application/x-hdf

.mvb

application/x-msmediaview

.texi

application/x-texinfo

.setpay

application/set-payment-initiation

.stl

application/vndms-pkistl

.mdb

application/x-msaccess

.oda

application/oda

.hlp

application/winhlp

.nc

application/x-netcdf

.sh

application/x-sh

.shar

application/x-shar

.tcl

application/x-tcl

.ms

application/x-troff-ms

.ods

application/oleobject

.axs

application/olescript

.xla

application/vnd.ms-excel

.mpp

application/vnd.ms-project

.dir

application/x-director

.sit

application/x-stuffit

.*

application/octet-stream

.crl

application/pkix-crl

.ai

application/postscript

.xls

application/vnd.ms-excel

.wks

application/vnd.ms-works

.ins

application/x-internet-signup

.pub

application/x-mspublisher

.wri

application/x-mswrite

.spl

application/futuresplash

.hqx

application/mac-binhex40

.p10

application/pkcs10

.xlc

application/vnd.ms-excel

.xlt

application/vnd.ms-excel

.dxr

application/x-director

.js

application/x-javascript

.m13

application/x-msmediaview

.trm

application/x-msterminal

.pml

application/x-perfmon

.me

application/x-troff-me

.wcm

application/vnd.ms-works

.latex

application/x-latex

.m14

application/x-msmediaview

.wmf

application/x-msmetafile

.cer

application/x-x509-ca-cert

.zip

application/x-zip-compressed

.p12

application/x-pkcs12

.pfx

application/x-pkcs12

.der

application/x-x509-ca-cert

.pdf

application/pdf

.xlw

application/vnd.ms-excel

.texinfo

application/x-texinfo

.p7m

application/pkcs7-mime

.pps

application/vnd.ms-powerpoint

.dcr

application/x-director

.gtar

application/x-gtar

.sct

text/scriptlet

.fif

application/fractals

.exe

application/octet-stream

.ppt

application/vnd.ms-powerpoint

.sst

application/vndms-pkicertstore

.pko

application/vndms-pkipko

.scd

application/x-msschedule

.tar

application/x-tar

.roff

application/x-troff

.t

application/x-troff

.prf

application/pics-rules

.rtf

application/rtf

.pot

application/vnd.ms-powerpoint

.wdb

application/vnd.ms-works

.bcpio

application/x-bcpio

.dll

application/x-msdownload

.pma

application/x-perfmon

.pmr

application/x-perfmon

.tr

application/x-troff

.src

application/x-wais-source

.acx

application/internet-property-stream

.cat

application/vndms-pkiseccat

.cdf

application/x-cdf

.tgz

application/x-compressed

.sv4cpio

application/x-sv4cpio

.tex

application/x-tex

.ustar

application/x-ustar

.crt

application/x-x509-ca-cert

.ra

audio/x-pn-realaudio

.mid

audio/mid

.au

audio/basic

.snd

audio/basic

.wav

audio/wav

.aifc

audio/aiff

.m3u

audio/x-mpegurl

.ram

audio/x-pn-realaudio

.aiff

audio/aiff

.rmi

audio/mid

.aif

audio/x-aiff

.mp3

audio/mpeg

.gz

application/x-gzip

.z

application/x-compress

.tsv

text/tab-separated-values

.xml

text/xml

.323

text/h323

.htt

text/webviewhtml

.stm

text/html

.html

text/html

.xsl

text/xml

.htm

text/html

.cod

image/cis-cod

.ief

image/ief

.pbm

image/x-portable-bitmap

.tiff

image/tiff

.ppm

image/x-portable-pixmap

.rgb

image/x-rgb

.dib

image/bmp

.jpeg

image/jpeg

.cmx

image/x-cmx

.pnm

image/x-portable-anymap

.jpe

image/jpeg

.jfif

image/pjpeg

.tif

image/tiff

.jpg

image/jpeg

.xbm

image/x-xbitmap

.ras

image/x-cmu-raster

.gif

image/gif

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft