Cisco ROUTER-SDM-CD User Manual page 247

Chapter 10 Application Security
Set Content Length checkbox
Configure Transfer Encoding Checkbox
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Check this box to set a minimum and maximum length for the data in an HTTP
packet, and enter the values in the fields provided. Use the permit, block, and
alarm controls to specify the action the router takes if the amount of data falls
below the minimum length or when it exceeds the maximum length.
Check this box to have the router verify how the data in the packet is encoded, and
use the permit, block, and alarm controls to specify the action the router takes if
it encounters the transfer encodings that you choose.
Chunk checkbox
The Encoding format specified in RFC 2616, Hypertext Transfer
Protocol—HTTP/1. The body of the message is transferred in a series of chunks;
each chunk contains its own size indicator.
Compress checkbox
The encoding format produced by the UNIX "compress" utility.
Deflate checkbox
The "ZLIB" format defined in RFC 1950, ZLIB Compressed Data Format
Specification version 3.3, combined with the "deflate" compression mechanism
described in RFC 1951, DEFLATE Compressed Data Format Specification
version 1.3.
gzip checkbox
The encoding format produced by the GNU zip ("gzip") program.
Identity checkbox
Default encoding, which indicates that no encoding has been performed.
Cisco Router and Security Device Manager 2.5 User's Guide
HTTP
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