Cisco Systems TFTP Inspection

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Cisco ASA Series Firewall ASDM Configuration Guide
Chapter11 Configuring Inspection of Basic Internet Protocols
TFTP Inspection
•MIME Filename Length Criterion Values—Specifies the value details for MIME filename length
match.
– Greater Than Length—MIME filename length in bytes.
– Action—Reset, Drop Connection, Log.
– Log—Enable or disable.
•MIME Encoding Criterion Values—Specifies the value details for MIME encoding match.
– Available Encodings table
7bit
8bit
base64
binary
others
quoted-printable
– Add—Adds the selected parameter from the Available Encodings table to the Selected
Encodings table.
– Remove—Removes the selected command from the Selected Commands table.
– Action—Reset, Drop Connection, Log.
– Log—Enable or disable.
•Sender Address Criterion Values—Specifies the value details for sender address match.
– Regular Expression—Lists the defined regular expressions to match.
– Manage—Opens the Manage Regular Expressions dialog box, which lets you configure regular
expressions.
– Regular Expression Class—Lists the defined regular expression classes to match.
– Manage—Opens the Manage Regular Expression Class dialog box, which lets you configure
regular expression class maps.
– Action—Reset, Drop Connection, Log.
– Log—Enable or disable.
•Sender Address Length Criterion Values—Specifies the value details for sender address length
match.
– Greater Than Length—Sender address length in bytes.
– Action—Reset, Drop Connection, Log.
– Log—Enable or disable.
TFTP Inspection
TFTP inspection is enabled by default.
TFTP, described in RFC 1350, is a simple protocol to read and write files between a TFTP server and
client.