Robert H Dickinson

US Patent:

20030196098, Oct 16, 2003

Filed:

Apr 21, 2003

Appl. No.:

10/419219

Inventors:

Robert Dickinson - Redmond WA, US
Sathvik Krishnamurthy - San Jose CA, US

Assignee:

Tumbleweed Communications Corp. - Redwood City CA

International Classification:

H04L009/00

US Classification:

713/188000, 713/150000

Abstract:

An e-mail firewall () applies policies to e-mail messages () between a first 5 site and a plurality of second sites in accordance with a plurality of administrator selectable policies (). The firewall comprises a simple mail transfer protocol (SMTP) relay () for causing the e-mail messages () to be transmitted between the first site and selected ones of the second sites. A plurality of policy managers () enforce-administrator selectable policies. The policies, such as encryption and decryption policies, comprise at least a first source/destination policy (), at least a first content policy () and at least a first virus policy (). The policies are characterized by a plurality of administrator selectable criteria (), a plurality of administrator selectable exceptions () to the criteria and a plurality of administrator selectable actions () associated with the criteria and exceptions. The policy managers comprise an access manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the source/destination policy (). The policy managers () further comprise a content manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the content policy (), and a virus manager () for restriction transmission of e-mail messages () between the first site and the second sites in accordance with the virus policy ().

US Patent:

20040054886, Mar 18, 2004

Filed:

Sep 29, 2001

Appl. No.:

09/967117

Inventors:

Robert Dickinson - Redmond WA, US
Sathvik Krishnamurthy - San Jose CA, US

International Classification:

H04L009/00

US Classification:

713/153000

Abstract:

An e-mail firewall () applies policies to e-mail messages () between a first site and a plurality of second sites in accordance with a plurality of administrator selectable policies (). The firewall comprises a simple mail transfer protocol (SMTP) relay () for causing the e-mail messages () to be transmitted between the first site and selected ones of the second sites. A plurality of policy managers () enforce administrator selectable policies. The policies, such as encryption and decryption policies, comprise at least a first source/destination policy (), at least a first content policy () and at least a first virus policy (). The policies are characterized by a plurality of administrator selectable criteria (), a plurality of administrator selectable exceptions () to the criteria and a plurality of administrator selectable actions () associated with the criteria and exceptions. The policy managers comprise an access manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the source/destination policy (). The policy managers () further comprise a content manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the content policy (), and a virus manager () for restriction transmission of e-mail messages () between the first site and the second sites in accordance with the virus policy ().

US Patent:

20050081059, Apr 14, 2005

Filed:

Aug 9, 2004

Appl. No.:

10/915216

Inventors:

Jean-Christophe Bandini - Renton WA, US
Daryl Odnert - Mountain View CA, US
Robert Dickinson - Redmond WA, US
Sathvik Krishnamurthy - San Jose CA, US

International Classification:

H04L009/00

US Classification:

713201000, 709206000

Abstract:

A relay provides message filtering services to an e-mail network. The relay monitors incoming communication and intercepts e-mail messages. The relay applies a policy to received messages to determine whether a message should be delayed. The relay applies a policy to delayed messages by reference to a delayed processing event which triggers the delayed processing. The relay updates policy data in accordance by employing an update module. The relay then restricts the delivery of messages having attributes close to those of harmful data as provided by a policy database.

US Patent:

20070005983, Jan 4, 2007

Filed:

Sep 5, 2006

Appl. No.:

11/516365

Inventors:

Robert Dickinson - Redmond WA, US
Sathvik Krishnamurthy - San Jose CA, US

International Classification:

H04L 9/00

US Classification:

713176000

Abstract:

An e-mail firewall () applies policies to e-mail messages () between a first 5 site and a plurality of second sites in accordance with a plurality of administrator selectable policies (). The firewall comprises a simple mail transfer protocol (SMTP) relay () for causing the e-mail messages () to be transmitted between the first site and selected ones of the second sites. A plurality of policy managers () enforce-administrator selectable policies. The policies, such as encryption and decryption policies, comprise at least a first source/destination policy (), at least a first content policy () and at least a first virus policy (). The policies are characterized by a plurality of administrator selectable criteria (), a plurality of administrator selectable exceptions () to the criteria and a plurality of administrator selectable actions () associated with the criteria and exceptions. The policy managers comprise an access manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the source/destination policy (). The policy managers () further comprise a content manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the content policy (), and a virus manager () for restriction transmission of e-mail messages () between the first site and the second sites in accordance with the virus policy ().

US Patent:

20070214353, Sep 13, 2007

Filed:

Dec 19, 2006

Appl. No.:

11/642165

Inventors:

Robert Dickinson - Redmond WA, US
Sathvik Krishnamurthy - San Jose CA, US

International Classification:

H04L 9/00

US Classification:

713154000

Abstract:

An e-mail firewall () applies policies to e-mail messages () between a first site and a plurality of second sites in accordance with a plurality of administrator selectable policies (). The firewall comprises a simple mail transfer protocol (SMTP) relay () for causing the e-mail messages () to be transmitted between the first site and selected ones of the second sites. A plurality of policy managers () enforce-administrator selectable policies. The policies, such as encryption and decryption policies, comprise at least a first source/destination policy (), at least a first content policy () and at least a first virus policy (). The policies are characterized by a plurality of administrator selectable criteria (), a plurality of administrator selectable exceptions () to the criteria and a plurality of administrator selectable actions () associated with the criteria and exceptions. The policy managers comprise an access manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the source/destination policy (). The policy managers () further comprise a content manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the content policy (), and a virus manager () for restriction transmission of e-mail messages () between the first site and the second sites in accordance with the virus policy ().

US Patent:

20070245416, Oct 18, 2007

Filed:

Dec 20, 2006

Appl. No.:

11/642117

Inventors:

Robert Dickinson - Redmond WA, US
Sathvik Krishnamurthy - San Jose CA, US

International Classification:

H04L 9/32

US Classification:

726014000, 713154000

Abstract:

An e-mail firewall () applies policies to e-mail messages () between a first 5 site and a plurality of second sites in accordance with a plurality of administrator selectable policies (). The firewall comprises a simple mail transfer protocol (SMTP) relay () for causing the e-mail messages () to be transmitted between the first site and selected ones of the second sites. A plurality of policy managers () enforce—administrator selectable policies. The policies, such as encryption and decryption policies, comprise at least a first source/destination policy (), at least a first content policy () and at least a first virus policy (). The policies are characterized by a plurality of administrator selectable criteria (), a plurality of administrator selectable exceptions () to the criteria and a plurality of administrator selectable actions () associated with the criteria and exceptions. The policy managers comprise an access manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the source/destination policy (). The policy managers () further comprise a content manager () for restricting transmission of e-mail messages () between the first site and the second sites in accordance with the content policy (), and a virus manager () for restriction transmission of e-mail messages () between the first site and the second sites in accordance with the virus policy ().