FYI there is a petition on whitehouse.gov to deny those people who work on GFW entry US.
https://petitions.whitehouse.gov/petition/people-who-help-in...
Cisco: http://newsandinsight.thomsonreuters.com/California/News/201...
Juniper also implicated: http://www.cfr.org/china/us-internet-providers-great-firewal...
Blue coat: http://online.wsj.com/article/SB1000142405297020368750457700...
Websense: http://opennet.net/west-censoring-east-the-use-western-techn...
The list goes on ...