
Stateful Inspection Advantage (Checkpoint):
  http://www.checkpoint.com/smb/help/z100g/7.5/7082.htm

Linux Load Balancing with HAProxy + Heartbeat:
  https://wiki.gogrid.com/wiki/index.php/Customer:Linux_Load_Balancing_with_HAProxy+Heartbeat 

Load Balancing OpenSSH SFTP with HAProxy:
  http://jpmorris-iso.blogspot.com/2013/01/load-balancing-openssh-sftp-with-haproxy.html 

HAproxy PROXY protocol
  http://haproxy.1wt.eu/download/1.5/doc/proxy-protocol.txt

FTP Load Balancing?
  http://www.formilux.org/archives/haproxy/0805/0976.html
  http://www.formilux.org/archives/haproxy/0805/0977.html

Best way to use HAProxy for FTP?
  http://permalink.gmane.org/gmane.comp.web.haproxy/2486

Load Balancing FTP:
  http://ben.timby.com/?page_id=210

FTP Load-balanced through haproxy:
  http://www.taiter.com/techlog/2012/09/ftp-load-balanced-through-haproxy.html

Network Load Balancing Services (MSFT):
  http://en.wikipedia.org/wiki/Network_Load_Balancing_Services

Network Load Balancing:
  http://en.wikipedia.org/wiki/Network_Load_Balancing

NcFTP.com "Why PASV Poses Problems for FTP Servers behind Load-Balancing Routers"
  http://www.ncftp.com/ncftpd/doc/misc/ftp_and_firewalls.html#PASVLBProblems

ftpcluster:
  http://www.awk-scripting.de/cluster/

Brane Dump: Load Balancing FTP servers
  http://hezmatt.org/~mpalmer/blog/2008/10/22/load-balancing-ftp-servers.html

Opensource load balancer projects:
  http://www.inlab.de/articles/free-and-open-source-load-balancing-software-and-projects.html
  http://sourceforge.net/projects/balance/

FTP ALG:
  http://www.amaranten.com/support/user%20guide/Application_Layer_Gateways/FTP_ALG.htm
  http://www.ietf.org/id/draft-tsou-behave-ftp46-00.txt

Breaking through FTP ALGs: possible?
  http://seclists.org/bugtraq/2000/Feb/176
  http://seclists.org/vuln-dev/2000/Feb/82
  https://listserv.icsalabs.com/pipermail/firewall-wizards/2000-March/008251.html

AWS ELB for FTP:
  https://forums.aws.amazon.com/thread.jspa?messageID=139143

Trilent FTP Proxy:
  http://trilent-ftp-proxy.en.softonic.com/

ServerFault:
  Reverse Proxy FTP traffic:
    http://serverfault.com/questions/122636/reverse-proxy-ftp-traffic

  Search on an FTP server:
    http://serverfault.com/questions/28568/using-the-find-command-on-the-ftp-server?rq=1

  FTP Load balancer:
    http://serverfault.com/questions/139342/ftp-load-balancer?rq=1

  Possible to load balance FTP?
    http://serverfault.com/questions/113456/is-it-possible-to-load-balance-an-ftp-server

  frox as reverse proxy?
    http://serverfault.com/questions/390043/frox-as-reverse-proxy

  proxy and reverse proxy on same server
    http://serverfault.com/questions/65133/proxy-and-reverse-proxy-on-same-server?rq=1

  FTP/SFTP/FTPS proxying
    http://serverfault.com/questions/117899/ftp-sftp-ftps-proxying?rq=1

  X-Forwarded-For
    http://stackoverflow.com/questions/11891185/x-forward-for-over-ssl-using-load-balancers?rq=1

Reverse proxy capabilities:
  http://www.rhinosoft.com/pressarchive/PressRelease2012-05-10.asp?prod=rs

Diagrams:
  http://pic.dhe.ibm.com/infocenter/ssp/v3r4/index.jsp?topic=%2Fcom.ibm.help.sspftpreverseproxy.doc%2FSSP_FTS_FTPRProxCfg.html
  http://pic.dhe.ibm.com/infocenter/ssp/v3r4/index.jsp?topic=%2Fcom.ibm.help.sspoverview.doc%2FSSP_Diag_FinishedFTPRev.html
  http://pic.dhe.ibm.com/infocenter/ssp/v3r4/index.jsp?topic=%2Fcom.ibm.help.sspoverview.doc%2FSSP_Diag_FinishSFTPRev.html
