Transcript Implementing Security Requirements in the Final

HMIS Security Standards
David Canavan, Canavan Associates
David A. Crist, Permovio, Inc.
September 13-14, 2005
St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
HMIS Security Standards
Overview
David Canavan, Managing Director
Canavan Associates
September 13-14, 2005
St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
HMIS Security Standard
• The Standards seek to protect the confidentiality
of personal information while allowing for
reasonable, responsible, and limited uses and
disclosures of data.
• These privacy and security standards are based
on principles of fair information practices and on
security standards recognized by the information
privacy and technology communities.
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Applicability
Etc.
Web Server
INTERNET
Agency
Computers
Secure
Connection
Case
Manager
Outreach
Worker
Volunteer
Program
Director
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Baseline HMIS Agency Security
Requirements
Case
Manager
Outreach
Worker
Volunteer
• HMIS users
• Unique username and password
Program
Director
• HMIS should be enforcing unique username
• HMIS may be enforcing complex passwords
• Signed receipt of privacy notice
• Communities should have privacy notices in effect.
• If not, should be under development
• End users must sign a privacy policy
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
HMIS Computer Requirements
Agency
Computers
Agency
Computers
Agency
Computers
Agency
Computers
• Workstation username and password
• Password protected locking screen saver
• Stored in a secure location- locked office area
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
HMIS Computer Requirements
• Virus protection with auto update–
• Old virus protection = no virus protection
• Free virus protection is available at:
• www.free-av.com
• www.nonprofit-tech.org
• Individual or network firewall
• Individual firewalls can be activated in typical windows
installations through: control panel- windows security centerfirewall- click “on”
• Free or low cost firewall software can be downloaded at:
• www.zonelabs.com
• www.techsoup.org
• Spyware Software and Adware are becoming huge
obstacles to productivity. Communities should have a
standardized approach to solving.
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
System Level Security
Overview:
• Authentication
• Multiple Access
• Virus Protection with auto-update
• Firewalls- individual workstation or network
• Encryption- transmission
• Public access- PKI- Public Key Infrastructure
• Location Control
• Backup and disaster recovery
• Secure Disposal
• System Monitoring
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
PKI: Public Key Infrastructure
• Options for implementing PKI:
• Some communities are leveraging resources because a
single $20k certificate can generate thousands of user
certificates. (Being investigated at NHSDC)
• Some communities are generating their own PKI
• Some HMIS vendors are designing solutions
• Alternative to PKI:
• Extranet (Utilized in Los Angeles)
• Each agency obtains a static IP address from their
ISP which allows the HMIS to allow only authorized
computers access.
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Physical Access
• Access to workstations must be controlled and
monitored
• If not continuously staffed must be secured
• Can be very challenging to design- what are
communities doing?
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Backup and Disaster Recovery
•
All HMIS data must be regularly backed up and stored in a
secure off-site location:
•
•
•
•
Backup your data and applications
Save them to tape
Test the tapes
A Backup tape laying next to a server won’t help if the
server room catches fire!
• Alternatively, consider secure network-based offsite
backup solutions
•
What procedures has your vendor documented?
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Secure Disposal
• Tapes, disks and hard drives must be properly
formatted and erased before disposal.



Deleting information simply turns it off
Must take active steps to remove it from media
Anywhere from 2 to 7 overwrites, depending on
industry, is standard

What are you vendors doing with co-located servers
when they are upgraded?
What are vendors doing with rented server space
upon expiration of the contract?


Do you have this in writing?
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
System Monitoring
• All systems including central servers must be
monitored and “routinely” reviewed by staff.
• Monitoring decisions:
• Who monitors?
• What is normal and what is abnormal usage and
access?
• How do I access the information?
• What variables to monitor?
• How are vendors generating this information?
• What procedures have you set up to review
information?
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
System Monitoring (cont.)
• What variables to monitor…
•
•
•
•
•
•
•
Logon success/failure
Account management
Policy changes
Privilege use
Process tracking
System events
Connection attempts (IP and port)
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Resources
• www.hmis.info – community documents, up to date
information, FAQs
• Upcoming white papers
• Shared forms and templates (e.g., Privacy Notice,
Client Consent forms)
• Further technical assistance
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Security Resources
• National Institute of Standards and Technology Computer and
Security Resource Center
• http://csrc.ncsl.nist.gov
• Carnegie Mellon/CERT: Connecting to the Internet
• http://www.cert.org/tech_tips/before_you_plug_in.html
• CERT Implementation Tips for Servers and Networks
• http://www.cert.org/tech_tips/
• National Institutes of Health Center for Information Technology
Security Site
• http://www.alw.nih.gov/Security/security.html
• Forum of Incident Response and Security Reform
• http://first.org
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
HMIS Security Standards in
Las Vegas, Nevada
David A. Crist
Consultant, Permovio, Inc
September 13-14, 2005
St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Why Security?
• What is transmitted
• User Data – passwords, user IDs, client information
• Other headers – information useful to hackers such as web site
information or application information
• IP Header – source and destination addresses that can be used
by a hacker for further attacks
• What we don’t want them to have
• Anything transmitted
• How do we fix this problem?
• Firewall – which is HUD mandated
• VPN – Virtual Private Network which allows a secure
communication tunnel
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Firewall
• Firewalls prevent unauthorized users and/or data
from getting in or out of a network, using rules to
specify acceptable communication
• Firewalls do not protect your data within the
network or when that data gets out side of your
network to the internet
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Virtual Private Network (VPN)
• VPN tunnels, enabled by encryption algorithms,
give you the ability to use public internet
connections for secure data transmissions after it
leaves the firewall
• The piece that makes it “Virtually Private” is the
tunnel where by the data is encrypted such that
only the recipients at either end of the
transmission can see inside the protected
encryption shell
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Encryption
• Encryption is a technique for scrambling and
unscrambling information
• Encryption Algorithm – Mathematical function that
establishes the relationship between the encrypted
message and the decrypted message, such as the
industry DES (Data Encryption Standard) method
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Doesn’t Industry Standard
Mean Everyone Knows?
• Yes!
• Which is why there is a key to start the process
• Example: 2 people go into a hardware store and buy
locks. They are both built the same, look the same,
same industry standard, but the keys are different.
That is what makes them unique
• Our key has more combinations however:
374,144,419,156,711,000,000,000,000,000,000,0
00,000,000,000,000,000
to be exact.
• And that is only in step 1
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Steps?
• The first step is to establish communication
between the firewalls
• This is done with the key and multiple encryption
methods
• The second step is to establish IPSec
• The actual transmission of data in a secure tunnel
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
IPSec –Internet Protocol Security
or “The Tunnel”
• IPSec is a set of standards for creating and maintaining
secure communications using:
• Confidentiality – Encryption of data even if it is intercepted
• Access Control – Restricting the system to authenticated
users
• Authentication – Verifies the source of received data and
confirms there was no alteration of data in transit
• Rejection of replayed packets – Counters a replay attack
by a hacker if the data is intercepted and resent to the firewall
• Limited traffic flow confidentiality – Data information is
encrypted to mask the identities of the sending and receiving
systems
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
We Are Almost There
• The previously described pieces are what
securely connect participants in the HMIS
program to the secure database
• Up until now this is all transparent to the persons
using the system
• They must still login to the network where the
software resides and then login to the HMIS
software
• This completes a secure connection
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Las Vegas Hosted HMIS System
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development
Discussion
Any questions?
September 13-14, 2005 St. Louis, Missouri
Sponsored by the U.S. Department of Housing and Urban Development