The only benefit of SSL as I see it today is the ability to protect a
private transaction, by creating an encrypted tunnel - browser to
server.
This is a good protection in an enterprise environment where there is a
chance of another employee sniffing the user's connection.
As a fact remote sniffing of data is almost impossible, unless you gain
control of the user's computer, the server or a network device between
the two.
In the first two scenarios (client or server owning) you have the
information already - no need for sniffing. The third scenario (network
device in the middle) is very unlikely to happen.
SSL is the same HTTP, just encapsulated in an encrypted tunnel - nothing
more, nothing less.
-----Original Message-----
From: dave kleiman [mailto:dave@isecureu.com]
Sent: Sunday, June 26, 2005 9:08 PM
To: webappsec@securityfocus.com
Subject: RE: Should login pages be protected by SSL?
Inline
-----Original Message-----
From: Michael Tsentsarevsky [mailto:michael.t@zahav.net.il]
1. I am sorry to say, but the SSL protocol had become a
"security stamp"
for a web site.
That is' if the site's owner had spent the 2k
bucks for a certificate, most of the users will think the web
site is "secured"
(talk about users education). In real life nothing is farther
from the truth!
At present it is an excellent layer of protection and encryption for the
individual transaction. It is the only common well known one we have.
There
are a few companies that make products to add layers of protection to
the
SSL.
The Certs are only about $150 not $2000.
SSL secured sites are leaking user and company information
and SSL is not the element to protect against it. Good coding
and proper site configuration and architecture are the key
for E-commerce security.
Yes that is true and this is ultimately important, probably even more
than
SSL, but definitely not instead of!!
2. IDS are network security devices that can intercept
hackers that are trying to manipulate data on a web site
(sometimes at least). Using SSL will render the IDS useless,
because it will not be able to intercept hacking patterns
against the site - as the data will be encrypted. That will
enable the hacker to do his bidding without fear.
You might want to do a little research here, on how to use your
particular
IDS/IPS with SSL (SSL Accelerator etc.) or find one that has that
feature
available.
3. SSL was designed to protect the CLIENT by providing a
strong identity of the server. But ... most of the users are
not familiar with the concepts of PKI and will override the
browser's alerts by pressing "Yes"
every time the browser is trying to tell them there is a
problem with a site.
Actually SSL was designed to encrypt and protect the transaction between
two
systems. Proper education is the key to any type of security. If your
users
are having problems grasping the concept point them to this:
http://www.securityfocus.com/archive/105/346322
Using SSL is sometimes good, but not in all cases.
Could you give us an example of when it would be bad to use SSL instead
of
no encryption at all?
________________________________________________________
Dave Kleiman, CAS, CIFI, CISM, CISSP, ISSAP, ISSMP, MCSE
www.SecurityBreachResponse.com www.ComputerForensicInvestigations.com
