Rakesh,
On 9/20/22 17:56, rakesh meka wrote:
I will just ask the my AD team to provide the CA certificate which is
already installed on the AD domain controller and then place it in client
(tomcat web server) trust store if it is not official.
If you post your configuration, we may be able to help point you in the
right direction.
Apart from this, i have done some much R&D in this concern but found mixed
answers. By if you have an idea, can you please share any insights.
While generating keystore/csr for SSL/TLS using keytool, I used RSA and my
CA Team wants me to use 4096 as keysize. And when i configured. I recieve
certificate is invalid in browser.
The browser is telling you that the certificate is *untrusted*, not invalid.
Then the first question raised is does keytool RSA support 4096 or
only 2048 keysize encryption. Java 1.8
Java supports arbitrary key sizes up to 16384 for RSA keys. Oddly
enough, keytool for Java 8 will tell you that's the maximum. Later
versions (I used 16.something) will just say "invalid key size" for
those larger than 16k.
-chris
On Mon, Sep 19, 2022, 12:09 PM Thomas Hoffmann (Speed4Trade GmbH)
<thomas.hoffm...@speed4trade.com.invalid> wrote:
Hello,
-----Ursprüngliche Nachricht-----
Von: rakesh meka <rakeshmeka67...@gmail.com>
Gesendet: Sonntag, 18. September 2022 22:57
An: Tomcat Users List <users@tomcat.apache.org>
Betreff: Re: HOW TO ENABLE LDAPS ON TOMCAT 8.5
Hi Thomas,
Thanks your so much for the quick response and help.
Having read all the response clearly once again.Not sure if I'm being
foolish.
First question:
So here in general, I would like to just summarize that client will be
the
application server where I have tomcat installed & application is
deployed.
Server will the domain controller server(LDAPs certificate to be
installed as
per the below Microsoft article).
Please correct me if the understanding is correct ?
Yes, private key (e.g. pfx) is installed on the server side, the AD domain
controller, let's call it AD
Second Question:
LDAPs certificate is to be installed domain controller. So that all the
other
apps on different app servers can query by having connection to domain
controller (in other terms LDAPs server).
The server needs the pfx-file (private key) and also the certificates
(end-certificate and intermediates if not already present).
The private key is stored secretly and the certificate + intermediates are
sent to the client during initial handshake.
Third Question:
Domain controller does already have the required certificates installed
for
LDAP authentication already because previously when I tried with port
no:389. I could see successful LDAP Connection established & user could
login successfully.
So now inorder to change from LDAP to LDAPS. Can now please let me know
the how could I proceed further
IF LDAPS certificate to installed on the APPLICATION SERVER:
---------------------------------
1. generate the certificate request using keytool. Following the same
process
as per article 2. Csr 3. Get it signed by CA.
4. Keep CA's certificate in Java truststore.
5. Then make the port changes & host(domain/LDAP server name).
6. Restart the tomcat so that webapp is deployed automatically.
The client only needs the CA certificate. Certificate requests are not
needed, this is only done once for the server part.
If an official CA was used (e.g. verisign), then the java client normally
already has the CA certificate in the truststure.
If not, you have to import the CAs certificate. The URL hast to change to
https and the LDAPS-port 636.
The client needs to be able to validate the certificate. For this
validation, the certificates which are sent by the server are used
(end-certificate, intermediates)
and last but not least the CA certificate is used. This builds up a
validation chain from the root-CA, intermediates up to the end-certificate.
As the client trusts the root-CA, it also can trust the servers
certificate (end-certificate).
Thanks & Regards,
Meka Rakesh.
On Sun, Sep 18, 2022, 4:46 PM Thomas Hoffmann (Speed4Trade GmbH)
<thomas.hoffm...@speed4trade.com.invalid> wrote:
Hello,
-----Ursprüngliche Nachricht-----
Von: rakesh meka <rakeshmeka67...@gmail.com>
Gesendet: Sonntag, 18. September 2022 11:53
An: Tomcat Users List <users@tomcat.apache.org>
Betreff: Re: HOW TO ENABLE LDAPS ON TOMCAT 8.5
Hi Thomas,
Good day
Thanks for the Response.
I'm not using self signed certificate. I have given the csr file to
our organization certificate admin team. And they got it signed by
some third party vendor and gave me root& intermediate &domain
certificate where I already installed them using keytool on server
side. However, I didn't
kept
those in Java truststore.
So I confirm that domain certificate is not self signed.
I got to know from one of my colleague that for LDAPs also we need
to generate certificate similarly like domain certificate. Is it
true? If
yes can you
let me how to generate the certificate for LDAPs.
Application: used by internal purpose Server : windows
server(actually LDAP authentication certificate is
already
configured with windows truststore itseems).
Thanks and Regards
Meka Rakesh.
All the certificates based on public/private key work the same.
Server needs private key and client needs public key(s).
The only difference is the meta-data attached to the public key which
then gets signed by a CA together with the public key.
The required meta-data (OID etc) is described here:
https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity
/enable-ldap-over-ssl-3rd-certification-authority
So for using a java client, you only need to ensure that the public
key/certificate of the signing CA (and intermediate certificates) are
available in the java truststore.
If correctly configured, the intermediate certificates are provided by
the server, thus only the CA certificate is required on the client
side.
Usually the CAs certificate and the intermediates are sent back
together with signed key (e.g. by verisign, thawte ...) You can also
open your LDAPs certificate on windows and take a look at the
certification tree. From there you can also double click on the needed
certificate and export it if needed.
Which certificates (intermediates) are provided by the server can be
checked via openssl.
Greetings, Thomas
On Sun, Sep 18, 2022, 12:31 PM Thomas Hoffmann (Speed4Trade GmbH)
<thomas.hoffm...@speed4trade.com.invalid> wrote:
Hello,
-----Ursprüngliche Nachricht-----
Von: rakesh meka <rakeshmeka67...@gmail.com>
Gesendet: Sonntag, 18. September 2022 05:03
An: Tomcat Users List <users@tomcat.apache.org>
Betreff: HOW TO ENABLE LDAPS ON TOMCAT 8.5
Hi All ,
Greetings for the day! Hope you are doing Great .
Currently of the application is deplye Don the tomcat 8.5 uses
LDAP
protocol
for AD authentication of sap users. I need to change the LDAP to
LDAPS.
So I
installed domain certificate using keytool. But when i change
the port number to 636 I see an error saying LDAP Connection has
been
closed.
I need your help to how to enable the process for
enabling/Changing
LDAPS.
Do I need to import the LDAP certificate to the tomcat
truststore and
then
import certificate to keystore ?
Thanks in Advance,
Meka Rakesh.
If you are using a self signed certificate on server-side, then
you need to import the corresponding certificate (signed public
key) to the java truststore.
Keystore is used for private keys and not relevant in this case.
Greetings, Thomas
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
