HI, I am trying to encrypt 389 ds traffic through ssl encryption but failing to start the server after enabling ssl encryption. Following are the steps that I have done do generate CA key/cert and csr(client).

1. vi /etc/pki/tls/openssl.cnf
####################################################################
[ CA_default ]

dir = /etc/pki/CA # Where everything is kept
certs = $dir/certs # Where the issued certs are kept
crl_dir = $dir/crl # Where the issued crl are kept
database = $dir/index.txt # database index file.
#unique_subject = no # Set to 'no' to allow creation of
# several ctificates with same subject.
new_certs_dir = $dir/newcerts # default place for new certs.

certificate = $dir/ca.crt # The CA certificate
serial = $dir/serial # The current serial number
crlnumber = $dir/crlnumber # the current crl number
# must be commented out to leave a V1 CRL
crl = $dir/ca.crl # The current CRL
private_key = $dir/private/ca.key # The private key
RANDFILE = $dir/private/.rand # private random number file
string_mask = pkix

2. cd /etc/pki/CA
( umask 077; openssl genrsa -out private/ca.key -des3 2048 )
( umask 077; openssl req -new -x509 -key private/ca.key -days 365 > ca.crt )

3. In directory server I am genrerating a csr and signing it by CA
openssl ca -in xx.csr -out xx.crt

4. Importing the Certificates to Database
certutil -A -d . -n CA -t CT,, -i /etc/pki/CA/ca.crt
certutil -A -d . -n CERT -t CT,, -i /etc/pki/CA/certs/xx.crt

5. Enabiling ssl encryption in config tab

6. Now when I am trying to restart 389 ds following error is displayed

/etc/init.d/dirsrv restart
Shutting down dirsrv:
view... [ OK ]
Starting dirsrv:
view...[21/Apr/2013:22:25:23 +051800] createprlistensockets - PR_Bind() on All Interfaces port 636 failed: Netscape Portable Runtime error -5982 (Local Network address is in use.)
[FAILED]
*** Error: 1 instance(s) failed to start

I have check whether any service is using port 636 with netstat command but no luck
#################################################################################################### ###
Please help me in resolving the issue.

Thanks

I have check whether any service is using port 636 with netstat command but no luck

what kind of "Luck" is involved here?? either something is using the port, which is what the error says, or it's not. Luck doesn't come into it.

netstat -plnt | grep 636

Note though that LDAPS is deprecated, and you should really be using STARTTLS over the standard 389 port anyway.

When I run the command netstat -ntpl | grep 636 I havent found any service using the port.

Are there any selinux errors? I wouldn't usually expect that exact port, but it could be the reason.