anupambordoloi.local: Reading configuration data /Users/anupam.bordolo
+i/.ssh/config
anupambordoloi.local: Reading configuration data /etc/ssh_config
anupambordoloi.local: Connecting to 192.168.112.191, port 22.
anupambordoloi.local: Remote version string: SSH-2.0-OpenSSH_5.3

anupambordoloi.local: Remote protocol version 2.0, remote software ver
+sion OpenSSH_5.3
anupambordoloi.local: Net::SSH::Perl Version 1.36, protocol version 2.
+0.
.nupambordoloi.local: No compat match: OpenSSH_5.3
anupambordoloi.local: Connection established.
anupambordoloi.local: Sent key-exchange init (KEXINIT), wait response.
anupambordoloi.local: Algorithms, c->s: 3des-cbc hmac-sha1 none
anupambordoloi.local: Algorithms, s->c: 3des-cbc hmac-sha1 none
anupambordoloi.local: Entering Diffie-Hellman Group 1 key exchange.
anupambordoloi.local: Sent DH public key, waiting for reply.
anupambordoloi.local: Received host key, type 'ssh-dss'.
anupambordoloi.local: Host '192.168.112.191' is known and matches the 
+host key.
anupambordoloi.local: Computing shared secret key.
anupambordoloi.local: Verifying server signature.
anupambordoloi.local: Waiting for NEWKEYS message.
anupambordoloi.local: Send NEWKEYS.
anupambordoloi.local: Enabling encryption/MAC/compression.
anupambordoloi.local: Sending request for user-authentication service.
anupambordoloi.local: Service accepted: ssh-userauth.
anupambordoloi.local: Trying empty user-authentication request.
anupambordoloi.local: Authentication methods that can continue: public
+key,keyboard-interactive.
anupambordoloi.local: Next method to try is publickey.
Permission denied at net_ssh_perl.pl line 12.
[download]

This smells like a password problem. Please change

my $pass = "admin\@123";

into

my $pass = 'admin@123';

and try again.

(If you put the password into single quotes then perl won't try to parse your string.)

Thanks Thomas for your reply. I had already checked the same but it did not work :(