What are the limitations of Kerberos?

Biggest lose: assumption of secure time system, and resolution of synchronization required. Could be fixed by challenge-response protocol during auth handshake. Password guessing: no authentication is required to request a ticket, hence attacker can gather equivalent of /etc/passwd by requesting many tickets.

What is the problem with Kerberos?

Kerberos has a number of limitations and weaknesses; a decision to adopt or reject it cannot properly be made without considering these issues. (A limitation is a feature that is not as general as one might like, while a weakness could be exploited by an attacker to defeat the authentication mechanism.)

What are the advantages of Kerberos?

Kerberos is far from obsolete and has proven itself an adequate security-access control protocol, despite attackers’ ability to crack it. The primary advantage of Kerberos is the ability to use strong encryption algorithms to protect passwords and authentication tickets.

Which of the following is drawback of Kerberos?

Drawbacks and limitations Kerberos has strict time requirements, which means that the clocks of the involved hosts must be synchronized within configured limits. The tickets have a time availability period, and if the host clock is not synchronized with the Kerberos server clock, the authentication will fail.

What are the shortcoming of version 4 of Kerberos protocol?

“Kerberos version 4 tickets include neither a cryptographic hash of the encrypted data, random padding, nor a random initial vector. As such, if an attacker can cause the right text to be encrypted in a Kerberos service key, then the attacker can fabricate a ticket.

What is Kerberos authentication failure?

Event Description: This problem can occur when a domain controller doesn’t have a certificate installed for smart card authentication (for example, with a “Domain Controller” or “Domain Controller Authentication” template), the user’s password has expired, or the wrong password was provided.

What is Kerberos policy?

Kerberos is the default authentication policy used by Windows to authenticate computers and users on a Windows network. This section of account policies give you access to the customizable settings of Kerberos. In most cases you’ll want to stick with the defaults.

What is the main features of Kerberos?

Kerberos is a computer network security protocol that authenticates service requests between two or more trusted hosts across an untrusted network, like the internet. It uses secret-key cryptography and a trusted third party for authenticating client-server applications and verifying users’ identities.

Where is Kerberos used?

Although Kerberos is found everywhere in the digital world, it is employed heavily on secure systems that depend on reliable auditing and authentication features. Kerberos is used in Posix authentication, and Active Directory, NFS, and Samba. It’s also an alternative authentication system to SSH, POP, and SMTP.

What are the requirements of Kerberos?

As with all Kerberos installations, a Kerberos Key Distribution Center (KDC) is required. It needs to contain the user name and password you will use to be authenticated to Kerberos. Note: A KDC implementation is part of a Kerberos installation and not a part of the JDK.

Does LDAP use Kerberos?

Kerberos is a protocol that serves for network authentication. This is used for authenticating clients/servers in a network using a secret cryptography key….Difference between LDAP and Kerberos :