Typically, implementing two factor authentication means buying tokens or smart cards for all of your users. This can be expensive (from what I have seen $50/user is typical in smaller deployments) and it is only manageable for users with whom you have an existing relationship (employees, in some cases customers). . So how do you implement two factor authentication for "cheap"? Here are a few methods I have seen used... The link for this article located at SANS is no longer available. . Investigate budget-friendly methods to establish two-step verification without relying on expensive hardware tokens. Uncover alternatives today!. Two Factor Authentication, Cost-Effective Security, User Authentication Methods. . LinuxSecurity.com Team
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