Frequently Asked Questions
| Question: | I am using multivendor network access servers for dial-up connectivity. Which authentication protocol is best? |
| Answer: | RADIUS is based on an open standard and is described in RFC 2058 and 2059. TACACS+ is a Cisco proprietary protocol that is not supported on all manufacturers' devices. If the devices support TACACS+, then use it. If not, use RADIUS. |
| Question: | What are the main differences between RADIUS and TACACS+? |
| Answer: | There are numerous differences between RADIUS and TACACS+. One main difference is that RADIUS is open source and TACACS+ is Cisco proprietary. TACACS+ generally has more features and is considered more secure. |
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