topic Cisco Secure ACS in Network Access Control https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104034#M9824 <P>Can users be authenticated using CSACS before receiving an IP address from DHCP?</P> Fri, 21 Feb 2020 17:57:36 GMT eoscar 2020-02-21T17:57:36Z Cisco Secure ACS https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104034#M9824 <P>Can users be authenticated using CSACS before receiving an IP address from DHCP?</P> Fri, 21 Feb 2020 17:57:36 GMT https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104034#M9824 eoscar 2020-02-21T17:57:36Z Re: Cisco Secure ACS https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104035#M9825 <HTML><HEAD></HEAD><BODY><P>No. They need an ip address to get to the server. What are you trying to accomplish?</P></BODY></HTML> Tue, 30 Oct 2001 14:58:09 GMT https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104035#M9825 p.krane 2001-10-30T14:58:09Z Re: Cisco Secure ACS https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104036#M9826 <HTML><HEAD></HEAD><BODY><P>Not true, the NAS\ CAS sends the authentication requests to ACS on behalf of the user. If the NAS\ CAS is DHCPing prior to authentication, then the config is wrong.</P><P></P><P>You can force the situation of authentication then DHCP, by making the ACS the dhcp server (ip pools). You need to enable authorisation on the NAS\ CAS otherwise it ignores the ACS suggestion of an IP address.</P></BODY></HTML> Tue, 30 Oct 2001 19:50:42 GMT https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104036#M9826 p.jacques 2001-10-30T19:50:42Z Re: Cisco Secure ACS https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104037#M9827 <HTML><HEAD></HEAD><BODY><P>This makes more sense. So, on the CSACS i would install a dhcp server.</P><P></P><P>But, I would like to run dhcp(collapse core swich) and CSACS on diffrent boxes and be able to achieve exactly what you explained in you response.</P><P></P><P></P></BODY></HTML> Fri, 02 Nov 2001 16:58:15 GMT https://community.cisco.com/t5/network-access-control/cisco-secure-acs/m-p/104037#M9827 e-oscar 2001-11-02T16:58:15Z