S series switches' support for Portal authentication

Portal authentication is also called web authentication. For S series switches (except the S1700), Portal authentication can be classified into built-in Portal authentication and external Portal authentication.
S series switches' support for external Portal authentication is as follows:
- In V100R006: Switches except the S2700SI, S2710SI, S2700EI, S2752EI, S5700LI, and S5700S-LI support external Portal authentication.
- In V200R001: Switches except the S5700LI and S5700S-LI support external Portal authentication.
- In V200R002: Switches except the S5700LI and S5700S-LI support external Portal authentication.
- In V200R003: Switches except the S2750EI, S5700LI, and S5700S-LI support external Portal authentication.
- In V200R005 and later versions: All switch models support external Portal authentication. In versions earlier than V200R007C00, the S2720EI, S2750EI, S5700-10P-LI-AC, and S5700-10P-PWR-LI-AC support built-in Portal authentication only. In V200R007C00 and later versions, the S2720EI, S2750EI, S5700-10P-LI-AC, and S5700-10P-PWR-LI-AC that have Layer 3 hardware forwarding of IPv4 packets enabled support external Portal authentication.
Only S series fixed switches support built-in Portal authentication.

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