After upgrading from ESXi 5.5 with SSLv3 protocol enabled by configuration is retained on ESXi 6.0 (60P02 onwards). You can disable SSLv3 on ESXi 6.x after an upgrading from ESXi 5.5.X.
Resolution
Steps to disable SSLv3 on ESXi 6.0 Update 2 & Update 3
Hostd – Port 443
Login to ESXi using putty.exe.
Run the following command to disable SSLv3 protocol: esxcli system settings advanced set -o /UserVars/ESXiRhttpproxyDisabledProtocols -s "sslv3"
Restart the /etc/init.d/rhttpproxy service.
Authd – Port 902
Login to ESXi using putty.exe.
Run the following command to disable SSLv3 protocol: esxcli system settings advanced set -o /UserVars/VMAuthdDisabledProtocols -s "sslv3"
CIM – Port 5989
Login to ESXi using putty.exe.
Disable SSLv3 protocol by appending below line in /etc/sfcb/sfcb.cfg: enableSSLv3: false
Restart the /etc/init.d/sfcbd-watchdog service.
Virtual SAN VP – Port 8080
Login to ESXi using putty.exe.
Run the following command to disable SSLv3 protocol: esxcli system settings advanced set -o /UserVars/ESXiVPsDisabledProtocols -s "sslv3"
Restart the /etc/init.d/vsanvpd service.
IOFilter – Port 9080
Login to ESXi using putty.exe.
Run the following command to disable SSLv3 protocol: esxcli system settings advanced set -o /UserVars/ESXiVPsDisabledProtocols -s "sslv3"