Open port on firewall to allow access Web Server ( https )
1. Prepare
DC21 : Domain Controller (pns.vn), IP 10.0.0.21 | DC22 : Terminal Server , IP 10.0.0.22
ASA : Cisco ASA 8.42 , IP management 10.0.0.100
DC23 : Web Server , IP 10.0.0.23 | WIN1091 : Client , IP 10.0.2.92 ( LAN2 )
2. Step by step : Open port on firewall to allow WIN1091 access to Website on DC23 ( Port 443 )
DC22 : Internet Explorer - https://10.0.0.23 === OK
WIN1091 : Test access Website
Internet Explorer - https://10.0.0.23 === cannot access
Start - cmd - ping 10.0.0.23 === OK
Telnet 10.0.0.23 443 === Connect failed
DC22 : Open port 443 on firewall
Access the Cisco ASA using ASDM :
Configuration tab - Firewall - Right-click LAN2 - Add Access Rule...
Action : Permit
Source : 10.0.2.91
Destination : 10.0.0.23
Service : - tcp-udp/443 - OK
Description : Access Web === OK - Apply
WIN1091 : Test access Web Server
Start - run - cmd - Telnet 10.0.0.23 443 === OK
Internet Explorer - https://10.0.0.23 === OK === OK
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