ISS Proxy Login Error: "Unable to connect to Home Assistant"

Hi all,

I am trying to configure ISS Proxy which redirect to my Home Assistant web page (192.168.1.48:8123).

I am able to login my HA home page successfully via 192.168.1.48:8123, but displays “Unable to connect to Home Assistant.” error after entered same account and password via my server IP adress 10.0.2.15, as per screenshot below:
Home%20Assistant%20Error

[EDITED]:

Success Log For 192.168.1.48:8123:

2019-02-21 00:12:52 INFO (MainThread) [homeassistant.components.http.view] Serving / to 192.168.1.148 (auth: False)

2019-02-21 00:12:52 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/authorize to 192.168.1.148 (auth: False)

2019-02-21 00:12:52 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/providers to 192.168.1.148 (auth: False)

2019-02-21 00:12:52 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/login_flow to 192.168.1.148 (auth: False)

2019-02-21 00:12:59 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/login_flow/f122a8f453e4457fa180bbe65800a1df to 192.168.1.148 (auth: False)

2019-02-21 00:13:00 INFO (MainThread) [homeassistant.components.http.view] Serving / to 192.168.1.148 (auth: False)

2019-02-21 00:13:00 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/token to 192.168.1.148 (auth: False)

2019-02-21 00:13:00 INFO (MainThread) [homeassistant.components.http.view] Serving /api/websocket to 192.168.1.148 (auth: False)

2019-02-21 00:13:00 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Connected

2019-02-21 00:13:00 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Sending {'type': 'auth_required', 'ha_version': '0.87.1'}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'auth', 'access_token': 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiI1OTViYmUzNjBlZGU0NDlkOWM1NTc0NGJjYTgwYWFhZSIsImlhdCI6MTU1MDY3OTE4MCwiZXhwIjoxNTUwNjgwOTgwfQ.c8XfDmB59WICRqz1iFGISdMrARI3iPL6z-2fcLGMm-E'}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received access_token

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Auth OK

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Sending {'type': 'auth_ok', 'ha_version': '0.87.1'}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'subscribe_events', 'event_type': 'state_changed', 'id': 2}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Sending {'id': 2, 'type': 'result', 'success': True, 'result': None}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'get_states', 'id': 3}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'subscribe_events', 'event_type': 'component_loaded', 'id': 4}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'get_config', 'id': 5}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'subscribe_events', 'event_type': 'service_registered', 'id': 6}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'subscribe_events', 'event_type': 'service_removed', 'id': 7}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'get_services', 'id': 8}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'get_panels', 'id': 9}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'subscribe_events', 'event_type': 'themes_updated', 'id': 10}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'frontend/get_themes', 'id': 11}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'auth/current_user', 'id': 12}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Received {'type': 'frontend/get_translations', 'language': 'en', 'id': 13}

2019-02-21 00:13:01 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1855794672] Sending {'id': 3, 'type': 'result', 'success': True, 'result': [<state persistent_notification.notification=notifying; title=Welcome Home!, message=Here are some resources to get started:

Failed Log For 10.0.2.15:

2019-02-21 00:09:00 INFO (MainThread) [homeassistant.components.http.view] Serving / to 192.168.1.148 (auth: False)

2019-02-21 00:09:00 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/authorize to 192.168.1.148 (auth: False)

2019-02-21 00:09:00 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/providers to 192.168.1.148 (auth: False)

2019-02-21 00:09:00 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/login_flow to 192.168.1.148 (auth: False)

2019-02-21 00:09:06 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/login_flow/59056cdc8b064f978dd69f71b94b1fb4 to 192.168.1.148 (auth: False)

2019-02-21 00:09:08 INFO (MainThread) [homeassistant.components.http.view] Serving / to 192.168.1.148 (auth: False)

2019-02-21 00:09:08 INFO (MainThread) [homeassistant.components.http.view] Serving /auth/token to 192.168.1.148 (auth: False)

2019-02-21 00:09:08 INFO (MainThread) [homeassistant.components.http.view] Serving /api/websocket to 192.168.1.148 (auth: False)

2019-02-21 00:09:08 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1885835344] Connected

2019-02-21 00:09:08 DEBUG (MainThread) [homeassistant.components.websocket_api.http.connection.1885835344] Sending {'type': 'auth_required', 'ha_version': '0.87.1'}

2019-02-21 00:09:10 DEBUG (SyncWorker_3) [homeassistant.helpers.storage] Writing data for auth

2019-02-21 00:09:18 INFO (MainThread) [homeassistant.components.http.view] Serving /api/error_log to 192.168.1.148 (auth: True)

My ISS Proxy configuration,as per screenshot below:
ISS%20Inbound%20Rule

Coud anyone assist on this issue?

Thanks.