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I CANNOT ACCESS INTERNAL PORT WITH BRIDGE MODE.

Barnabas Amiolemen

My appologies. Ii have CISCO Router facing the ISP, I configured NAT and port forwarding on the CISCO ROUTER. All the staff can access the internet and also i am able to access the port that i opened for the external users. When I scanned, it shows port opened.

But, i now decided to introduce Sophos firewall in between the CISCO ROUTER and CISCO SWITCH so that i can do web and application filtering on my internal network. But now i cannot longer access the port that was opened before when the sophos was not introduced to the network. I try to do port scanning using nmap, but the result is that port filtered. 

What should i do?



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  • 0

    Hi,

    please edit this post it does  not make sense to me.

    Ian

    XG115W - v19.5.1 mr-1 - Home

    If a post solves your question please use the 'Verify Answer' button.

  • FormerMember
    0 FormerMember

    Hi ,

    Thank you for reaching out to Sophos Community.

    It could be an issue with NAT/firewall rule configuration. Request to share NAT/firewall rule snapshots.

    Also please confirm the external & internal ports which you used for translation/forwarding.

    DNAT/Port forward to an internal server

  • 0 in reply to FormerMember

    The above, WAN is the port connecting the cisco router interface  and LAN is the port connecting the cisco switch. Both WAN and LAN are both in bridge.

    THIS ONE ABOVE IS WORKING FINE FOR OTHER USERS. THEY CAN ACCESS INTERNET WITH

    THE BRIDGE CINFIG

  • 0 in reply to rfcat_vk

    My appologies. Ii have CISCO Router facing the ISP, I configured NAT and port forwarding on the CISCO ROUTER. All the staff can access the internet and also i am able to access the port that i opened for the external users. When I scanned, it shows port opened.

    But, i now decided to introduce Sophos firewall in between the CISCO ROUTER and CISCO SWITCH so that i can do web and application filtering on my internal network. But now i cannot longer access the port that was opened before when the sophos was not introduced to the network. I try to do port scanning using nmap, but the result is that port filtered. 

    What should i do?

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