TCP Port Blocked

banto · 2022-03-02T17:23:20+00:00

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Hello,

is the TCP port 445 blocked in Outbound?

I need to connect to a Cloud service on 445 (SMB) but the connection does not work. It seems that port 445 is blocked..

Also, what is the list of blocked ports?

thanks

banto Welcome to the community!

For all modems, port 139 (outgoing) and port 445 (incoming and outgoing) are blocked by default on our CMTS for security reasons.

Greetings
Daniele

thanks Daniele_Sunrise . Is it blocked on the modem or by UPC ISP? Can I unblock it if it is on the modem?

thanks

banto We block this in our CMTS (own hardware where your modem logs in). You can not bypass this block.

Greetings
Daniele