Accessing to remote Windows shared folder

Installing and Using OpenWrt
1

Hello,

I need to access to a remote windows shared folder, outside of my lan. But I can't. It seems the access to remote port 445 is locketd.

The address to access is something like \remote-computer\shared_folder

I've tried it with non-openWrt routers and it works.

Can anyone tell me what to configure to enable the access?

Regards

2

installed the samba client ?

3
  • Blocked by your ISP?
  • Accessing from where outside of LAN?

I ask because some ISPs block 445/tcp. If so, that's out of your control.

We need more details. For example, how did you connect this server to the non-OpenWrt routers, etc.

1 Like
5

The safest way to do this is using a road warrior VPN configuration. This will allow your remote devices to securely connect back to your home network, at which point they can access the Windows shared folder almost like they were present on the same network.

There are some nuances here, but you can take a look at the process. I recommend using Wireguard which is available on all major platforms, including OpenWrt.

https://openwrt.org/docs/guide-user/services/vpn/wireguard/road-warrior

6

At the end the reason was the ISP was blocking the access. Thanks for the idea.

1 Like
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It is unlikely that any SMB communication originating from the internet or destined for the internet is legitimate.

~ From: https://support.microsoft.com/en-us/topic/preventing-smb-traffic-from-lateral-connections-and-entering-or-leaving-the-network-c0541db7-2244-0dce-18fd-14a3ddeb282a

Security vulnerabilities have been found with both SMB and NetBIOS that allow remote users to gain control or execute malware on unprotected computers in home networks.

~From Page 10 (§3.1.3. NetBIOS and SMB – TCP/UDP139 and TCP/445) of: "Port Blocking - A BROADBAND INTERNET TECHNICAL ADVISORY GROUP TECHNICAL WORKING GROUP REPORT" (circa 2013) https://www.bitag.org/documents/Port-Blocking.pdf

You're welcome.

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