Blocking Port 445 outgoing causes VPN to not work

MBITMatt
New here

Blocking Port 445 outgoing causes VPN to not work

Hi All,

 

I feel like this is a fairly straightforward thing but I can't seem to pin it down.  

 

After the last Outlook Security issue I went ahead and double checked some firewall configurations.  I found 445 not blocked at some sites.  When a deny rule is setup VPN users cannot access shares.

 

Here's a screenshot of the basic config I did for Outgoing.

 

 

MBITMatt_0-1679945247397.png

 

 

VPN is configured as a basic L2TP connection to the Meraki itself.  Users are authenticated with Active Directory.

 

I think its something simple like just allowing my VPN users to use port 445 (they are on a different subnet when VPN'd in) but that doesn't seem to make it right.

 

Anyone else have this come up?

2 Replies 2
alemabrahao
Kind of a big deal

Why don't you create a rule allowing only local networks?

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

Please, if this post was useful, leave your kudos and mark it as solved.
MBITMatt
New here

I want to say when I did that I was still having problems with the VPN users.  I made sure that the local rule was above the deny all rule.

 

I'll double check this evening.

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