Re: Geofencing

2023-11-17 Thread Jochen Bern
On 17.11.23 11:18, Nick Lockheart wrote: If ranges are assigned to organizations, and you knew that you only wanted phone access, couldn't you enter the IP ranges assigned to T-Mobile, AT&T, etc as a firewall rule to allow, else deny? More precisely, you'd need only the IP pools used by their G

Re: Geofencing

2023-11-17 Thread Michael Peddemors
On 2023-11-17 02:18, Nick Lockheart wrote: My original reason for asking was, in addition to setting up a new mail server, there was a topic that came up about port scanning. My thought was, if the only people that need email services on ports 587 and 993 are employees, there might be a way to

Re: Geofencing

2023-11-17 Thread Tim Dickson via dovecot
recent versions of denyhosts offer protection for dovecot imap if enabled by scanning logs and adding firewall rules as well as hosts.deny rules. that may help On 17/11/2023 10:18, Nick Lockheart wrote: My original reason for asking was, in addition to setting up a new mail server, there was a

Re: Geofencing

2023-11-17 Thread Nick Lockheart
My original reason for asking was, in addition to setting up a new mail server, there was a topic that came up about port scanning. My thought was, if the only people that need email services on ports 587 and 993 are employees, there might be a way to close down access to those ports to reasonabl

Re: Geofencing

2023-11-16 Thread Paul Kudla (SCOM.CA Internet Services Inc.)
thanks for the insite, being an ISP I like this kind of info even if it is off topic a bit on the dovecot mail lists, security today is up there with opertional stuff. Have A Happy Thursday !!! Thanks - Paul Kudla (Manager SCOM.CA Internet Services Inc.) Scom.ca Internet Services