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, etc
as a firewall rule to allow, else deny?
More precisely, you'd need only the IP pools used by their
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
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
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
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
On 16.11.23 16:56, Paul Kudla wrote:
the ip that triggered all this says it is allocated from NL
(Neatherlands) but physicaly exists in Hawii ?
As someone working for a LIR, let me clarify a couple things:
IPs get assigned to organizations. The registered contacts may well be
that
