That's a good list to start with.
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
----- Original Message -----
From: "That One Guy /sarcasm" <thatoneguyst...@gmail.com>
Sent: Monday, September 19, 2016 11:57:44 AM
Subject: Re: [AFMUG] everyone should be blocking SMB ports
Whats the WISP consensus on blocking those ports at the edge? also, whats the
best religion? if Ford or Chevy better? Whats the greatest sports team?
On Mon, Sep 19, 2016 at 11:50 AM, Zach Underwood < zunder1...@gmail.com >
My work has its own IP address and get upstream from atnt and charter. The smb
ports are not blocked.
Zach Underwood (RHCE,RHCSA,RHCT,UACA)
On Sep 19, 2016 12:47 PM, "Josh Luthman" < j...@imaginenetworksllc.com > wrote:
WISP? I dunno...
1100 Wayne St
Troy, OH 45373
On Mon, Sep 19, 2016 at 12:47 PM, Sean Heskett < af...@zirkel.us > wrote:
i think everyone has been blocking those ports since 1998-ish (or at least you
On Mon, Sep 19, 2016 at 10:22 AM, Zach Underwood < zunder1...@gmail.com >
This was written from the view point of windows AD setup can affect home users
too since MS makes people use MS live accounts to log in to windows.
Outside servers can get username/domain/password hash. Once a remote server has
the login info they could connect to VPN, Office365 or an other service that
using AD domain user info.
See attachment for example. I got the example from a VM with a test account on
Microsoft based browsers like IE and Edge can be induced to make a outbound smb
connection to a remote server. In this connection Microsoft will send over
username, domain, and password hash. The remote server then can do a decryption
of the password hash using brute force, password, dictionary and rainbow
The fastest way to stop this is to block all of the smb networks ports on the
edge firewall for incoming and outgoing. The ports are 137-138udp,
Testing site :
Zach Underwood (RHCE,RHCSA,RHCT, UACA )
If you only see yourself as part of the team but you don't see your team as
part of yourself you have already failed as part of the team.