Cisco ASA Disable ESMTP Inspection
Telnet to Exchange on Port 25 shows a row of Asterisks? KB ID 0000536 Problem Yesterday my colleague Ben called me over to the help-desk and asked “Have you ever seen this before?” This was what was on his screen. 220 *************************************************** Solution Usually when you Telnet to an Exchange server it gives you a 220 message followed by the “Banner” of the Exchange server, a little...
Exchange 2007 / 2010 change the SMTP Banner
KB ID 0000327 Problem If you want to shield the outside world from seeing what mail platform you are running, or even if you just want to deter the casual script kiddy who is trying to remote fingerprint a massive range of IP addresses. Changing the SMTP response banner is quite simple to do. Out of the box we know we are running a Microsoft mail platform Solution 1. Open Exchange System Manager and find the name of your...
Juniper SRX Firewall – Allow ‘Ping’
KB ID 0000706 Problem I was working on an SRX100B Firewall yesterday, and needed to be able to ping the outside interface. Solution Note: You can quickly enable ping on a physical interface from CLI like so; set security zone security-zone trust interface ge-0/0/0 host-inbound-traffic system services ping 1. Log into the web console of the Juniper. 2. Navigate to Security > Zones/Screen > Select the ‘Untrust’ Zone...