Microsoft
Software
Hardware
Network
Question : Need to lock down SMTP traffic - Urgent!
Hi Experts, sorry to spring an urgent request on you. We've had an Admin guy make changes to our ASA firewall & we are accepting SMTP traffic from anywhere rather than Messagelabs (our mail scanners).
ML's have suspended outbound mail until I lock down SMTP traffic so, I need to configure my ASA to allow SMTP traffic in from the following IP range only:
216.82.240.0 255.255.240.0 /20 216.82.240.0 - 216.82.255.255
67.219.240.0 255.255.240.0 /20 67.219.240.0 - 67.219.255.255
85.158.136.0 255.255.248.0 /21 85.158.136.0 - 85.158.143.255
95.131.104.0 255.255.248.0 /21 95.131.104.0 - 95.131.111.255
117.120.16.0 255.255.248.0 /21 117.120.16.0 - 117.120.23.255
193.109.254.0 255.255.254.0 /23 193.109.254.0 - 193.109.255.255
194.106.220.0 255.255.254.0 /23 194.106.220.0 - 194.106.221.255
195.245.230.0 255.255.254.0 /23 195.245.230.0 - 195.245.231.255
Could you let me know the syntax please?
Many thanks in advance.
Answer : Need to lock down SMTP traffic - Urgent!
hi,
show ip access-list and see the current running enties , may be the entry for line 12 is not matching.
Random Solutions
Get DNS to clients when using IPV6 Stateless configuration
Emails sent as BCC
Where to download AIX base filesets
video files
Why Not able to read excel file in the Web application running on Windows7/Office2010?
SCCM Software Report By Major Revision
VLAN 2 on 3Com 5500 with fiber SFP causes problems on default VLAN 1
Setting Up Exchange Email on Apple IPAD
How do I rotate a video file
Wireless Access Point - Hard Plastics Protective Cover