IPFire 2.27 - Core Update 182 released
New Default Policy: Blocking Email Spammers
This release introduces a change in the default firewall policy for new installations: Blocking outgoing SMTP traffic from internal networks by default. We have recently seen that some installations have infected systems that send out large amounts of spam, resulting in unhappy consequences like having your firewall appear on blacklists and trouble logging into online banking.
We believe that this change that blocks any outgoing connections on port 25 (TCP) will stop this problem, as that port is only used for mailserver-to-mailserver communication. Client system will use Submission on port 578 or 465 instead and therefore this change should not cause any problems for almost all users, but block spam on the Internet. Existing installations won't see any changes.
IPFire 2.27 - Core Update 182 has been released. IPFire is a powerful and professional Open Source firewall solution.
