From: Peter Müller Date: Sat, 4 Nov 2023 17:35:00 +0000 (+0000) Subject: firewall: Reject outgoing TCP connections to port 25 by default X-Git-Tag: v2.27-core182~16^2~95 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=726c4b0f4ab6cc53ccf0b756b585681591226966;p=ipfire-2.x.git firewall: Reject outgoing TCP connections to port 25 by default This will affect new IPFire installations only, implementing a long-standing BCP for preemptively combating botnet spam. Reject is chosen over drop to reduce the likelihood for confusion during network troubleshooting. Cc: Michael Tremer Signed-off-by: Peter Müller Tested-by: Peter Müller --- diff --git a/config/firewall/config b/config/firewall/config new file mode 100644 index 0000000000..c871576f29 --- /dev/null +++ b/config/firewall/config @@ -0,0 +1 @@ +1,REJECT,FORWARDFW,ON,std_net_src,ALL,std_net_tgt,RED,,TCP,,,ON,,,cust_srv,SMTP,Block port 25 (TCP) for outgoing connections to the internet,,,,,,,,,,00:00,00:00,,AUTO,,dnat,,,,,second diff --git a/lfs/configroot b/lfs/configroot index 2c09ae4a8b..66efe04b5f 100644 --- a/lfs/configroot +++ b/lfs/configroot @@ -1,7 +1,7 @@ ############################################################################### # # # IPFire.org - A linux based firewall # -# Copyright (C) 2007-2022 IPFire Team # +# Copyright (C) 2007-2023 IPFire Team # # # # This program is free software: you can redistribute it and/or modify # # it under the terms of the GNU General Public License as published by # @@ -64,7 +64,7 @@ $(TARGET) : for i in auth/users backup/include.user backup/exclude.user \ captive/settings captive/agb.txt captive/clients captive/voucher_out certs/index.txt certs/index.txt.attr ddns/config ddns/settings ddns/ipcache dhcp/settings \ dhcp/fixleases dhcp/advoptions dhcp/dhcpd.conf.local dns/settings dns/servers dnsforward/config ethernet/aliases ethernet/settings ethernet/known_nics ethernet/scanned_nics \ - ethernet/wireless extrahd/scan extrahd/devices extrahd/partitions extrahd/settings firewall/settings firewall/config firewall/locationblock firewall/input firewall/outgoing \ + ethernet/wireless extrahd/scan extrahd/devices extrahd/partitions extrahd/settings firewall/settings firewall/locationblock firewall/input firewall/outgoing \ fwhosts/customnetworks fwhosts/customhosts fwhosts/customgroups fwhosts/customservicegrp fwhosts/customlocationgrp fwlogs/ipsettings fwlogs/portsettings ipblocklist/modified \ ipblocklist/settings mac/settings main/hosts main/routing main/security main/settings optionsfw/settings \ ovpn/ccd.conf ovpn/ccdroute ovpn/ccdroute2 pakfire/settings portfw/config ppp/settings-1 ppp/settings-2 ppp/settings-3 ppp/settings-4 \ @@ -102,6 +102,7 @@ $(TARGET) : cp $(DIR_SRC)/config/cfgroot/logging-settings $(CONFIG_ROOT)/logging/settings cp $(DIR_SRC)/config/cfgroot/ethernet-vlans $(CONFIG_ROOT)/ethernet/vlans cp $(DIR_SRC)/langs/list $(CONFIG_ROOT)/langs/ + cp $(DIR_SRC)/config/firewall/config $(CONFIG_ROOT)/firewall/config cp $(DIR_SRC)/config/firewall/convert-xtaccess /usr/sbin/convert-xtaccess cp $(DIR_SRC)/config/firewall/convert-outgoingfw /usr/sbin/convert-outgoingfw cp $(DIR_SRC)/config/firewall/convert-dmz /usr/sbin/convert-dmz