Netfilter extention to make filtering decisions based on Modbus/TCP headers, such as function code, unit id and reference number. Modbus/TCP is a widely used industrial ethernet protocol.
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We had time to work on modbusfw again so we fixed the following bugs submitted by Matt Franz 1. Fixed the kernel space patch to contain ipt_modbus.h 2. Added userspace.1.2.9 for compatibility with iptables 1.2.9 (thanks to Matt Franz) Also we have a ISO based on Trinux (a bootable Linux distro, does not install anything on to the harddrive) with all the precomiled kernel and userspace binaries. you should be able to make a CD out of the ISO, boot the CD up and you should have your modbus firewall tools to go. Thanks, -Venkat Pothamsetty.
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