10-31-2017
What are these interfaces? That matters. If three interfaces are configured as a bridge, they might share the same MAC.
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LEARN ABOUT DEBIAN
shorewall-maclist
SHOREWALL-MACLIST(5) [FIXME: manual] SHOREWALL-MACLIST(5)
NAME
maclist - Shorewall MAC Verification file
SYNOPSIS
/etc/shorewall/maclist
DESCRIPTION
This file is used to define the MAC addresses and optionally their associated IP addresses to be allowed to use the specified interface.
The feature is enabled by using the maclist option in the shorewall-interfaces[1](5) or shorewall-hosts[2](5) configuration file.
The columns in the file are as follows (where the column name is followed by a different name in parentheses, the different name is used in
the alternate specification syntax).
DISPOSITION - {ACCEPT|DROP|REJECT}[:log-level]
ACCEPT or DROP (if MACLIST_TABLE=filter in shorewall.conf[3](5), then REJECT is also allowed). If specified, the log-level causes
packets matching the rule to be logged at that level.
INTERFACE - interface
Network interface to a host.
MAC - address
MAC address of the host -- you do not need to use the Shorewall format for MAC addresses here. If IP ADDRESSESES is supplied then MAC
can be supplied as a dash (-)
IP ADDRESSES (addresses) - [address[,address]...]
Optional - if specified, both the MAC and IP address must match. This column can contain a comma-separated list of host and/or subnet
addresses. If your kernel and iptables have iprange match support then IP address ranges are also allowed. Similarly, if your kernel
and iptables include ipset support than set names (prefixed by "+") are also allowed.
FILES
/etc/shorewall/maclist
SEE ALSO
http://shorewall.net/MAC_Validation.html
http://shorewall.net/configuration_file_basics.htm#Pairs
shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5),
shorewall-ipsets(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5), shorewall-policy(5),
shorewall-providers(5), shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5),
shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5),
shorewall-zones(5)
NOTES
1. shorewall-interfaces
http://www.shorewall.net/manpages/shorewall-interfaces.html
2. shorewall-hosts
http://www.shorewall.net/manpages/shorewall-hosts.html
3. shorewall.conf
http://www.shorewall.net/manpages/shorewall.conf.html
[FIXME: source] 06/28/2012 SHOREWALL-MACLIST(5)