shorewall-blacklist(5)

NAME

blacklist - Shorewall Blacklist file

/etc/shorewall/blacklist

The blacklist file is used to perform static blacklisting. You can
blacklist by source address (IP or MAC), or by application.

The columns in the file are as follows.

ADDRESS/SUBNET - {-|~mac-address|ip-address|address-range|+ipset}: Host address, network address, MAC address, IP address range (if
your kernel and iptables contain iprange match support) or ipset
name prefaced by "+" (if your kernel supports ipset match).; MAC addresses must be prefixed with "~" and use "-" as a separator.; Example: ~00-A0-C9-15-39-78; A dash ("-") in this column means that any source address will
match. This is useful if you want to blacklist a particular
application using entries in the PROTOCOL and PORTS columns.
PROTOCOL (Optional) - {-|protocol-number|protocol-name}: If specified, must be a protocol number or a protocol name from
protocols(5).
PORTS (Optional) - {-|port-name-or-number[,port-name-or-number]...}: May only be specified if the protocol is TCP (6) or UDP (17). A
comma-separated list of destination port numbers or service names
from services(5).
When a packet arrives on an interface that has the blacklist option specified in shorewall-interfaces[1](5), its source IP address and MAC address is checked against this file and disposed of according to the
BLACKLIST_DISPOSITION and BLACKLIST_LOGLEVEL variables in shorewall.conf[2](5). If PROTOCOL or PROTOCOL and PORTS are supplied, only packets matching the protocol (and one of the ports if PORTS supplied) are blocked.

Example 1:: To block DNS queries from address 192.0.2.126:

#ADDRESS/SUBNET PROTOCOL PORT
192.0.2.126 udp 53
Example 2:: To block some of the nuisance applications:

#ADDRESS/SUBNET PROTOCOL PORT
- udp 1024:1033,1434 - tcp 57,1433,1434,2401,2745,3127,3306,3410,4899,5554,6101,8081,9898

/etc/shorewall/blacklist

1. shorewall-interfaces: shorewall-interfaces.html; 2. shorewall.conf
shorewall.conf.html