exclusion - Exclude a set of hosts from a definition in a shorewall6
Exclusion is used when you wish to exclude one or more addresses from a
definition. An exclamation point is followed by a comma-separated list of
addresses. The addresses may be single host addresses (e.g.,
fe80::2a0:ccff:fedb:31c4) or they may be network addresses in CIDR format
(e.g., fe80::2a0:ccff:fedb:31c4/64). If your kernel and ip6tables include
iprange support, you may also specify ranges of ip addresses of the form
No embedded white-space is allowed.
Exclusion can appear after a list of addresses and/or address ranges. In that
case, the final list of address is formed by taking the first list and then
removing the addresses defined in the exclusion.
Beginning in Shorewall 4.4.13, the second form of exclusion is allowed after
in the SOURCE and DEST columns of
/etc/shorewall/rules. It allows you to omit arbitrary zones from the list
generated by those key words.
If you omit a sub-zone and there is an explicit or explicit CONTINUE policy, a
connection to/from that zone can still be matched by the rule generated for a
#SOURCE DEST POLICY
z1 net CONTINUE
z2 net REJECT
#ACTION SOURCE DEST PROTO DEST
ACCEPT all!z2 net tcp 22
In this case, SSH connections from z2
will be accepted by
the generated z1
to net ACCEPT rule.
shorewall6(8), shorewall6-accounting(5), shorewall6-actions(5),
shorewall6-blacklist(5), shorewall6-hosts(5), shorewall6-interfaces(5),
shorewall6-policy(5), shorewall6-providers(5), shorewall6-rtrules(5),
shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5),
shorewall6-secmarks(5), shorewall6-tcclasses(5), shorewall6-tcdevices(5),
shorewall6-mangle(5), shorewall6-tos(5), shorewall6-tunnels(5),