[email protected] wrote:
> [email protected] wrote:
>> [email protected] wrote:
>>> Is it possible to create rules that apply to specific codes of ICMP
>> types?
>>> The AllowICMPs macro seems to have this type of precision for ICMP
>> type 3 code 4.
>>> How can I write a rule that has this kind of precision for arbitrary
>> ICMP types/codes?
>>
>> The same way as the macro does.
>>
> 
> The macro appears to use keywords: 'fragmentation-needed' and 'time-exceeded'
> 
> Where can I find where these are defined?  Or, is there a list acceptable 
> keywords?
> 
> I grepped /etc/shorewall and /usr/share/shorewall but nothing came up.

From /usr/share/shorewall/Shorewall/IPAddrs.pm, here is the list of
keywords and their corresponding codes:

my %icmp_types = ( any                          => 'any',
                   'echo-reply'                 => 0,
                   'destination-unreachable'    => 3,
                   'network-unreachable'        => '3/0',
                   'host-unreachable'           => '3/1',
                   'protocol-unreachable'       => '3/2',
                   'port-unreachable'           => '3/3',
                   'fragmentation-needed'       => '3/4',
                   'source-route-failed'        => '3/5',
                   'network-unknown'            => '3/6',
                   'host-unknown'               => '3/7',
                   'network-prohibited'         => '3/9',
                   'host-prohibited'            => '3/10',
                   'TOS-network-unreachable'    => '3/11',
                   'TOS-host-unreachable'       => '3/12',
                   'communication-prohibited'   => '3/13',
                   'host-precedence-violation'  => '3/14',
                   'precedence-cutoff'          => '3/15',
                   'source-quench'              => 4,
                   'redirect'                   => 5,
                   'network-redirect'           => '5/0',
                   'host-redirect'              => '5/1',
                   'TOS-network-redirect'       => '5/2',
                   'TOS-host-redirect'          => '5/3',
                   'echo-request'               => '8',
                   'router-advertisement'       => 9,
                   'router-solicitation'        => 10,
                   'time-exceeded'              => 11,
                   'ttl-zero-during-transit'    => '11/0',
                   'ttl-zero-during-reassembly' => '11/1',
                   'parameter-problem'          => 12,
                   'ip-header-bad'              => '12/0',
                   'required-option-missing'    => '12/1',
                   'timestamp-request'          => 13,
                   'timestamp-reply'            => 14,
                   'address-mask-request'       => 17,
                   'address-mask-reply'         => 18 );

-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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