Why this ICMP call is blocked?

Kari Lempiainen <[email protected]>
Newsgroups gmane.comp.security.firewalls.firehol.user
Message-ID <CAD3GaphUBgBeAdi7cXJKkroDPczDNt3gS9vWZxUzsvENhvY0zw@mail.gmail.com>
Hi,


I feel stupid. I have a short program which sends a "Wake On Lan" packet to
a computer in my local network. Protocol is ICMP. The sending computer is
192.168.2.8 and target is 192.168.2.5. When I run my program I get “sendto:
Operation not permitted” and the syslog tells me this:

'firehol: 'OUT-myif1':'IN= OUT=eth0 SRC=192.168.2.8 DST=192.168.2.5 LEN=122
TOS=0x00 PREC=0x00 TTL=64 ID=52172 DF PROTO=ICMP TYPE=255 CODE=255


In my firehol.conf file I have:

interface eth0 myif1 src "192.168.2.0/24" dst 192.168.2.8

policy drop

[lines removed]

client all accept


Why the packet is dropped? Doesn’t "client all accept” mean that
192.168.2.8 can send anything?


Kari
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