[Firehol-support] Re: incoming requests from dsl modem?

Daniel Pittman daniel at rimspace.net
Sun Feb 13 08:04:51 GMT 2005

On 13 Feb 2005, afe0108 at yahoo.com wrote:
> Hello, thanks for writing such an amazing program!  My
> firehol.conf is simply:


> Everything works and I can't see anything when I port scan from
> another host.

Nice, isn't it.

> I have 2 questions- the first is what does HOL in fireHOL mean?

I will leave that to the author;  I don't know myself. :)

> The second is that I have 2 incoming requests from the dsl modem
> every 30 secs or so and I'm not sure if they're important?
> Feb 12 22:01:24 hostname IN-world:IN=eth0 OUT= MAC=<snip>
> SRC= DST= LEN=92 TOS=0x00 PREC=0x00

ICMP type 8 packets are part of the "ping" protocol - the "echo request"
part of it, specifically.

So, for whatever reason the cable modem is trying to ping
- presumably your machine - and the request is being dropped on the

Not really worrying, I think.

> Feb 12 22:01:40 hostname IN-world:IN=eth0 OUT= MAC=<snip>
> SRC= DST= LEN=576 TOS=0x00 PREC=0x00
> TTL=64 ID=36297 PROTO=UDP SPT=67 DPT=68 LEN=556

That is a part of the DHCP protocol.  Nothing to worry about at all.

Some television is so much chewing gum for the eyes.
        -- John Mason Brown

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