About F19 Firewall
tomek at pipebreaker.pl
Sun Sep 15 19:06:09 UTC 2013
On Mon, Sep 16, 2013 at 02:52:07AM +0800, P J P wrote:
> I upgraded to F19 recently. And I happened to look at the output of iptables(8) today.
> $ iptables -nL
> It's baffling! It's crazy 4 pages long listing!!
You seem to have missed this Fedora *18* feature:
> are there so many chains? Most are empty. Those which have rules, jump
> from one chain to another and that jumps to yet another.
firewall-cmd is supposed to isolate user from all this chains.
> DNS is allowed in the internal network(chain IN_internal_allow). I
> guess IN_internal_allow is meant for some closed group internal
> network, not sure.
> ACCEPT udp -- 0.0.0.0/0 126.96.36.199 udp dpt:5353 ctstate NEW
> Who uses it?
That's mDNS, widely used in zeroconf discovery (for example, printers).
Tomasz Torcz "Funeral in the morning, IDE hacking
xmpp: zdzichubg at chrome.pl in the afternoon and evening." - Alan Cox
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