On Thu, May 03, 2007 at 02:26:32PM +0200, Pierguido wrote: > I'm using Etch a server and i want to configure bind. > After i've done everything i set up firehol (iptables parser) and > noticed that, when firehol is on, i cannot make any request to the > outside dns server. > > I checked the firehol log and i see: > > May 3 14:19:54 srv-web 'OUT-unknown:' IN= OUT=eth0 MAC= > SRC=192.168.100.2 DST=213.140.2.49 LEN=70 TOS=00 PREC=0x00 TTL=64 ID=0 > DF PROTO=UDP SPT=53 DPT=53 LEN=50
Yep - looks like an outgoing DNS query > OUT-unknown is the default rule for the OUTPUT chain (DROP). > > In my firehol setup for that interface i have these rules: > > policy drop > protection strong > server dns accept custom "--state NEW,ESTABLISHED" > server icmp accept > server http accept > server ftp accept > client all accept > > This is a result of many tryings, but all without success. > Now, as far as i can understand, it seems as the packet originated from > my dns server is not intercepted by any rule, going then to the default > one (DROP). Looking at the rules, I'd concur... > These are the rules: [big snip] > Chain OUTPUT (policy DROP) > target prot opt source destination > ACCEPT 0 -- 0.0.0.0/0 0.0.0.0/0 Strange: With this rule as the *first* rule in the OUTPUT chain, *everything* outgoing should be accepted, regardless of source, destination or protocol!? > out_lan 0 -- 192.168.30.103 0.0.0.0/0 > out_public_lan_124 0 -- 192.168.100.2 0.0.0.0/0 > out_public_lan_125 0 -- 192.168.100.5 0.0.0.0/0 > ACCEPT 0 -- 0.0.0.0/0 0.0.0.0/0 state RELATED > ULOG 0 -- 0.0.0.0/0 0.0.0.0/0 limit: avg 1/sec > burst 5 ULOG copy_range 0 nlgroup 1 prefix `'OUT-unknown:'' queue_threshold 1 And yet your log entry appears to be the result of this rule... > DROP 0 -- 0.0.0.0/0 0.0.0.0/0 Are you 100% sure that these were the rules in effect at the time of the log entry? It's not making sense ... -- Karl E. Jorgensen [EMAIL PROTECTED] http://www.jorgensen.org.uk/ [EMAIL PROTECTED] http://karl.jorgensen.com ==== Today's fortune: Things worth having are worth cheating for.
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