Re: DNS requests error sending response: host unreachable

2012-03-14 Thread lst_hoe02
Zitat von Romgo ro...@free.fr: All right. this seems to correct the issue. But that's the first time I had to open the firewall for a packet answer. weird. It is a somewhat special case. UDP by itself is not stateful at all so any stateful firewall have to use some timeout values to

Re: DNS requests error sending response: host unreachable

2012-03-13 Thread Romgo
I see, but It should be statefull right ? On 12 March 2012 23:57, Mark Andrews ma...@isc.org wrote: In message caaoqnkg-xfkws_fen9kedub7w19vf4jocsfp52lb8ixv5+g...@mail.gmail.com , Romgo writes: Here is my Iptables configuration for bind : # prod.dns.in $IPTABLES -t filter -A

Re: DNS requests error sending response: host unreachable

2012-03-13 Thread lst_hoe02
Zitat von Romgo ro...@free.fr: I see, but It should be statefull right ? If using stateful UPD filtering you might get hit by short timeout values for UDP state matching, so packets get dropped if the query is too slow. Regards Andreas ___

Re: DNS requests error sending response: host unreachable

2012-03-13 Thread Romgo
All right. this seems to correct the issue. But that's the first time I had to open the firewall for a packet answer. weird. Thanks for the help. On 13 March 2012 10:19, lst_ho...@kwsoft.de wrote: Zitat von Romgo ro...@free.fr: I see, but It should be statefull right ? If using

DNS requests error sending response: host unreachable

2012-03-12 Thread Romgo
Dear community, I do have many error in my Bind's log file such as : client 192.168.201.1#29404: error sending response: host unreachable It seems that I have an iptables issue as each time I shut iptables I don't have anymore this message showing up. I saw that my firewall is dropping packets

Re: DNS requests error sending response: host unreachable

2012-03-12 Thread Chuck Swiger
On Mar 12, 2012, at 8:09 AM, Romgo wrote: Dear community, I do have many error in my Bind's log file such as : client 192.168.201.1#29404: error sending response: host unreachable It seems that I have an iptables issue as each time I shut iptables I don't have anymore this message

Re: DNS requests error sending response: host unreachable

2012-03-12 Thread Chuck Swiger
On Mar 12, 2012, at 1:24 PM, Romgo wrote: Here is my Iptables configuration for bind : # prod.dns.in $IPTABLES -t filter -A INPUT -j LOGACCEPT -p udp --dport 53 -i eth1-d 192.168.201.2 -s 0/0 $IPTABLES -t filter -A INPUT -j LOGACCEPT -p tcp --dport 53 -i eth1 -d 192.168.201.2 -s 0/0

Re: DNS requests error sending response: host unreachable

2012-03-12 Thread Romgo
Sorry, it has a space, I just made an error by copying. Yes 192.168.201.2 is dropped because it uses source port 53. I don't have any iptables rule for this. I don't understand why there is a packet with source port 53. On 12 March 2012 21:33, Chuck Swiger cswi...@mac.com wrote: On Mar 12,

Re: DNS requests error sending response: host unreachable

2012-03-12 Thread Mark Andrews
In message caaoqnkg-xfkws_fen9kedub7w19vf4jocsfp52lb8ixv5+g...@mail.gmail.com , Romgo writes: Here is my Iptables configuration for bind : # prod.dns.in $IPTABLES -t filter -A INPUT -j LOGACCEPT -p udp --dport 53 -i eth1-d 192.168.201.2 -s 0/0 $IPTABLES -t filter -A INPUT -j LOGACCEPT -p