Re: iptables recent / more than one exception

2012-05-05 Thread jdow
On 2012/05/04 23:42, Reindl Harald wrote: Am 05.05.2012 02:31, schrieb jdow: I don't know nessus. I am guessing that "-n 1000" part means 1000 trials and it's running as fast as it can go. The idea is to test up to your DDOS limit, wait 2 seconds, repeat. Can the test be hacked to keep your sy

Re: iptables recent / more than one exception

2012-05-04 Thread Reindl Harald
Am 05.05.2012 02:31, schrieb jdow: >>> I don't know nessus. I am guessing that "-n 1000" part means 1000 trials >>> and it's running as fast as it can go. The idea is to test up to your >>> DDOS limit, wait 2 seconds, repeat. Can the test be hacked to keep your >>> system at its limit but not ove

Re: iptables recent / more than one exception

2012-05-04 Thread jdow
On 2012/05/04 15:42, Reindl Harald wrote: Am 05.05.2012 00:31, schrieb jdow: with 75 instead of 100 evebn a "ab -c 4 -n 1000" is completly broken from outside the own network because "apache benchmark" thinks the host is dead after 83 connections and stops due too many errors - well, i guess e

Re: iptables recent / more than one exception

2012-05-04 Thread Reindl Harald
Am 05.05.2012 00:31, schrieb jdow: >> with 75 instead of 100 evebn a "ab -c 4 -n 1000" is completly >> broken from outside the own network because "apache benchmark" >> thinks the host is dead after 83 connections and stops due too >> many errors - well, i guess exactly that is the problem for >>

Re: iptables recent / more than one exception

2012-05-04 Thread jdow
On 2012/05/04 02:57, Reindl Harald wrote: Am 04.05.2012 11:37, schrieb jdow: But, then, I note your setting with --recent is not nearly as stringent as mine. Any given address gets one connection per minute to ssh. That VASTLY slows down dictionary attacks. Yours is a significant slow down; bu

Re: iptables recent / more than one exception

2012-05-04 Thread Reindl Harald
Am 04.05.2012 11:37, schrieb jdow: > But, then, I note your setting with --recent is not nearly as stringent as > mine. Any given address gets one connection per minute to ssh. That VASTLY > slows down dictionary attacks. Yours is a significant slow down; but, not > so much that somebody could no

Re: iptables recent / more than one exception

2012-05-04 Thread jdow
On 2012/05/04 01:15, Reindl Harald wrote: Am 04.05.2012 03:10, schrieb jdow: On 2012/05/03 10:57, Reindl Harald wrote: Am 03.05.2012 19:46, schrieb Paul W. Frields: On Thu, May 03, 2012 at 04:21:20PM +0200, Reindl Harald wrote: iptables -I INPUT -p tcp -i eth0 ! -s $LOCAL_NETWORK -m state

Re: iptables recent / more than one exception

2012-05-04 Thread Reindl Harald
Am 04.05.2012 03:10, schrieb jdow: > On 2012/05/03 10:57, Reindl Harald wrote: >> >> Am 03.05.2012 19:46, schrieb Paul W. Frields: >>> On Thu, May 03, 2012 at 04:21:20PM +0200, Reindl Harald wrote: iptables -I INPUT -p tcp -i eth0 ! -s $LOCAL_NETWORK -m state --state NEW -m recent --se

Re: iptables recent / more than one exception

2012-05-03 Thread jdow
On 2012/05/03 10:57, Reindl Harald wrote: Am 03.05.2012 19:46, schrieb Paul W. Frields: On Thu, May 03, 2012 at 04:21:20PM +0200, Reindl Harald wrote: is there any way to specify here more than one source-address (the usual comma seperated way does not work in this context) a complete ACCEPT

Re: iptables recent / more than one exception

2012-05-03 Thread Reindl Harald
Am 03.05.2012 19:46, schrieb Paul W. Frields: > On Thu, May 03, 2012 at 04:21:20PM +0200, Reindl Harald wrote: >> is there any way to specify here more than one source-address >> (the usual comma seperated way does not work in this context) >> >> a complete ACCEPT before is no solution because it

Re: iptables recent / more than one exception

2012-05-03 Thread Paul W. Frields
On Thu, May 03, 2012 at 04:21:20PM +0200, Reindl Harald wrote: > is there any way to specify here more than one source-address > (the usual comma seperated way does not work in this context) > > a complete ACCEPT before is no solution because it would bypass > any selective ACCEPT-rule > > iptabl

iptables recent / more than one exception

2012-05-03 Thread Reindl Harald
is there any way to specify here more than one source-address (the usual comma seperated way does not work in this context) a complete ACCEPT before is no solution because it would bypass any selective ACCEPT-rule iptables -I INPUT -p tcp -i eth0 ! -s $LOCAL_NETWORK -m state --state NEW -m recen