Re: iptables; some IPs are getting through netmasks

2012-12-24 Thread Richard Hector
On 24/12/12 05:41, Mark Ford wrote: My iptables is correct? - if so, how come the email comes through? I have the same problem with other /24 netmasks, for example when trying to block mail from Yell. I can't see anything wrong either. I'd start debugging by adding otherwise identical

iptables; some IPs are getting through netmasks

2012-12-23 Thread Mark Ford
I am hoping someone can help show me where I'm going wrong. I have iptables setup in the following way, basically, I am using the chain pests to drop data from certain IPs. Chain INPUT (policy ACCEPT) target prot opt source destination pests tcp -- 0.0.0.0/0

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Pascal Hambourg
Hello, Mark Ford a écrit : Chain INPUT (policy ACCEPT) target prot opt source destination pests tcp -- 0.0.0.0/00.0.0.0/0 [...] Chain pests (1 references) target prot opt source destination DROP tcp -- 1.85.17.0/24

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Mark Ford
Here is a shortened version of the output from iptables-save (full version simply has more -A pests lines). # Generated by iptables-save v1.4.8 on Sun Dec 23 16:24:43 2012 *filter :INPUT ACCEPT [252417:278747603] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [255016:258290199] :pests - [0:0] -A INPUT -p

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Pascal Hambourg
Mark Ford a écrit : Here is a shortened version of the output from iptables-save (full version simply has more -A pests lines). # Generated by iptables-save v1.4.8 on Sun Dec 23 16:24:43 2012 *filter :INPUT ACCEPT [252417:278747603] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [255016:258290199]

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Jonathan Matthews
On 23 December 2012 16:41, Mark Ford t447806929...@googlemail.com wrote: Here is a shortened version of the output from iptables-save (full version simply has more -A pests lines). # Generated by iptables-save v1.4.8 on Sun Dec 23 16:24:43 2012 *filter :INPUT ACCEPT [252417:278747603]

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Mark Ford
I've checked my mainlog and the originating ip appears to be exactly the same as the email header; 67.228.245.121 Could it be ip spoofing? How would they do that? Or maybe exim is somehow accepting connections over udp? - I'm clutching at straws! Hoping someone can help me solve this. Thank

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread John Hasler
Do you have an iptables rule somewhere that is allowing smtp? -- John Hasler -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87623ssc9u@thumper.dhh.gt.org

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Tom Furie
On Sun, Dec 23, 2012 at 05:10:45AM -0800, Mark Ford wrote: I am hoping someone can help show me where I'm going wrong. I have iptables setup in the following way, basically, I am using the chain pests to drop data from certain IPs. Chain INPUT (policy ACCEPT) target prot opt source

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Mark Ford
No other rules, see next post.. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/572de1d1-09a2-4adb-a3b1-ea1c031f3...@googlegroups.com

Re: iptables; some IPs are getting through netmasks

2012-12-23 Thread Mark Ford
Is the above your complete iptables ruleset? Is this ruleset on the mail server in question, or on a seperate box? If on a seperate box, is it acting as a router, are you doing any NAT? It's all on the same box. It's a complete ruleset except the additional DROP lines which are identical