Re: subnet problem

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On Sunday 18 July 2004 9:50 pm, Mail Lists wrote:

>   I disallow iana reserved and some rfc 1918 from my firewall.
>
>   cRES_LDROP  all  --  172.16.0.0/12        0.0.0.0/0
>
>   which I would expect to block 172.16 to 172.31.
>
>   However I get these in my log files:
>
>   Jul 18 16:21:47 fw kernel:  [FW Drop-Res] IN=eth1 OUT= MAC=<xx>
> SRC=172.139.140.122 DST=<myip> LEN=48 TOS=0x00 PREC=0x00 TTL=109 ID=30189
> DF PROTO=TCP SPT=3477 DPT=1025 WINDOW=16384 RES=0x00 SYN URGP=0
>
>    I'm stumped - why did 172.139 get dropped here? Not that the packet
>  wouldn't have gotten dropped later anyway but this rule should not
>  have matched?
>
>  Suggestions?

Please post your ruleset so we can see everything relating to cRES_LDROP.

Regards,

Antony.

-- 
If you can't find an Open Source solution for it, then it isn't a real 
problem.

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