IPTables Problem: I think I figured it out... [was IPTables Established connection Problem]

From: Doubletwist (dontspam.doubletwist@spack.nu)
Date: 12/19/01 

From: Doubletwist <dontspam.doubletwist@spack.nu>
Date: 18 Dec 2001 23:26:54 GMT

Ok, I tried Ian Jone's suggestion of checking for buggy HW etc. Swapped
NICs which didn't help.

I then turned on Logging on just about every line. And I found that it
was dropping a lot of packets from a Class A network.

Turns out that though my workstation has a public IP, it is routed
through three hops that have a private IP. [not sure why]

So my server was dropping those connections.

the line in question is
iptables -A INPUT -i eth0 -s 10.0.0.0/8 -j DROP

but shouldn't that look just at the SOURCE address? Which should be
209.2.154.67...

Why would it kill my connections?

Thanks,
Doubletwist 

----
traceroute from 209.2.154.37 to 205.1.1.180

from 209.2.154.37
  1   <10 ms   <10 ms   <10 ms  10.98.52.1
  2   <10 ms   <10 ms    14 ms  209.220.153.177
  3   <10 ms   <10 ms   <10 ms  10.98.30.1
  4   <10 ms   <10 ms    14 ms  10.98.31.3
  5   <10 ms   <10 ms    14 ms  206.83.90.97
  6    13 ms   <10 ms    14 ms  198.68.76.55
  7   <10 ms    13 ms   <10 ms  64.0.0.129
  8    14 ms   <10 ms    13 ms  64.220.0.65
  9   <10 ms    14 ms   <10 ms  64.0.0.138
10   <10 ms    14 ms   <10 ms  205.1.0.38
11    14 ms   <10 ms   <10 ms  205.1.0.54
12    14 ms    14 ms   <10 ms  205.1.1.180

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