Messages in this thread | | | Date | Sun, 17 May 1998 18:28:11 +0200 | From | Steffen Zahn <> | Subject | Re: PRIV: 2.1.102: ipchains: REJECT does only DENY - network gurus please |
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>>>>> "ak" == ak <ak@muc.de> writes:
ak> Why use firewalling at all then? The forwarder will send a ak> DEST_UNREACHable when it can't find a route automatically. In ak> extreme cases you could use a reject route.
Well, I don't find the above statement to be the case (in 2.1.102). If I set all firewall chains to ACCEPT, i.e. ipchains -L gives: Chain input (policy ACCEPT): Chain forward (policy ACCEPT): Chain output (policy ACCEPT):
then the packets from the client taliesin to the unreachable DNS server berlin.snafu.de via the server zahn get no negative ack.
tcpdump in this case:
17:17:38.288219 arp who-has zahn tell taliesin 17:17:38.288370 arp reply zahn is-at 0:60:97:b4:8:83 17:17:38.288541 taliesin.1029 > berlin.snafu.de.nameserver: 1+ (37) 17:17:43.321813 taliesin.1029 > berlin.snafu.de.nameserver: 1+ (37)
Regards Steffen
-- home email: user@domain where domain=berlin.snafu.de, user=zahn Use of my address for unsolicited commercial advertising is forbidden. 2^3021377 - 1 | "Where do you want to crash today?"
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