my problem is a verry strange one, so i think i did a configuration failure. But i can't find him.
i made a listung of my iptables rules using the -L parameter and finaly a tcpdump wich should show you, that dhcp is working - well i couldnt post hte windowsxp bubble wich says that i got a wunderfull wlan connection...
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Antifreeze:~# date;iptables -L;date;iptables -t nat -L;date;iptables -t mangle -L;date;tcpdump -i eth0 udp Mon Mar 7 14:50:57 CET 2005 Chain INPUT (policy DROP) target prot opt source destination ACCEPT tcp -- anywhere anywhere tcp dpt:64385 state NEW,ESTABLISHED
Chain FORWARD (policy ACCEPT) target prot opt source destination
Chain OUTPUT (policy DROP) target prot opt source destination ACCEPT tcp -- anywhere anywhere tcp spt:64385 state ESTABLISHED Mon Mar 7 14:50:57 CET 2005 Chain PREROUTING (policy ACCEPT) target prot opt source destination
Chain POSTROUTING (policy ACCEPT) target prot opt source destination
Chain OUTPUT (policy ACCEPT) target prot opt source destination Mon Mar 7 14:50:57 CET 2005 Chain PREROUTING (policy ACCEPT) target prot opt source destination
Chain INPUT (policy ACCEPT) target prot opt source destination
Chain FORWARD (policy ACCEPT) target prot opt source destination
Chain OUTPUT (policy ACCEPT) target prot opt source destination
Chain POSTROUTING (policy ACCEPT) target prot opt source destination Mon Mar 7 14:50:57 CET 2005 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 14:51:10.965603 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:0f:cb:ad:75:a8, length: 300 14:51:10.966600 IP Antifreeze.lan.bootps > 192.168.0.19.bootpc: BOOTP/DHCP, Reply, length: 300 14:51:10.975221 IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, Request from 00:0f:cb:ad:75:a8, length: 322 14:51:10.978049 IP Antifreeze.lan.bootps > 192.168.0.19.bootpc: BOOTP/DHCP, Reply, length: 300
4 packets captured 4 packets received by filter 0 packets dropped by kernel ------------------------------------------------
Ok, i would be verry happy if anyone could help me blocking the dhcp server that i can trust iptables again. regards
richard hauswald
