Re: ipfw and tun0

2005-07-24 Thread Dirk GOUDERS
> > Well, I am a little bit confused, because usually, I run machines with > > "real" NICs and if I activate firewall rules that drop packets from > > that NIC, I can run tcpdump on that NIC and will not see the dropped > > packets. > > Are you 100% certain of that? No, I now realize, that

Re: ipfw and tun0

2005-07-24 Thread Chuck Swiger
Dirk GOUDERS wrote: [ ... ] If you are using PPPoE, the system de-encapsulates the IP traffic off of the PPP session via the tun0 interface. tun0 can be treated as your "external interface" when writing firewall rules, setting up NAT, etc. Well, I am a little bit confused, because usually, I

Re: ipfw and tun0

2005-07-24 Thread Dirk GOUDERS
> >>> I just started to use an ADSL line with PPPoE and want run a firewall > >>> between it and my local network. What I am wondering about is that even > >>> if I only have the default everything-blocking rule (deny ip from any to > >>> any) I still see incoming packets on tun0 with tcpdump

Re: ipfw and tun0

2005-07-22 Thread Chuck Swiger
Dirk GOUDERS wrote: I just started to use an ADSL line with PPPoE and want run a firewall between it and my local network. What I am wondering about is that even if I only have the default everything-blocking rule (deny ip from any to any) I still see incoming packets on tun0 with tcpdump. If

Re: ipfw and tun0

2005-07-22 Thread Dirk GOUDERS
> >I just started to use an ADSL line with PPPoE and want run a firewall > >between it and my local network. What I am wondering about is that > >even if I only have the default everything-blocking rule (deny ip from > >any to any) I still see incoming packets on tun0 with tcpdump. > > > >I

Re: ipfw and tun0

2005-07-21 Thread Kevin Kinsey
Dirk Gouders wrote: >Hello, > >I just started to use an ADSL line with PPPoE and want run a firewall >between it and my local network. What I am wondering about is that >even if I only have the default everything-blocking rule (deny ip from >any to any) I still see incoming packets on tun0 with t

ipfw and tun0

2005-07-21 Thread Dirk Gouders
Hello, I just started to use an ADSL line with PPPoE and want run a firewall between it and my local network. What I am wondering about is that even if I only have the default everything-blocking rule (deny ip from any to any) I still see incoming packets on tun0 with tcpdump. Is this, because t