On 12. Jan 2012, at 07:29 , Alex Dupre wrote: > Bjoern A. Zeeb ha scritto: >> Need more input. A) why are using gif? B) are you using transport mode? > > I'm using gif, because the official FreeBSD documentation says so > (http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/ipsec.html). My > configuration is very similar to what described in that page. If that's not > the correct way, I'll fix the documentation after understanding the right > procedure.
It's not and hasn't been in ... I think there was someone fixing the documentation actually lately... I'll ping people and see where that went. > I'm using tunnel mode for network to network vpn. If you are using tunnel mode and gif you'll have trouble; just use tunnel mode without gif and you'll be happy. >> NAT before IPSEC can be done with ipfw, not with pf, don't know about >> ipfilter. > > Can you elaborate a little more about the reason ipfw can and pf cannot? Is > it because with ipfw/nat the packet is reinjected with the translated src IP > and so matched by SPD? Currently, with my setup and pf, I faced exactly these > two problems (SPD match before translation and i/o on different interfaces). It's because (our) pf cannot NAT on incoming but only on outgoing interfaces. And you need to NAT on packet entry into the system... > I think it's not so uncommon that the two networks may collide, so assigning > a "good" ip to one endpoint gateway and making NAT on it should be well > documentated in our handbook. If you give me a hint on how this could be > achieved with ipfw I'll update the docs accordingly. The answer is use IPv6 and ... oh wait.. not the answer you wanted to hear;) I haven't done it in probably 5 years or so now but basically you setup the nat on the incoming (probably your inside) interface and take care of localhost as much as needed. /bz -- Bjoern A. Zeeb You have to have visions! It does not matter how good you are. It matters what good you do! _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
