Hi gays i don''t understand the difference between route and nat is there any place where I study the difference? I''m sorry for my bad english thanks a lot riccardo marfisi _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
rmarfisi@inwind.it wrote:> i don''t understand the difference between route and nat > >http://www.google.com/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=what+is+nat Briefly, routing is the process that decides where an IP packet should go to next. NAT, on the other hand, re-writes the IP packet source or destination address. "NAT" is short for "Network Address Translation" and is typically used to hide machines behind firewalls (source-NAT, SNAT) or redirect traffic to some other machine (destination-NAT, DNAT, sometimes called port-forward).> I''m sorry for my bad english >Your English is much, much better than my Italian! jch _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 8/13/08, John Haxby <john.haxby@oracle.com> wrote:> rmarfisi@inwind.it wrote: >> i don''t understand the difference between route and nat >> >> > http://www.google.com/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=what+is+nat > > Briefly, routing is the process that decides where an IP packet should > go to next. NAT, on the other hand, re-writes the IP packet source or > destination address. "NAT" is short for "Network Address Translation" > and is typically used to hide machines behind firewalls (source-NAT, > SNAT) or redirect traffic to some other machine (destination-NAT, DNAT, > sometimes called port-forward).I think question is in context of route and nat configuration of "/etc/xen/xend-config.sxp" nat configruation basically add some iptable rules on dom0 to perform the address translation on the packet generated from domU to keep domU address as private network. route configuration chnages the bridge (networking link between dom0 and domU) to act as router. Following link could be useful to understand the route and nat configuration. http://wiki.kartbuilding.net/index.php/Xen_Networking> >> I''m sorry for my bad english >> > Your English is much, much better than my Italian! > > jch > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
rmarfisi@inwind.it wrote:> Hi gays > > i don''t understand the difference between route and nat > > is there any > place where I study the difference? > > I''m sorry for my bad english > > thanks a lot > > riccardo marfisi > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > >If you know a bit of scripting, you can explore /etc/xen/scripts/network-nat, /etc/xen/scritps/network-router and /etc/xen/scripts/network-bridge to see how this is implemented to enabled networking in xen. Location of these scripts may be different in later xen releases. My suggestions are based on RHEL5 or Centos5. --Sadique _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users