Re: Routing zwischen Netzen (ueber OpenVPN)
Hallo Martin,
Martin Reising wrote:
> On Fri, Mar 07, 2008 at 01:00:04PM +0100, Michael Hierweck wrote:
>>>>>>> route -n
>> Kernel IP routing table
>> Destination Gateway Genmask Flags Metric Ref Use
>> Iface
>> 192.168.222.2 0.0.0.0 255.255.255.255 UH 0 0 0 tun0
>> 192.168.100.0 192.168.222.2 255.255.255.0 UG 0 0 0 tun0
>> 192.168.200.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>> 192.168.222.0 192.168.222.2 255.255.255.0 UG 0 0 0 tun0
>> 0.0.0.0 192.168.200.250 0.0.0.0 UG 0 0 0 eth0
>
> Was gibt denn
>
> cat /proc/sys/net/ipv4/ip_forward
> cat /proc/sys/net/ipv4/conf/*/forwarding
> ls -l /proc/sys/net/ipv4/conf/*/forwarding
>
> auf Client und Server aus?
>
>>>>>>>> ping 192.168.100.100
>> PING 192.168.100.100 (192.168.100.100) 56(84) bytes of data.
>>
>> --- 192.168.100.100 ping statistics ---
>> 3 packets transmitted, 0 received, 100% packet loss, time 2000ms
>
> Ping ist in dieser Situation nicht hilfreich. Mit traceroute kann man
> sehen wo es nicht mehr "weiter" geht.
>
> Es ist empfehlenswert ip aus iproute start ifconfig und route zu
> benutzen, da es u.a. ausfürlichere Informationen bietet.
ip addr
1: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop
link/ether 96:91:5c:c9:d1:9f brd ff:ff:ff:ff:ff:ff
3: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:e0:7d:7c:9e:eb brd ff:ff:ff:ff:ff:ff
inet 192.168.100.100/24 brd 192.168.100.255 scope global eth0
8: tun1: <POINTOPOINT,MULTICAST,NOARP,UP,10000> mtu 1500 qdisc
pfifo_fast qlen 100
link/[65534]
inet 192.168.222.6 peer 192.168.222.5/32 scope global tun1
root@server:~# ip addr
1: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop
link/ether 96:91:5c:c9:d1:9f brd ff:ff:ff:ff:ff:ff
3: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:e0:7d:7c:9e:eb brd ff:ff:ff:ff:ff:ff
inet 192.168.100.100/24 brd 192.168.100.255 scope global eth0
8: tun1: <POINTOPOINT,MULTICAST,NOARP,UP,10000> mtu 1500 qdisc
pfifo_fast qlen 100
link/[65534]
inet 192.168.222.6 peer 192.168.222.5/32 scope global tun1
ip route
192.168.222.5 dev tun1 proto kernel scope link src 192.168.222.6
192.168.100.0/24 dev eth0 proto kernel scope link src 192.168.100.100
192.168.200.0/24 via 192.168.222.5 dev tun1
192.168.222.0/24 via 192.168.222.5 dev tun1
default via 192.168.100.250 dev eth0
cat /proc/sys/net/ipv4/ip_forward
1
cat /proc/sys/net/ipv4/conf/*/forwarding
1
1
1
1
1
1
ls -l /proc/sys/net/ipv4/conf/*/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 13:47
/proc/sys/net/ipv4/conf/all/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 13:47
/proc/sys/net/ipv4/conf/default/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 13:47
/proc/sys/net/ipv4/conf/dummy0/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 13:47
/proc/sys/net/ipv4/conf/eth0/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 13:47
/proc/sys/net/ipv4/conf/lo/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 13:47
/proc/sys/net/ipv4/conf/tun1/forwarding
------------------------------------------------------------
ip addr
1: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:07:e9:f4:14:da brd ff:ff:ff:ff:ff:ff
inet 192.168.200.100/24 brd 192.168.200.255 scope global eth0
2: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
3: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop
link/ether 2e:28:28:74:e5:94 brd ff:ff:ff:ff:ff:ff
21: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,10000> mtu 1500 qdisc
pfifo_fast qlen 100
link/[65534]
inet 192.168.222.1 peer 192.168.222.2/32 scope global tun0
ip route
192.168.222.2 dev tun0 proto kernel scope link src 192.168.222.1
192.168.100.0/24 via 192.168.222.2 dev tun0
192.168.200.0/24 dev eth0 proto kernel scope link src 192.168.200.100
192.168.222.0/24 via 192.168.222.2 dev tun0
default via 192.168.200.250 dev eth0
cat /proc/sys/net/ipv4/ip_forward
1
cat /proc/sys/net/ipv4/conf/*/forwarding
1
1
1
1
1
1
ls -l /proc/sys/net/ipv4/conf/*/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 15:07
/proc/sys/net/ipv4/conf/all/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 15:07
/proc/sys/net/ipv4/conf/default/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 15:07
/proc/sys/net/ipv4/conf/dummy0/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 15:07
/proc/sys/net/ipv4/conf/eth0/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 15:07
/proc/sys/net/ipv4/conf/lo/forwarding
-rw-r--r-- 1 root root 0 2008-03-07 15:07
/proc/sys/net/ipv4/conf/tun0/forwarding
Viele Grüße
Michael
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