Linux에서 터널 인터페이스를 만들고 로컬 및 원격 주소에 IP를 할당했습니다. 그런 다음 해당 인터페이스에 대한 경로를 만들었습니다. 나는 패킷이 해당 인터페이스에 도착하여 다른 곳에서 사용하기를 원합니다. 예를 들어 TCP/UDP 소켓을 사용하여 호스트에 패킷을 보냅니다. 나는 연구 목적과 학습 목적으로 이것을 하려고 노력합니다. 제가 하고 있는 일은 전혀 관련이 없습니다. 정정해 주시기 바랍니다.
내가 실행한 명령은 다음과 같습니다.
sudo ip tunnel add mytun mode ipip local 10.2.1.1 remote 10.2.1.1
sudo ip link set mytun up
sudo ip route add 10.2.0.0/16 dev mytun
10.2.1.2터널 인터페이스 로 패킷을 보내고 해당 패킷을 캡처하고 싶습니다 .
분명히 개념적으로 뭔가가 빠져 있고 뭔가 혼란스러울 수도 있습니다. 일부 VPN 클라이언트는 유사한 기능을 구현하여 터널 인터페이스를 생성하고 해당 인터페이스에서 UDP 터널을 통해 VPN 게이트웨이로 트래픽을 라우팅한다고 들었습니다. 나는 사물이 어떻게 작동하는지 탐구하고 실험하고 싶었습니다.
편집하다:
이것은 제가 설명한 방식으로 작동하는 컴퓨터의 출력입니다. 컴퓨터가 VPN 클라이언트에 연결되어 있습니다.
% ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP>
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
nd6 options=201<PERFORMNUD,DAD>
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en5: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether ac:de:48:00:11:22
inet6 fe80::aede:48ff:fe00:1122%en5 prefixlen 64 scopeid 0x4
nd6 options=201<PERFORMNUD,DAD>
media: autoselect (100baseTX <full-duplex>)
status: active
ap1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
options=400<CHANNEL_IO>
ether aa:66:5a:01:9c:72
media: autoselect
status: inactive
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=400<CHANNEL_IO>
ether 88:66:5a:01:9c:72
inet6 fe80::4e3:d805:211e:482c%en0 prefixlen 64 secured scopeid 0x6
inet 192.168.1.27 netmask 0xffffff00 broadcast 192.168.1.255
nd6 options=201<PERFORMNUD,DAD>
media: autoselect
status: active
p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304
options=400<CHANNEL_IO>
ether 0a:66:5a:01:9c:72
media: autoselect
status: inactive
awdl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484
options=400<CHANNEL_IO>
ether d2:41:09:96:68:02
inet6 fe80::d041:9ff:fe96:6802%awdl0 prefixlen 64 scopeid 0x8
nd6 options=201<PERFORMNUD,DAD>
media: autoselect
status: active
llw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=400<CHANNEL_IO>
ether d2:41:09:96:68:02
inet6 fe80::d041:9ff:fe96:6802%llw0 prefixlen 64 scopeid 0x9
nd6 options=201<PERFORMNUD,DAD>
media: autoselect
status: active
en1: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
options=460<TSO4,TSO6,CHANNEL_IO>
ether 82:bc:33:c0:a0:01
media: autoselect <full-duplex>
status: inactive
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
options=460<TSO4,TSO6,CHANNEL_IO>
ether 82:bc:33:c0:a0:00
media: autoselect <full-duplex>
status: inactive
en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
options=460<TSO4,TSO6,CHANNEL_IO>
ether 82:bc:33:c0:a0:05
media: autoselect <full-duplex>
status: inactive
en4: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
options=460<TSO4,TSO6,CHANNEL_IO>
ether 82:bc:33:c0:a0:04
media: autoselect <full-duplex>
status: inactive
bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=63<RXCSUM,TXCSUM,TSO4,TSO6>
ether 82:bc:33:c0:a0:01
Configuration:
id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0
maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200
root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0
ipfilter disabled flags 0x0
member: en1 flags=3<LEARNING,DISCOVER>
ifmaxaddr 0 port 10 priority 0 path cost 0
member: en2 flags=3<LEARNING,DISCOVER>
ifmaxaddr 0 port 11 priority 0 path cost 0
member: en3 flags=3<LEARNING,DISCOVER>
ifmaxaddr 0 port 12 priority 0 path cost 0
member: en4 flags=3<LEARNING,DISCOVER>
ifmaxaddr 0 port 13 priority 0 path cost 0
nd6 options=201<PERFORMNUD,DAD>
media: <unknown type>
status: inactive
utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380
inet6 fe80::8a35:50aa:7ece:babb%utun0 prefixlen 64 scopeid 0xf
nd6 options=201<PERFORMNUD,DAD>
utun1: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000
inet6 fe80::1fca:c7f5:9c76:6e18%utun1 prefixlen 64 scopeid 0x10
nd6 options=201<PERFORMNUD,DAD>
utun2: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1400
inet 10.212.232.54 --> 10.212.232.54 netmask 0xffffffff
% netstat -r -n
Routing tables
Internet:
Destination Gateway Flags Netif Expire
default 192.168.1.1 UGSc en0
10/24 10.212.232.54 UGSc utun2
10.0.1/24 10.212.232.54 UGSc utun2
10.0.2/24 10.212.232.54 UGSc utun2
10.0.3/24 10.212.232.54 UGSc utun2
10.0.4/24 10.212.232.54 UGSc utun2
10.0.5/24 10.212.232.54 UGSc utun2
10.0.6/24 10.212.232.54 UGSc utun2
10.0.10/24 10.212.232.54 UGSc utun2
10.0.20/24 10.212.232.54 UGSc utun2
10.0.30/24 10.212.232.54 UGSc utun2
10.0.31/24 10.212.232.54 UGSc utun2
10.0.33/24 10.212.232.54 UGSc utun2
10.0.50/24 10.212.232.54 UGSc utun2
10.0.70/24 10.212.232.54 UGSc utun2
10.0.80/23 10.212.232.54 UGSc utun2
10.0.100/24 10.212.232.54 UGSc utun2
10.1.10/24 10.212.232.54 UGSc utun2
10.1.20/24 10.212.232.54 UGSc utun2
10.1.50/24 10.212.232.54 UGSc utun2
10.1.200/24 10.212.232.54 UGSc utun2
10.2.10/24 10.212.232.54 UGSc utun2
10.2.20/24 10.212.232.54 UGSc utun2
10.2.50/24 10.212.232.54 UGSc utun2
10.2.80/24 10.212.232.54 UGSc utun2
10.2.81/24 10.212.232.54 UGSc utun2
10.10/16 10.212.232.54 UGSc utun2
10.10.10/24 10.212.232.54 UGSc utun2
10.10.20/24 10.212.232.54 UGSc utun2
10.10.30/24 10.212.232.54 UGSc utun2
10.10.35/29 10.212.232.54 UGSc utun2
10.10.36/22 10.212.232.54 UGSc utun2
10.10.40/24 10.212.232.54 UGSc utun2
10.10.41/24 10.212.232.54 UGSc utun2
10.10.42/23 10.212.232.54 UGSc utun2
10.10.42.7 10.212.232.54 UGHS utun2
10.10.42.8 10.212.232.54 UGHS utun2
10.10.44/24 10.212.232.54 UGSc utun2
10.10.45/24 10.212.232.54 UGSc utun2
10.10.46/24 10.212.232.54 UGSc utun2
10.10.47/24 10.212.232.54 UGSc utun2
10.10.48/21 10.212.232.54 UGSc utun2
10.10.56/22 10.212.232.54 UGSc utun2
10.10.60/24 10.212.232.54 UGSc utun2
10.10.61/24 10.212.232.54 UGSc utun2
10.10.62/24 10.212.232.54 UGSc utun2
10.10.65/24 10.212.232.54 UGSc utun2
10.10.70/24 10.212.232.54 UGSc utun2
10.10.80/24 10.212.232.54 UGSc utun2
10.10.81/24 10.212.232.54 UGSc utun2
10.10.82/24 10.212.232.54 UGSc utun2
10.10.87/24 10.212.232.54 UGSc utun2
10.10.90/24 10.212.232.54 UGSc utun2
10.10.93/24 10.212.232.54 UGSc utun2
10.10.95/24 10.212.232.54 UGSc utun2
10.10.112/24 10.212.232.54 UGSc utun2
10.10.120/24 10.212.232.54 UGSc utun2
10.10.150/24 10.212.232.54 UGSc utun2
10.10.151/24 10.212.232.54 UGSc utun2
10.10.180/24 10.212.232.54 UGSc utun2
10.10.182/24 10.212.232.54 UGSc utun2
10.10.184/22 10.212.232.54 UGSc utun2
10.10.200/21 10.212.232.54 UGSc utun2
10.10.212/24 10.212.232.54 UGSc utun2
10.10.220/24 10.212.232.54 UGSc utun2
10.20/16 10.212.232.54 UGSc utun2
10.20.40.128/25 10.212.232.54 UGSc utun2
10.30.30/24 10.212.232.54 UGSc utun2
10.32/24 10.212.232.54 UGSc utun2
10.32.1/24 10.212.232.54 UGSc utun2
10.32.2/24 10.212.232.54 UGSc utun2
10.32.3/24 10.212.232.54 UGSc utun2
10.32.4/24 10.212.232.54 UGSc utun2
10.32.5/24 10.212.232.54 UGSc utun2
10.32.6/24 10.212.232.54 UGSc utun2
10.32.16/24 10.212.232.54 UGSc utun2
10.32.16.252/30 10.212.232.54 UGSc utun2
10.32.34/24 10.212.232.54 UGSc utun2
10.32.36/24 10.212.232.54 UGSc utun2
10.32.199/24 10.212.232.54 UGSc utun2
10.32.249/24 10.212.232.54 UGSc utun2
10.32.250/24 10.212.232.54 UGSc utun2
10.32.251/24 10.212.232.54 UGSc utun2
10.32.252/24 10.212.232.54 UGSc utun2
10.32.253/24 10.212.232.54 UGSc utun2
10.32.254/24 10.212.232.54 UGSc utun2
10.34/24 10.212.232.54 UGSc utun2
10.34.1/24 10.212.232.54 UGSc utun2
10.34.21/24 10.212.232.54 UGSc utun2
10.36/24 10.212.232.54 UGSc utun2
10.36.1/24 10.212.232.54 UGSc utun2
10.40/16 10.212.232.54 UGSc utun2
10.41/16 10.212.232.54 UGSc utun2
10.43/16 10.212.232.54 UGSc utun2
10.45/16 10.212.232.54 UGSc utun2
10.46/16 10.212.232.54 UGSc utun2
10.47/16 10.212.232.54 UGSc utun2
10.49/16 10.212.232.54 UGSc utun2
10.51/24 10.212.232.54 UGSc utun2
10.51.1/24 10.212.232.54 UGSc utun2
10.52/16 10.212.232.54 UGSc utun2
10.53/16 10.212.232.54 UGSc utun2
10.54/15 10.212.232.54 UGSc utun2
10.56/15 10.212.232.54 UGSc utun2
10.58/16 10.212.232.54 UGSc utun2
10.59/16 10.212.232.54 UGSc utun2
10.60/16 10.212.232.54 UGSc utun2
10.61/16 10.212.232.54 UGSc utun2
10.66/24 10.212.232.54 UGSc utun2
10.66.1/24 10.212.232.54 UGSc utun2
10.66.2/24 10.212.232.54 UGSc utun2
10.66.3/24 10.212.232.54 UGSc utun2
10.66.12/22 10.212.232.54 UGSc utun2
10.75/23 10.212.232.54 UGSc utun2
10.100/22 10.212.232.54 UGSc utun2
10.100.4/22 10.212.232.54 UGSc utun2
10.100.7/24 10.212.232.54 UGSc utun2
10.100.8/24 10.212.232.54 UGSc utun2
10.100.11/24 10.212.232.54 UGSc utun2
10.100.12/24 10.212.232.54 UGSc utun2
10.101.64/18 10.212.232.54 UGSc utun2
10.104.100/23 10.212.232.54 UGSc utun2
10.110/16 10.212.232.54 UGSc utun2
10.123/16 10.212.232.54 UGSc utun2
10.130/16 10.212.232.54 UGSc utun2
10.130.200/24 10.212.232.54 UGSc utun2
10.140/16 10.212.232.54 UGSc utun2
10.145/16 10.212.232.54 UGSc utun2
10.146.8/22 10.212.232.54 UGSc utun2
10.146.24/24 10.212.232.54 UGSc utun2
10.146.25/26 10.212.232.54 UGSc utun2
10.146.26/27 10.212.232.54 UGSc utun2
10.146.28/22 10.212.232.54 UGSc utun2
10.146.32/22 10.212.232.54 UGSc utun2
10.146.254/24 10.212.232.54 UGSc utun2
10.147/21 10.212.232.54 UGSc utun2
10.147.16/21 10.212.232.54 UGSc utun2
10.147.32/21 10.212.232.54 UGSc utun2
10.147.48/21 10.212.232.54 UGSc utun2
10.147.64/21 10.212.232.54 UGSc utun2
10.147.80/21 10.212.232.54 UGSc utun2
10.147.96/21 10.212.232.54 UGSc utun2
10.147.112/21 10.212.232.54 UGSc utun2
10.147.128/21 10.212.232.54 UGSc utun2
10.147.144/21 10.212.232.54 UGSc utun2
10.147.160/21 10.212.232.54 UGSc utun2
10.147.176/21 10.212.232.54 UGSc utun2
10.147.192/21 10.212.232.54 UGSc utun2
10.147.200/21 10.212.232.54 UGSc utun2
10.147.208/21 10.212.232.54 UGSc utun2
10.147.216/21 10.212.232.54 UGSc utun2
10.147.224/21 10.212.232.54 UGSc utun2
10.147.232/21 10.212.232.54 UGSc utun2
10.147.240/21 10.212.232.54 UGSc utun2
10.147.248/21 10.212.232.54 UGSc utun2
10.178.229.31 10.212.232.54 UGHS utun2
10.201/16 10.212.232.54 UGSc utun2
10.202/16 10.212.232.54 UGSc utun2
10.203/16 10.212.232.54 UGSc utun2
10.204/16 10.212.232.54 UGSc utun2
10.212.232.54/32 127.0.0.1 UGSc lo0
10.226/16 10.212.232.54 UGSc utun2
10.250/21 10.212.232.54 UGSc utun2
10.250/16 10.212.232.54 UGSc utun2
10.250.8/21 10.212.232.54 UGSc utun2
10.250.16/21 10.212.232.54 UGSc utun2
10.250.24/21 10.212.232.54 UGSc utun2
10.250.32/21 10.212.232.54 UGSc utun2
10.250.40/21 10.212.232.54 UGSc utun2
10.250.48/21 10.212.232.54 UGSc utun2
10.250.56/21 10.212.232.54 UGSc utun2
10.250.64/21 10.212.232.54 UGSc utun2
10.250.72/21 10.212.232.54 UGSc utun2
10.250.80/24 10.212.232.54 UGSc utun2
10.250.88/21 10.212.232.54 UGSc utun2
10.250.96/21 10.212.232.54 UGSc utun2
10.250.104/21 10.212.232.54 UGSc utun2
10.250.112/21 10.212.232.54 UGSc utun2
10.250.120/24 10.212.232.54 UGSc utun2
10.250.122/25 10.212.232.54 UGSc utun2
10.250.122.128/27 10.212.232.54 UGSc utun2
10.250.124/24 10.212.232.54 UGSc utun2
10.250.125/24 10.212.232.54 UGSc utun2
10.250.126/24 10.212.232.54 UGSc utun2
10.250.127/24 10.212.232.54 UGSc utun2
10.250.128/24 10.212.232.54 UGSc utun2
10.250.129/24 10.212.232.54 UGSc utun2
10.250.130/24 10.212.232.54 UGSc utun2
10.250.131/24 10.212.232.54 UGSc utun2
10.250.132/24 10.212.232.54 UGSc utun2
10.250.133/24 10.212.232.54 UGSc utun2
10.250.134/24 10.212.232.54 UGSc utun2
10.250.136/24 10.212.232.54 UGSc utun2
10.250.137/24 10.212.232.54 UGSc utun2
10.250.138/24 10.212.232.54 UGSc utun2
10.250.139/24 10.212.232.54 UGSc utun2
10.250.146/24 10.212.232.54 UGSc utun2
10.250.147/24 10.212.232.54 UGSc utun2
10.250.148/24 10.212.232.54 UGSc utun2
10.250.149/24 10.212.232.54 UGSc utun2
10.250.150/24 10.212.232.54 UGSc utun2
10.250.200/21 10.212.232.54 UGSc utun2
10.250.208/21 10.212.232.54 UGSc utun2
10.250.216/21 10.212.232.54 UGSc utun2
127 127.0.0.1 UCS lo0
127.0.0.1 127.0.0.1 UH lo0
169.254 link#6 UCS en0 !
172.16.20/24 10.212.232.54 UGSc utun2
172.16.22/24 10.212.232.54 UGSc utun2
172.16.30/24 10.212.232.54 UGSc utun2
172.16.40/22 10.212.232.54 UGSc utun2
172.16.44/24 10.212.232.54 UGSc utun2
172.16.135/24 10.212.232.54 UGSc utun2
172.16.136/24 10.212.232.54 UGSc utun2
172.16.137/24 10.212.232.54 UGSc utun2
172.16.138/24 10.212.232.54 UGSc utun2
172.16.139/24 10.212.232.54 UGSc utun2
172.16.140/24 10.212.232.54 UGSc utun2
172.17/21 10.212.232.54 UGSc utun2
172.18 10.212.232.54 UGSc utun2
192.168.0/16 10.212.232.54 UGSc utun2
192.168.1 link#6 UCS en0 !
192.168.1.1 50:68:a:63:26:e8 UHLS en0
192.168.1.1/32 link#6 UCS en0 !
192.168.1.1 50:68:a:63:26:e8 UHLWIir en0 1194
192.168.1.27/32 link#6 UCS en0 !
192.168.2 10.212.232.54 UGSc utun2
224.0.0/4 link#6 UmCS en0 !
224.0.0.251 1:0:5e:0:0:fb UHmLWI en0
239.255.255.250 1:0:5e:7f:ff:fa UHmLWI en0
255.255.255.255/32 link#6 UCS en0 !
공용 IP는 편집되었으며 macOS 시스템에서 온 것입니다. 10.250.0.0/16 범위의 IP를 ping할 수 있습니다.