우분투 서버가 있고 여기에 VPN 액세스를 만들고 싶습니다. 저는 이를 위해 OpenVPN을 사용합니다. 또한 튜토리얼의 경우 다음을 읽고 있습니다. 지도 시간 문제는 iptables를 사용하여 트래픽을 차단하고 VPN 클라이언트를 사용하여 다시 서버에 연결하면 브라우저에서 서버를 열 수 없다는 것입니다. 아직 SSH 액세스 권한이 있습니다. 이 서버에서는 도커 컨테이너를 사용하여 이미지를 실행하기도 합니다. 그래서 질문은 이 튜토리얼에 내가 잘못하고 있는 뭔가 잘못된 것이 있다는 것입니다.
서버 .conf 파일
#################################################
# Sample OpenVPN 2.0 config file for #
# multi-client server. #
# #
# This file is for the server side #
# of a many-clients <-> one-server #
# OpenVPN configuration. #
# #
# OpenVPN also supports #
# single-machine <-> single-machine #
# configurations (See the Examples page #
# on the web site for more info). #
# #
# This config should work on Windows #
# or Linux/BSD systems. Remember on #
# Windows to quote pathnames and use #
# double backslashes, e.g.: #
# "C:\\Program Files\\OpenVPN\\config\\foo.key" #
# #
# Comments are preceded with '#' or ';' #
#################################################
# Which local IP address should OpenVPN
# listen on? (optional)
;local a.b.c.d
# Which TCP/UDP port should OpenVPN listen on?
# If you want to run multiple OpenVPN instances
# on the same machine, use a different port
# number for each one. You will need to
# open up this port on your firewall.
port 1194
# TCP or UDP server?
;proto tcp
proto udp
# "dev tun" will create a routed IP tunnel,
# "dev tap" will create an ethernet tunnel.
# Use "dev tap0" if you are ethernet bridging
# and have precreated a tap0 virtual interface
# and bridged it with your ethernet interface.
# If you want to control access policies
# over the VPN, you must create firewall
# rules for the the TUN/TAP interface.
# On non-Windows systems, you can give
# an explicit unit number, such as tun0.
# On Windows, use "dev-node" for this.
# On most systems, the VPN will not function
# unless you partially or fully disable
# the firewall for the TUN/TAP interface.
;dev tap
dev tun
# Windows needs the TAP-Win32 adapter name
# from the Network Connections panel if you
# have more than one. On XP SP2 or higher,
# you may need to selectively disable the
# Windows firewall for the TAP adapter.
# Non-Windows systems usually don't need this.
;dev-node MyTap
# SSL/TLS root certificate (ca), certificate
# (cert), and private key (key). Each client
# and the server must have their own cert and
# key file. The server and all clients will
# use the same ca file.
#
# See the "easy-rsa" directory for a series
# of scripts for generating RSA certificates
# and private keys. Remember to use
# a unique Common Name for the server
# and each of the client certificates.
#
# Any X509 key management system can be used.
# OpenVPN can also use a PKCS #12 formatted key file
# (see "pkcs12" directive in man page).
ca ca.crt
cert wserver.crt
key wserver.key # This file should be kept secret
# Diffie hellman parameters.
# Generate your own with:
# openssl dhparam -out dh2048.pem 2048
dh dh2048.pem
# Network topology
# Should be subnet (addressing via IP)
# unless Windows clients v2.0.9 and lower have to
# be supported (then net30, i.e. a /30 per client)
# Defaults to net30 (not recommended)
;topology subnet
# Configure server mode and supply a VPN subnet
# for OpenVPN to draw client addresses from.
# The server will take 10.8.0.1 for itself,
# the rest will be made available to clients.
# Each client will be able to reach the server
# on 10.8.0.1. Comment this line out if you are
# ethernet bridging. See the man page for more info.
server 10.8.0.0 255.255.255.0
# Maintain a record of client <-> virtual IP address
# associations in this file. If OpenVPN goes down or
# is restarted, reconnecting clients can be assigned
# the same virtual IP address from the pool that was
# previously assigned.
ifconfig-pool-persist ipp.txt
# Configure server mode for ethernet bridging.
# You must first use your OS's bridging capability
# to bridge the TAP interface with the ethernet
# NIC interface. Then you must manually set the
# IP/netmask on the bridge interface, here we
# assume 10.8.0.4/255.255.255.0. Finally we
# must set aside an IP range in this subnet
# (start=10.8.0.50 end=10.8.0.100) to allocate
# to connecting clients. Leave this line commented
# out unless you are ethernet bridging.
;server-bridge 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100
# Configure server mode for ethernet bridging
# using a DHCP-proxy, where clients talk
# to the OpenVPN server-side DHCP server
# to receive their IP address allocation
# and DNS server addresses. You must first use
# your OS's bridging capability to bridge the TAP
# interface with the ethernet NIC interface.
# Note: this mode only works on clients (such as
# Windows), where the client-side TAP adapter is
# bound to a DHCP client.
;server-bridge
# Push routes to the client to allow it
# to reach other private subnets behind
# the server. Remember that these
# private subnets will also need
# to know to route the OpenVPN client
# address pool (10.8.0.0/255.255.255.0)
# back to the OpenVPN server.
;push "route 192.168.10.0 255.255.255.0"
;push "route 192.168.20.0 255.255.255.0"
# Clients are to use this server as a network gateway.
push "redirect-gateway def1"
# To assign specific IP addresses to specific
# clients or if a connecting client has a private
# subnet behind it that should also have VPN access,
# use the subdirectory "ccd" for client-specific
# configuration files (see man page for more info).
# EXAMPLE: Suppose the client
# having the certificate common name "Thelonious"
# also has a small subnet behind his connecting
# machine, such as 192.168.40.128/255.255.255.248.
# First, uncomment out these lines:
;client-config-dir ccd
;route 192.168.40.128 255.255.255.248
# Then create a file ccd/Thelonious with this line:
# iroute 192.168.40.128 255.255.255.248
# This will allow Thelonious' private subnet to
# access the VPN. This example will only work
# if you are routing, not bridging, i.e. you are
# using "dev tun" and "server" directives.
# EXAMPLE: Suppose you want to give
# Thelonious a fixed VPN IP address of 10.9.0.1.
# First uncomment out these lines:
;client-config-dir ccd
;route 10.9.0.0 255.255.255.252
# Then add this line to ccd/Thelonious:
# ifconfig-push 10.9.0.1 10.9.0.2
# Suppose that you want to enable different
# firewall access policies for different groups
# of clients. There are two methods:
# (1) Run multiple OpenVPN daemons, one for each
# group, and firewall the TUN/TAP interface
# for each group/daemon appropriately.
# (2) (Advanced) Create a script to dynamically
# modify the firewall in response to access
# from different clients. See man
# page for more info on learn-address script.
;learn-address ./script
# If enabled, this directive will configure
# all clients to redirect their default
# network gateway through the VPN, causing
# all IP traffic such as web browsing and
# and DNS lookups to go through the VPN
# (The OpenVPN server machine may need to NAT
# or bridge the TUN/TAP interface to the internet
# in order for this to work properly).
push "redirect-gateway def1 bypass-dhcp"
# Certain Windows-specific network settings
# can be pushed to clients, such as DNS
# or WINS server addresses. CAVEAT:
# http://openvpn.net/faq.html#dhcpcaveats
# The addresses below refer to the public
# DNS servers provided by opendns.com.
push "dhcp-option DNS 208.67.222.222"
push "dhcp-option DNS 208.67.220.220"
# Uncomment this directive to allow different
# clients to be able to "see" each other.
# By default, clients will only see the server.
# To force clients to only see the server, you
# will also need to appropriately firewall the
# server's TUN/TAP interface.
;client-to-client
# Uncomment this directive if multiple clients
# might connect with the same certificate/key
# files or common names. This is recommended
# only for testing purposes. For production use,
# each client should have its own certificate/key
# pair.
#
# IF YOU HAVE NOT GENERATED INDIVIDUAL
# CERTIFICATE/KEY PAIRS FOR EACH CLIENT,
# EACH HAVING ITS OWN UNIQUE "COMMON NAME",
# UNCOMMENT THIS LINE OUT.
;duplicate-cn
# The keepalive directive causes ping-like
# messages to be sent back and forth over
# the link so that each side knows when
# the other side has gone down.
# Ping every 10 seconds, assume that remote
# peer is down if no ping received during
# a 120 second time period.
keepalive 10 120
# For extra security beyond that provided
# by SSL/TLS, create an "HMAC firewall"
# to help block DoS attacks and UDP port flooding.
#
# Generate with:
# openvpn --genkey --secret ta.key
#
# The server and each client must have
# a copy of this key.
# The second parameter should be '0'
# on the server and '1' on the clients.
tls-auth ta.key 0 # This file is secret
key-direction 0
# Select a cryptographic cipher.
# This config item must be copied to
# the client config file as well.
;cipher BF-CBC # Blowfish (default)
cipher AES-256-CBC # AES
;cipher DES-EDE3-CBC # Triple-DES
auth SHA256
# Enable compression on the VPN link.
# If you enable it here, you must also
# enable it in the client config file.
comp-lzo
# The maximum number of concurrently connected
# clients we want to allow.
;max-clients 100
# It's a good idea to reduce the OpenVPN
# daemon's privileges after initialization.
#
# You can uncomment this out on
# non-Windows systems.
user nobody
group nogroup
# The persist options will try to avoid
# accessing certain resources on restart
# that may no longer be accessible because
# of the privilege downgrade.
persist-key
persist-tun
# Output a short status file showing
# current connections, truncated
# and rewritten every minute.
status openvpn-status.log
# By default, log messages will go to the syslog (or
# on Windows, if running as a service, they will go to
# the "\Program Files\OpenVPN\log" directory).
# Use log or log-append to override this default.
# "log" will truncate the log file on OpenVPN startup,
# while "log-append" will append to it. Use one
# or the other (but not both).
;log openvpn.log
;log-append openvpn.log
# Set the appropriate level of log
# file verbosity.
#
# 0 is silent, except for fatal errors
# 4 is reasonable for general usage
# 5 and 6 can help to debug connection problems
# 9 is extremely verbose
verb 3
# Silence repeating messages. At most 20
# sequential messages of the same message
# category will be output to the log.
;mute 20
IP 주소 세부정보
root@scw-71f02e:~# ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether de:19:68:1a:10:02 brd ff:ff:ff:ff:ff:ff
inet 10.4.107.133/31 brd 10.4.107.133 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::dc19:68ff:fe1a:1002/64 scope link
valid_lft forever preferred_lft forever
3: ip6_vti0@NONE: <NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1
link/tunnel6 :: brd ::
4: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1
link/sit 0.0.0.0 brd 0.0.0.0
5: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN group default qlen 1
link/tunnel6 :: brd ::
7: br-7a0b6054cfcc: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:87:1f:78:92 brd ff:ff:ff:ff:ff:ff
inet 172.19.0.1/16 scope global br-7a0b6054cfcc
valid_lft forever preferred_lft forever
inet6 fe80::42:87ff:fe1f:7892/64 scope link
valid_lft forever preferred_lft forever
8: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:4e:9e:0e:a3 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:4eff:fe9e:ea3/64 scope link
valid_lft forever preferred_lft forever
9: br-a9f47349cd0a: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:69:80:40:ff brd ff:ff:ff:ff:ff:ff
inet 172.20.0.1/16 scope global br-a9f47349cd0a
valid_lft forever preferred_lft forever
inet6 fe80::42:69ff:fe80:40ff/64 scope link
valid_lft forever preferred_lft forever
10: br-eadb628ff757: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:b8:29:a5:5b brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 scope global br-eadb628ff757
valid_lft forever preferred_lft forever
inet6 fe80::42:b8ff:fe29:a55b/64 scope link
valid_lft forever preferred_lft forever
12: veth43bacbe@if11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-7a0b6054cfcc state UP group default
link/ether 16:8a:ad:ea:61:45 brd ff:ff:ff:ff:ff:ff link-netnsid 4
inet6 fe80::148a:adff:feea:6145/64 scope link
valid_lft forever preferred_lft forever
14: veth6643630@if13: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-a9f47349cd0a state UP group default
link/ether 2e:aa:81:6f:54:e9 brd ff:ff:ff:ff:ff:ff link-netnsid 11
inet6 fe80::2caa:81ff:fe6f:54e9/64 scope link
valid_lft forever preferred_lft forever
16: vetha1e6703@if15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-7a0b6054cfcc state UP group default
link/ether e2:ea:24:f9:9e:b8 brd ff:ff:ff:ff:ff:ff link-netnsid 3
inet6 fe80::e0ea:24ff:fef9:9eb8/64 scope link
valid_lft forever preferred_lft forever
18: veth5f6842b@if17: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-7a0b6054cfcc state UP group default
link/ether d2:b1:ad:11:5a:8e brd ff:ff:ff:ff:ff:ff link-netnsid 5
inet6 fe80::d0b1:adff:fe11:5a8e/64 scope link
valid_lft forever preferred_lft forever
20: veth6356df6@if19: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-eadb628ff757 state UP group default
link/ether 86:67:ab:6c:e1:c6 brd ff:ff:ff:ff:ff:ff link-netnsid 2
inet6 fe80::8467:abff:fe6c:e1c6/64 scope link
valid_lft forever preferred_lft forever
22: veth8ee8fd4@if21: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-a9f47349cd0a state UP group default
link/ether ca:86:b4:05:21:4b brd ff:ff:ff:ff:ff:ff link-netnsid 8
inet6 fe80::c886:b4ff:fe05:214b/64 scope link
valid_lft forever preferred_lft forever
24: vetha3581cf@if23: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether a6:d4:56:34:28:83 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::a4d4:56ff:fe34:2883/64 scope link
valid_lft forever preferred_lft forever
26: vethee6d4a4@if25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-eadb628ff757 state UP group default
link/ether 9a:f3:52:d1:77:24 brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::98f3:52ff:fed1:7724/64 scope link
valid_lft forever preferred_lft forever
28: vethbebf7e8@if27: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-eadb628ff757 state UP group default
link/ether b6:de:90:76:61:92 brd ff:ff:ff:ff:ff:ff link-netnsid 9
inet6 fe80::b4de:90ff:fe76:6192/64 scope link
valid_lft forever preferred_lft forever
31: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 100
link/none
inet 10.8.0.1 peer 10.8.0.2/32 scope global tun0
valid_lft forever preferred_lft forever
inet6 fe80::42c1:4b65:65f9:1bcb/64 scope link flags 800
valid_lft forever preferred_lft forever
내 목표는 VPN을 통해서만 jenkins, nexus, portainer, DB 등 모든 docker 인스턴스에 액세스하는 것입니다.
client_machine ------> VPN --->Docker 컨테이너
나는 이것을 원하지 않습니다: client_machine -----X------> Docker-containers
이것은 iptables입니다:
Chain INPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT all -- anywhere anywhere
2 REJECT all -- 127.0.0.0/8 anywhere reject-with icmp-port-unreachable
3 ACCEPT icmp -- anywhere anywhere state NEW icmp echo-request
4 ACCEPT icmp -- anywhere anywhere state RELATED,ESTABLISHED
5 ACCEPT tcp -- anywhere anywhere state NEW,ESTABLISHED tcp dpt:ssh
6 ACCEPT udp -- anywhere anywhere state NEW,ESTABLISHED udp dpt:openvpn
7 ACCEPT udp -- anywhere anywhere state ESTABLISHED udp spt:domain
8 ACCEPT tcp -- anywhere anywhere state ESTABLISHED tcp spt:domain
9 ACCEPT tcp -- anywhere anywhere state ESTABLISHED tcp spt:http
10 ACCEPT tcp -- anywhere anywhere state ESTABLISHED tcp spt:https
11 ACCEPT all -- anywhere anywhere
12 LOG all -- anywhere anywhere limit: avg 3/min burst 5 LOG level warning prefix "iptables_INPUT_denied: "
13 REJECT all -- anywhere anywhere reject-with icmp-port-unreachable
Chain FORWARD (policy DROP)
num target prot opt source destination
1 ACCEPT all -- anywhere anywhere
2 ACCEPT all -- 10.8.0.0/24 anywhere
3 ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
4 LOG all -- anywhere anywhere limit: avg 3/min burst 5 LOG level warning prefix "iptables_FORWARD_denied: "
5 REJECT all -- anywhere anywhere reject-with icmp-port-unreachable
Chain OUTPUT (policy ACCEPT)
num target prot opt source destination
1 ACCEPT all -- anywhere anywhere
2 ACCEPT icmp -- anywhere anywhere
3 ACCEPT tcp -- anywhere anywhere state ESTABLISHED tcp spt:ssh
4 ACCEPT udp -- anywhere anywhere state ESTABLISHED udp spt:openvpn
5 ACCEPT udp -- anywhere anywhere state NEW,ESTABLISHED udp dpt:domain
6 ACCEPT tcp -- anywhere anywhere state NEW,ESTABLISHED tcp dpt:domain
7 ACCEPT tcp -- anywhere anywhere state NEW,ESTABLISHED tcp dpt:http
8 ACCEPT tcp -- anywhere anywhere state NEW,ESTABLISHED tcp dpt:https
9 ACCEPT all -- anywhere anywhere
10 LOG all -- anywhere anywhere limit: avg 3/min burst 5 LOG level warning prefix "iptables_OUTPUT_denied: "
11 REJECT all -- anywhere anywhere reject-with icmp-port-unreachable
답변1
push "redirect-gateway def1"서버의 구성 파일에 추가해야 합니다 .
이 옵션을 사용하면 모든 클라이언트 트래픽이 VPN 연결을 통해 리디렉션됩니다.