Software :: OpenVPN Address Pool - Know To Route
Aug 3, 2010
I have a question regarding OpenVPN. I have configured my own vpn server. It is in a private network 192.168.0.0. The ip addresses I am using for the vpn connection are in the 10.9.1.0 network but I want to connect my ovpn clinets to the 192.168.0.0 network. I read the manuals and I think the "push route" command will work for me, but I cannot understand fully the description of the command "push route".
# 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"
So the questions:
1. These private subnets behind the server are routed from my vpn server or from another router
2. How these private subnets "know to route" the open vpn address pool, is this a configuration of the router for this networks (192.168.0.0)or ?
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Feb 13, 2010
I want to configure a VPN over the Internet.I installed the 'openvpn' package, generated the key file, transfered it by a secure way to the client, and setted up the configuration file.
So, in that configuration file I input the IP addresses of the tunneled interfaces. Both IPs are static in the tunnel.
Then, I've heard somewhere that I can assign a dynamic configuration IP for the client. I do this registering a range.
Well, when I tried to change static IP to dynamic IP (changing '192.168.0.2' to '192.168.0.0/24') in the configuration file, the OpenVPN didn't work.
Obviously I don't know what I'm doing, and I really, don't believe that simply changing the IP will make it work, but I tried.
I hope I explained my problem as well.
My configuration file:
# OpenVPN Server Configuration File
dev tun 0
ifconfig 192.168.0.1 192.168.0.2
cd /etc/openvpn
secret key_file
In client I execute the 'openvpn' without the '--daemon' parameter.Then I want that my client uses a IP in a range (192.168.0.0/24, for example), instead of a static IP (192.168.0.2).I also thought to use a DHCP server, but I'm not sure that will work.
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Jan 25, 2011
Having trouble getting my Netgear WNA1000 working thru wireless router. Have tried lots of suggestions from other threads to no avail. Someone suggested that th routing table isn't set correctly, so have been trying to use the follwing to make the proper entry in the routing table: sudo route add -net 192.168.0.1 netmask 255.255.255.0 dev wlan0
Result: error message stating with:
"route: netmask does not match route address"
followed by "Usage" instructions which tell me to do what I just did. Any ideas on how I can populate my routing table with correct entry for my wireless card? Not to complicate matters, but I temporarily turned off encryption on my router to eliminate that as a possibility until I get connected. So maybe it'still trying to connect via encrypted mode - do I need to turn off encryption on my (client) end?
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Sep 21, 2010
I have openvpn tunnel setup between two CentOS servers. One of the CentOS servers also acts as a DHCP server for some client computers.
Server A= OpenVPN server
Server B= OpenVPN client (connects to Server A with OpenVPN)
The two CentOS servers can ping each other (172.16.0.0/24) via the tun0.
However, client computer connected to Server B (DHCP server) can't reach 172.16.0.1 (which is the OpenVPN server).
I think I am missing some routing in my "ip route show". Following is the full picture:
What command can I issue to get this fixed? something along ip route add?
There is no firewall service on both end. service iptables stop! I can't bridge eth1 and tun0 as DHCP server might mess up the other side. I can't do a push of "redirect-gateway def1" because then clients loose their IP as they send DHCP requests to Server A.
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Sep 8, 2010
I have a server with 2 network cards. eth0 is used for all traffic and everything is working fine on this side. Eth1 is used for traffic to and from 1 ip address.
Lets say the ip address of eth1 is 123.123.123.10 and its gateway is 123.123.123.1. I need to pass all traffic to 123.123.123.20 through eth1. What command would i use?
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Mar 4, 2010
My ISP has given me 3 IP addresses to use for the internet (76.148.200.3, 76.148.200.4 and 76.148.200.5).
If I do a "wget whatismyip.com" or netcat into another server, I am appearing as 76.148.200.3.How do I change my route (command line) in linux to route internet traffic through 76.148.200.5?
Code:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
code....
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Dec 11, 2010
I'm working on a userspace application that needs to find if the kernel has a route configured for a particular destination address, and what port it would be routed from. I'm hoping there is a simple kernel call that will do this for me, but haven't been able to find it yet :-)
I don't want to actually send a packet to do this, just query the kernel if where it *would* send the packet if I did.
The only method I've come up with is to get the kernel routing table through rtnetlink then check each entry to see if it matches my destination address. I guess this will work (after one or two tries to get the logic right ;-) ) but I'd rather do a single call if there is one.
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May 12, 2010
i wanaa to config tlenet server and did the steps to enable it
but when i try to connect to server this error show :
telnet : connect to address 10.0.0.100 : No route to host
telnet : Unable to connect to remote host : No route to host
[URL]
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May 11, 2009
I would like, from a C program, find the hardware MAC address of the default route path. With BASH I can do a 'route' find 'default and then an ifconfig and grep for 'HWaddr'. Are there C calls to do the same??
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Apr 18, 2011
I have OpenVPN working well, but I can't figure out how to change the default route. By default, a "route" shows me: 192.168.0.100 * 255.255.255.255 UH 0 0 0 tun0 But I want it to read: 192.168.0.0 192.168.0.100 255.255.255.0 UG 0 0 0 tun0 ... so I can access other computers on the network. I can accomplish this manually by running: ip route add 192.168.0.0/24 via 192.168.0.100 dev tun0 proto static How can I get this to be the default route? I've tried adding push "route 192.168.0.0 255.255.255.0" to my /etc/openvpn/openvpn.conf on the VPN server but that has not helped.
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Mar 8, 2010
I have a CentOS 5.3 box running Samba and OpenVPN. I have the Samba server setup as a WINS server and OpenVPN pushes the WINS server to clients when they connect. Everything is working great except for one problem. When I connect to the VPN using a Windows machine at a remote location, I can ping all the host names of computers on the VPN network no problem at all. However, when I ping the host name of the OpenVPN server it resolves to 192.168.122.1. All my machines are on a 10.x subnet and I have no idea where this ip is coming from. I've checked the hosts file, lmhosts, etc. and can find no reference to this 192.168.122 subnet.
I think I recall seeing this 192.168.122.1 ip when I had installed the Virtualization group and it created a virtbr0 network bridge with that ip. I've since removed the Virtualization software and deleted that bridge.
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May 4, 2011
I finally got the certs to configure:
openvpn --config server.conf
Tue May 3 17:26:27 2011 OpenVPN 2.1.1 i686-redhat-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] built on Jan 5 2010
Tue May 3 17:26:27 2011 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Tue May 3 17:26:27 2011 Diffie-Hellman initialized with 1024 bit key
Tue May 3 17:26:27 2011 TLS-Auth MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Tue May 3 17:26:27 2011 ROUTE default_gateway=192.168.122.1
Tue May 3 17:26:27 2011 TUN/TAP device tun0 opened
Tue May 3 17:26:27 2011 TUN/TAP TX queue length set to 100
Tue May 3 17:26:27 2011 /sbin/ip link set dev tun0 up mtu 1500
Tue May 3 17:26:27 2011 /sbin/ip addr add dev tun0 local 10.8.0.1 peer 10.8.0.2
Tue May 3 17:26:27 2011 /sbin/ip route add 10.8.0.0/24 via 10.8.0.2
Tue May 3 17:26:27 2011 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Tue May 3 17:26:27 2011 Socket Buffers: R=[114688->131072] S=[114688->131072]
Tue May 3 17:26:27 2011 UDPv4 link local (bound): [undef]:1194
Tue May 3 17:26:27 2011 UDPv4 link remote: [undef]
Tue May 3 17:26:27 2011 MULTI: multi_init called, r=256 v=256
Tue May 3 17:26:27 2011 IFCONFIG POOL: base=10.8.0.4 size=62
Tue May 3 17:26:27 2011 IFCONFIG POOL LIST
Tue May 3 17:26:27 2011 Initialization Sequence Completed
But openvpn still won't start; where to go from here.
Tue May 3 17:54:25 2011 TCP/UDP: Socket bind failed on local address 192.168.122.3:1194: Address already in use
Tue May 3 17:54:25 2011 Exiting
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May 8, 2011
I have 3 network interfaces on my Linux Router :
Interface - Gateway - Type
Code:
br0 - 192.168.0.1 - Internet
eth2 - 192.168.1.1 - LAN
tun0 - 10.0.0.2 - VPN (via br0)
What I'd like to do is to route all TCP packets coming from eth2 to tun0 where a VPN client is running on 10.0.0.2. If I delete all default routes and if I add a new route to tun0 like :
Code:
route del default
route add default gw 10.0.0.2
Everything is fine, and everyone on eth2 can reach the Internet using the VPN access. Now the problem is that my VPN client does not allow any other protocols other than TCP. And I also want to allow VPN access only to eth2, no other LAN nor the router itself. use iptables to filter any TCP packets and mark them, so they can be sent to tun0, while any other packets can reach the Internet via br0 (192.168.0.1). I found on the Internet that we can mark packets before they get routed. Using the following commands :
Code:
iptables -t mangle -A PREROUTING -j MARK --set-mark 85 -i eth2 -p tcp --dport 80
ip route add table 300 default via 10.0.0.2 dev tun0
ip rule add fwmark 0x55 table 300
First of all, --dport 80 never work... :/ I wanted to filter TCP 80 packets coming from eth2, but none of them seems to be HTTP packets... oO (very strange...). Nevermind, I decided to forget about the --dport option. I use the "iptables -L -v -t mangle" command to see how many packets are marked, and it is working fine, all TCP packets coming from eth2 are marked. Now the problem is that none of them are routed to tun0 they are all respecting the "route -n" rules... and not the "table 300" rule I have created.
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Apr 29, 2009
I would like to add a static route, however I do not understand what is meant by the Address setting below
GATEWAY2=10.241.58.62
NETMASK2=255.255.255.224
ADDRESS2=10.241.57.32
Does this mean any addresses beginning with 10.241.57.32 are routed over the gateway 10.241.58.62 an address range
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Apr 5, 2010
i have some problems with configuring openvpn tunnel connection to my openvpn server. I'm using static-key tcp connection. Network manager always said to me that connection could not be established. Also, when i try to run openvpn from terminal, i got some strange permissions problem:
Code:
openvpn --config config.ovpn
Mon Apr 5 15:48:37 2010 OpenVPN 2.1_rc19 i486-pc-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] built on Oct 13 2009
Mon Apr 5 15:48:37 2010 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Mon Apr 5 15:48:37 2010 /usr/sbin/openvpn-vulnkey -q moj.key
[code]....
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Aug 9, 2010
i have installed openvpn and config it for a tunnel. my server.conf and client,conf is as follow:
server.conf
port 1194
proto udp
[code]...
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Oct 21, 2010
I got this definition:"a process that replaces a series of related, specific routes in a route table with a more generic route." honestly I found it not so clear.. I want to know if this definition is correct and also more details about this subject..
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Nov 26, 2010
I recently removed windows 7 from my computer and am now only using ubuntu. I used a live cd to grow the partition to use the new available space, but now the system just hangs at the Verifying DMI pool data section of bios. This is usually the first thing before grub loads.
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May 5, 2011
I was a windows XP user and one fine day my windows crashed and blue screen of death appeared. I have downloaded Ubuntu and created an ISO image on my pendrive with the help of the another computer as per the steps mentioned on the linux website. Now when am tryin to boot my corrupt PC with pendrive i cannot move beyond the comment " verifying DMI pool data" nothing happens later.
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Jan 31, 2016
I created my data pool using /dev/disk/by-id and things went well. a recent view of zpool status however showed /dev/sdb and /dev/sdc being used instead. how can I be sure a rearrangement of my disks wont cause error?
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Sep 23, 2010
I got this working before, but now I have a freshly installed Ubuntu 10.04 and I wanna play yahoo pool and I followed all those crazy insane commands they posted but they (java) didn't help at all, their support and help is really poor as I get errors like directory does not exist or no such file. I basically installed the jre-6u21-linux-i586.bin file in my home directory like and used all their commands like cd /home and all that. Here is my ls output they say always to check, but it seems like I installed it but I can't get it installed with firefox together.
[Code]....
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Aug 7, 2010
how to configure samba share that users from ip pool (for example 192.168.1.200-210) have accest without login and rest users form ip pool (192.168.1.2-199 and 192.168.1.211-254) have to past autorization.
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Dec 4, 2015
Sometime system wait during boot a long time on
Code: Select allrandom: nonblocking pool is initialized and Code: Select allPM: Starting manual resume from disk etc.
When everything is ok boot took around 20seconds. But when this problem occur it can take around 5 minutes. It occure during normal boot, but there are some information about resume from hibernation in log. But I didn't hibernate it. And hibernation doesn't work reliably so I removed uswsusp because I tried to fix hibernation with installing uswsusp first.
My laptop: MSI EX600X-033Sk (C2D T5250, Nvidia 8400g, It has firewire, usb2.0, ...)
I tried to google stuff like "Jessie slow boot", "Stack on random: nonblocking pool is initialized" etc but I didn't found any solution.
Here is few parts of my kern.log:
Code: Select allDec 2 21:27:57 MSI-EX600X-033SK kernel: [ 1.950232] sd 0:0:0:0: [sda] 468862128 512-byte logical blocks: (240 GB/223 GiB)
Dec 2 21:27:57 MSI-EX600X-033SK kernel: [ 1.952800] sd 0:0:0:0: [sda] Write Protect is off
Dec 2 21:27:57 MSI-EX600X-033SK kernel: [ 1.955190] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
Dec 2 21:27:57 MSI-EX600X-033SK kernel: [ 1.955218] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[Code] ....
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May 20, 2011
I was dual-booting Windows 7 and Ubuntu 10.10 till recently. Then I had to reinstall Windows. After re-installation of Windows I did not try to restore Grub and deleted Ubuntu partitions on disk thinking that I'll install newer Natty version. But now when I try to install Ubuntu 11.04 using pen drive it gets stuck in bios showing message "Verifying DMI pool data ....". I also tried to boot GParted, memtest and Windows 7 with the same pen drive. Same thing occurred with GParted and memtest but Windows 7 installation did not stuck and went as usual. So I guess it's not hardware.
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Aug 5, 2010
following are my Linux router information
eth1= WAN IP= 110.88.89.66/32
Gateway= 110.88.89.65
eth0= LAN IP= 192.168.1.1/24
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
MASQUERADE all -- 0.0.0.0/0 0.0.0.0/0
[Code]....
My ISP gave me IP Pool 110.88.90.68/29 to use this on my LAN. my question is how can I use this IP pool on LAN side interface. i think now its simple. 192.168.1.0 /24 is my LAN network and I can not change this, because i have near 180 PCs on my LAN.
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Apr 22, 2011
I am managing a PBX which runs redhat enterprise linux. The time on it is always getting out of sync, which causes the time on the phones to display incorrectly. I can't figure out for the life of me why the time keeps changing. How can I set it to update it's time every day or two? I don't want to hit ntp.org every day, as is recommended. What's the recommended interval for connecting to the ntp pool? The kernel is Linux 2.6.9-67.0.4 (from uname -a)
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Dec 24, 2010
I installed ubuntu 10.10 on a machine that had windows 7 x64. itts installed on a seperate HD, but now when I boot to the harddrive with windows 7 all i get is "verifying DMI pool data" how do I fix this so I can get back to windows 7 as well?
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May 15, 2011
I need to restrict users if their download file size exceeds xxx amount, set later download speed to "256kbps".
OS: Centos 5.5
Squid 3.1.8
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Apr 9, 2011
I have to install a package that is in this address "/pool/main/b/b43-fwcutter/"
where can I find it ??
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Oct 18, 2009
I had Fedora11 (default layout) running on a separate hard drive (winXP on the other drive). After the FC drive failure I replaced the drive and did a fresh install again. This time I tried a custom layout to keep the /home on a separate partition. The installation went without a hitch, but on first boot the system hangs with "Verifying DMI Pool Data......"
XP boots fine though. Looks like grub doesn't get loaded. I can boot with the installation cd and get into recovery mode, everything seems fine on the fedora disk. Fdisk result:
Grub.conf:
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