Server :: Run An Openvpn Server On A Openvz VPS - Packets Doesn't Reach The Client
Oct 23, 2010
I'm trying hard to run an openvpn server on a openvz VPS, the problem is packets sent from openvpn server process, doesnt reach the client, so connection is never stablished (I run tcpdump on server and wireshark on client to carefully investigate whats wrong), the first guess is that a kind of firewall is blocking traffic (I tried connecting to server through different ISP's but it's possible the national network provider applied some filtering but it cant be on IP,src port or dst port as I'd tried different configuration.
what about deep packet inspection technics, is it possible to block my traffic?) but at exactly the same time I can transmit UDP packets using netcat from server to the guest. there is no firewall enabled in between, I had tried, tcp and udp, tried both open vpn and openvpnAS and tried any thing one can imagine! the VPN is configured as a routed (TUN) type on debian
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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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Apr 26, 2010
What client can I use on a MAC to connect to an openvpn server?
All the client s seem to use password connections whereas the openvpn server uses certificates.
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Feb 4, 2010
Running Linux Fedora 10 on an Intel Core 2 Duo PC. Runs great. We are trying establish VPN between a client and server on the same LAN. The network is a standard fast ethernet, run great. We are trying to install OpenVPN server, but having a little difficulty. Key and certificate builds seem to execute without a problem. But when we try to start the service we get [FAILED]. I've attached a copy of our procedure.
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Feb 9, 2011
I have set up my Openvpn Server in Centos and it is working fine. Windows XP clients are able to connect the OpenVPN Server and access the network. This is a customized OpenVPN Gui Client. Now I need the customized OpenVPN Client for MS Windows 7Bit. I am using openvpn-2.1.4-install OpenVPN Client in MS Windows 7 64Bit. This is a executable and working fine in the said architecture. Now I want to compile this version. I am following the given steps at : [URL].. As per the direction i have copied the source from 2.1.4 and tried to compile, but compiled copy is giving the error " An error occurred Installing the TAP-Win32 Device Driver". I have tried this compilation by making every change and hack but all in vain.
I think that there are some certain steps which are missing and not documented any where. And sure that someone in forum will know the facts.
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Oct 26, 2010
I have an Ubuntu server that is currently running Ubuntu 8.10. I was thinking of making it a VPN server for my iPhone and also for my laptop whenever I'm outside and need to access internet over insecure wireless networks. Now that part should be easy I found several guides on how to configure OpenVPN server, as well as enabling clients on iPhone, and OSX.
However, the things is that my server is currently a OpenVPN client also, I have a paid tunnel set up to bypass my ISP blocking incoming traffic on various ports. Is it possible to keep this setting but still enabling a VPN server? Essentially causing traffic from my external device to go in through my tunnel to the VPN server, and then out through the external VPN provider.
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May 10, 2011
I already search in google doc about installation openvpn. Not all I got complete tutorial. When client connect to server, they got a few error.
Code:
Mon May 09 18:01:57 2011 us=774000 Re-using SSL/TLS context
Mon May 09 18:01:57 2011 us=774000 LZO compression initialized
Mon May 09 18:01:57 2011 us=774000 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ]
Mon May 09 18:01:57 2011 us=774000 Socket Buffers: R=[8192->8192] S=[8192->8192]
Mon May 09 18:01:57 2011 us=790000 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ]
Mon May 09 18:01:57 2011 us=790000 Local Options String: 'V4,dev-type tun,link-mtu 1542,tun-mtu 1500,proto UDPv4,comp-lzo,cipher BF-CBC,auth SHA1,keysize 128,key-method 2,tls-client' .....
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Mar 20, 2011
I want to configuring openvpn-2.1.4 on linux redhat as client server using key, but there is some drawback
[Code]...
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Nov 24, 2010
How to login multiple client pc on the same network using via openvpn server from client side
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Mar 20, 2009
Code...
What I can ping
Host A -> Host B
Host B -> Host A
Host A -> Router B
Host B -> Router A
Host A -> OpenVPN B
Host B -> OpenVPN A
VPN Server -> VPN Client
VPN Client -> VPN Server
What I can't ping
VPN Server to any client side host local address
VPN Client to any server side host local address
I have searched and searched for this but can not find any answers. Why can I not ping Host B from my OpenVPN server?
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Sep 15, 2009
I'm trying to set up a VPN connection between our CentOS 5.3 server at work and my bosses XP computer at home. At this point, we are kinda locked into Quickbooks. I'm testing the connection from my XP boot at home to see if it works. I can log into our servicemanuals easily enough from XP at home however, the windows takes forever to update. I have the Samba server only listening on port 445 because is seems to work more efficiently at work. I connect to the Samba shares via linux from home and everything works well but, when I try to do anything with the shares from Windows client at home, it's very slow!
I'm thinking that it must have something either to do with the Windows OpenVPN client or the client.conf file. Is there anything I should look at in the .conf file for answers?
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Jan 23, 2010
I am trying to setup a vpn client for my iphone since it doesn't support openvpn. However I keep running into this error message: initial Main Mode message received on <local ip>:500 but no connection has been authorized with policy=PSK.
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Mar 23, 2010
i want know how can install openvz on centos 5.4 64 bit ?
i'm try with defualt steps on centos 5.3 32 but not working
the server working on 16 gb ram
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Jun 11, 2011
I configured openLdap in RHEL5 on virtual achines,everything is working fine, I created a user called ldapuser,in LDAP server and i created a home directory for ldapuser in my LDAP client, now i can able to login to the both Server and client with ldapuser account....
Now here what am expecting is i want to export my server's home directory to the client, i dont want to create home directories manually in the client machine, i googled about that, and it can be done through autofs.....
what need to be done on the client and server side.
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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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Jun 27, 2009
This will be a little long (having read Phil's 'how to ask questions' FAQ). I'm trying to get OpenVPN working between my CentOS server and some Windoze laptops running XP. There seems to be plenty of sample
config files available, but to date, none of them have worked for me. Pulling out my trusty Wireshark, I've found some clues,
BACKGROUND:
My local subnet (NAT'ed by my gateway router) is 192.168.52.x. My router has been configured with a conduit (port-forward) for port 1194 (the standard OpenVPN port), which points towards my CentOS server.The CentOS server is .52.112, and the supplicant is .52.110. I have tried the lient both inside and outside my local subnet, with no difference in events or outcomes.
[Code]...
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Jun 4, 2010
I'm building up a server based on 8.04 LTS. It's using OpenVZ, and as part of that it creates a virtual network interface venet0. I add a stanza to /etc/network/interfaces that looks like this:
Code:
allow-hotplug venet0
iface venet0 inet static
address 10.53.35.1
netmask 255.255.255.0
[Code].....
Looking further, I note that /etc/init.d/networking is not symlinked into anything other than the rcS.d directory. It's been a while since I've been tinkering at this level, but I understand that there should be a symlink from rc2.d/Sxxnetworking into ../etc/init.d/networking. So I wonder where eth0 is getting configured.
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Jan 20, 2010
I have x11 forwarding enabled in /etc/ssh/sshd_config on a suse 11.2 32 bit box running kde I can open x apps on a windows machine using xming and putty just fine, but when I boot the same machine into suse 11.2 64 bit using kde and try using konsole I get: cannot connect to x server
The command I'm using to log in is: ssh -X -l username host I doubt the problem is with the server I'm logging into or it wouldn't work in windows, not really sure what to look for as I've never had a problem using x11 forwarding from a linux client before only windows ones
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Sep 1, 2010
I'm setting up an LTSP server using Ubuntu 10.4 64bit, and PXE connecting with thin clients using Atheros cards. The ltsp environment is 32bit.
Unfortunately I get an error message with "No interfaces found! Aborting..." and a kernel panic early during PXE boot.
After an enormous amount of investigation, I've narrowed it down to (probably) being the fact that the ltsp chroot environment doesn't have the correct driver for my network card (I believe it's atl1c). The correct driver IS available in Ubuntu, though, as I can successfully boot the thin client from both 64bit and 32bit live CDs and bring up the network interface.
how can I install the correct driver in the PXE environment?
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Feb 8, 2011
My server gets ddos attacks. I dig into access logs and I saw that attacker ips doesn't have valid requests headers, like their browser application info or requested url info.I want to close those connections immediately, and if it's possible block those ips for a time period.Can I do that with Apache and iptables?I searched on the internet but couldn't find useful results. Probably couldn't search for the right words.
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Jul 6, 2010
i just one to emulate the windows 2003 - windows XP easy VPN deployment, with my ubuntu server.I got my server side (ubuntu) and client side ( openVPN gui) and everything looks okbut now, i cant make a //server/SHARED and get from my house to the office's docs, despite the conection its ok... whats wrong?
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Apr 12, 2011
We're setting up an OpenVPN access server, a quite straight-forward and very customizable system. Only we have a problem, I guess caused by Apache, when we try to reach the client web server via a custom port (see screenshot in attachement) we get the following error: Code: 501 Not Implemented. The requested method is not implemented by this server. Although we have added on the cisco router a port forwarding for port number 9943. It is working when we access the website : port with the local IP address [URL]...
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Jul 26, 2011
I have read many, learning linux,apache,samba,vsftp,ssh..etc from this forum but now i am realy stucked and confused. My samba server has always been reached from internal aswell external networks.
I have switched 5 months ago to Telfort network ( i am not sure... ) but as far as i know it was no poblem to connect the samba server with windows explorer everywhere.No i get the only the login screen when connecting from outside the network and when filling in the credentials it just come back with the login screen. I don't have any problems internal when connecting to these shares and supplying the credentials.
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Jan 6, 2011
We have a application hosted in our server and it uses send mail for sending and receiving mails.mails can able to reach certain ids but it cant reach some ids. this is the log entry.
Jan 6 00:52:18 p2234270 sendmail[11009]: p046hWi5011897: to=<dinesh@heatstream.com>, ctladdr=<apache@p2234270.pubip.serverbeach.com> (48/48), delay=2+00:08:46, xdelay=00:00:01, mailer=esmtp,
pri=4530999, relay=smtp17.msoutlookonline.net. [64.78.22.100], dsn=4.1.8, stat=Deferred: 450 4.1.8
[code]....
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Jun 25, 2009
I have a Nis server on Suse 11 which is configured using Yast and nis clients on Suse and CentOs .All clients which is on the Suse Os is working fine. But on CentOs , users couldn't login using nis username.I have mounted home directory using nfs in fstab . I can switch to nis users homedirectory only when i am root. But nis users could'nt login on reboot.' ypcat passwd username ' is showing the output . No selinux is enabled in the client .Is there is any problem with Suse server to Centos Client in nis ??
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Sep 16, 2010
I'm unable to install this package, tuxpaint.I get errors in that it cannot reach the proper url or connection to the server?Not sure what I'm doing wrong.I figure the repo is correct and I thought I had the proper source since I've installed other packages.What could be wrong?
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Sep 24, 2010
I'm setting up my server under CentOS 5.5 (text mode) and I installed cherokee server but I couldn't reach it with the ip given by ifconfig. So I figured it might be an problem within cherokee. I also wanted to install webmin so I did that to see if I could reach that one. But also the webmin server is not reachable (I know the port number should be behind the ip ). So if I look up ifconfig I see the server has got an local ip (192.168.1.42) but I can't reach it from another computer in the same local network.
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May 16, 2011
i have a server program which accept multiple client connection and am using polling. like every 2 secs it will look to client whether any data is received after it binded. i have used setitimer but there is runtime error i got.. the server accept all client connection but doesn't execute any msg which client sent.
#include<stdio.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<netdb.h>
#include<unistd.h>
#include<pthread.h>
#include<string.h>
[Code]....
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Sep 28, 2010
Just installed openldap server on a VM CentOS called 'ldapsrv', it works fine, ldapsearch returns all ldap information.
Installed openldap client on another VM CentOS called 'ldapclient1', configured it with most basic configuration, no ssl/tls etc. but ldapsearch returns error:
ldapsrv is pingable:
Some outputs:
PHP Code:
PHP Code:
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Mar 13, 2011
I use Fedora 13 x86_64. Recently i installed q4 wine and booting froze with message "registering binary handler for windows applications". Then on removing q4 wine boot froze at "unexpectedly disconnected from boot status daemon".I also removed wine, smolt.
[Code]..
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