I had installed openvpn in linux machine (public ip) remote pc.. and installed client openvpn in windows xp machine (local network )remote pc... ...how can i accesss openvpn server to access local lan network without performing NATING in firewall.
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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?
View 14 Replies View Relatedhow can i make openvpn to access my entire office lan network through linux firewall.
how can i allow remote client with (private ip)to access my entire ofice network through linux firewall
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?
I can't get my openvpn work if the firewall is on , and I also don't see any option to allow openvpn service in firewall allow service.
View 1 Replies View RelatedI have OpenVPN running on my Ubuntu Server just fine. I can connect over the Internet and access all my resources on the LAN via bridged mode perfectly. My server only has one LAN card and sits behind my router, which means it has a private IP address of 10.1.1.2....Which brings me to my question. I want to open up access to my friends via OpenVPN, but I don't want them to be able to access other machines on my LAN (e.g. 10.1.1.20). However, I do want them to be able to talk to each other and pass broadcasts (old LAN games), as well as my laptop (let's say 10.1.1.7).I've tried using iptables to block traffic to the LAN (such as .20), to no avail. I've been reading up and it seems as though iptables won't even filter the traffic, as it's passed at a lower layer. Is this true? If so, what do you recommend I do in order to prevent my buddies from accessing the rest of my LAN while siumultaneously allowing broadcasts pass for some very old Windows LAN games (we're talking Windows 9.
View 2 Replies View RelatedI 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.
Within the documentation of example OpenVPN setups there is a setup that shows an OpenVPN Server with two network interfaces. One interfaces is plugged into the public internet network and the second interface is plugged into the private network.
Normally I assume that it would be best to place the OpenVPN system inside the network behind the router and firewall and open only the ports needed on the router to allow access to the OpenVPN system. All other router ports would be closed. This is the first example they show. To see what I am talking about see page(s) 6-7 here -> [URL]
If one were to use the two interface public facing setup, when would that setup best be justified? I guess if you didn't want to open any ports on the router/firewall then this could be justified but then you have to lock down this public system individually instead of having it protected by the network firewall.
I'm getting a timeout error from NetworkManager when attempting to connect to my router/firewall.
Excerpt from /var/log/messages attached.
I use openvpn to connect otherwise isolated machines, and use samba to share filesystems across the vpn, which works just fine.But I recently discovered that copying files using rsync -e ssh is so much faster than copying from a mounted filesystem - like about 5 times faster.I've got comp-lzo enabled in both server and the client, at least I think I have, the directive is there in both the server.conf and the client.conf files, but how do I check that it's active?Does anyone know if I can make openvpn behave more like rsync, because copying is easier than rsyncing?
View 8 Replies View RelatedIn my client side, i got 4 machines(2 database server,2 application server). One database server for DC and another database server for DR. Similarly, I need to use the application server also. The two database server are having the same ip.(192.168.1.10) and two application server are having the same ip(192.168.1.11). But they give the another ip for all machines like below.
DC-Database server-10.168.12.40 DC-application server-10.168.12.21
DR-Database server-10.168.13.40 DR-application server-10.168.12.21
Now i want to do the IP Natting.
I have cent OS 5.5, i am not getting proper command for the same.
View 6 Replies View RelatedSamba is working correctly if Susefirewall2 is off. I have added Samba client and Samba Services for extern access but samba is not working when firewall is now on. Which services should I also add ?
View 1 Replies View RelatedI have openVPN working with a thirdparty CA, and validating UID entries from the client certificates in LDAP groups. My next step is to figure out OCSP to make sure revoked certificates are denied. I could dump out my CRL as a nightly job, but that of course presents a window where a revoked certificate is still valid. how to dump out client certificate back to pem format? For the ldap check all i was using was the DN, which doesn't really help me for openssl/ocsp
View 5 Replies View RelatedI've setup a PPTP server on my ubuntu 11.04. PPTP settings seem to be OK and I can connect to my machine from a Windows PPTP client. But then I dont have access to Internet from my Windows machine. Authentication is successful and I can see GRE traffic to my PPTP interface on my Ubuntu, but I can't reach any host (including Internet) after my Ubuntu machine. I suspect this is a routing or NATing issue.
View 1 Replies View RelatedWhenever I am starting Tomcat5 service in RHEL5 it is showing that it is starting but after some time (after 5 sec.) the status it is showing that lock file found but there is no such process for PID * (where * = different PID no.) and tomcat is not working.
View 2 Replies View RelatedI installed OpenVPN, placed conf, keys and certs into /etc/openvpn/. I did
Code:
sudo openvpn --conf /etc/openvpn/client.conf
And everything seemed alright, but when I actually try accessing something that I need VPN for, it doesn't work (it's the same as if I wasn't in VPN). I also tried using GOpenVPN but the results are exactly the same. I know the confs are ok as I use the exact same files on Windows 7 and everything's fine. I even disabled ufw, restated machine etc, just to be sure.
I'm involved in a project to students set up a network security training lab using vmware. I want to simulate (in a very rough way) scanning through a poorly configured router or firewall. The easiest way I can think of to simulate this is to use a linux vmware image with two virtual nic cards to act as a firewall with the attacker on the outside network and a domain controller, web server, and database server on the inside network.
I would like to start students off with a firewall script that exposes everything on their internal network to the attacker. Is there an easy way to (mis)configure iptables to do this?. The model I'm trying to replicate is something like this. Attackers were on a 10.10.x.x network, defenders were on a 192.168.x.x network. As an attacker I could nmap 192.168.x.x and see every machine and every service on the defenders side even if they moved a service to an unexpected location. how I can implement a similar configuration using a linux image as firewalls/routers in vmware?
I have an OpenVPN setup at work, and windows clients are able to connect fine. On my dual-boot system (Windows XP 64-bit and Ubuntu 10.10 64-bit) I'm able to connect on Windows but not Ubuntu. I use the same files for each. The network manager wasn't working, so I'm doing it via the command line right now:
Below is the output (sanitized)
Code:
Does this mean it's connected? If so, I'm not able to ping anything on the remote network, not even the OpenVPN server.
I am new with IP tables stuff and i have a problem....i have a pc Contain a fedora OS and i want to make a small network (4 PCs Contain XP OS) and using the pc of fedora OS as a firewall i want to Prevent the ping (i think it called(ICMP)) in the privat network and prevent one of the PCs from Browsing internet(prevent port 80 and 81 as i think) and i still don't know how to make the internet go Through the firewall to the private network...
Note: WAN = eth0
LAN = eth1
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]....
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
I am running a quad core centos 5.4 box that is having a strange problem with dovecot. The administration panel is able to send emails through dovecot but not any of the user accounts (ie with webmail). I've done a bit of research with what could be wrong but haven't had any luck so far I am also having a weird problem with apache: on a c++/php bittorrent application I was going to be running on a subdomain of my main site I get a 500 error every time I try to log in. The only way to get rid of the 500 error is to clear the chache (so its horribly broken somehow). The error generated in the log whenever I try to log in is that "ffmpeg is already loaded" (which I am running on the main site and is critical). Is there a way of either repairing my apache install or excluding ffmpeg on the subdomain in the conf or something?
View 2 Replies View Relatedi 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]...
I just erased WinXp and installed Ubuntu on old laptop. I intend to use it later ot connect to public Wi-Fi. Do i need to install a firewall GUI and make any special settings? I didn't encrypt home folder during installation. I probably should have done it. But i am already low on system resources (224MB ram, 1.2Ghz CPU). Would that use up any additional resources? Would it make computer run slower? Can i still encrypt the home folder after i installed the system?
View 3 Replies View RelatedI will be relocating to a permanent residence sometime in the next year or two. I've recently begun thinking about the best way to implement a home-based network. It occurred to me that the most elegant solution might be the use of VM technology to eliminate as much hardware and wiring as possible.My thinking is this: Install a multi-core system and configure it to run several VMs, one each for a firewall, a caching proxy server, a mail server, a web server. Additionally, I would like to run 2-4 VMs as remote (RDP)workstations, using diskless workstations to boot the VMs over powerline ethernet.The latest powerline technology (available later this year) will allow multiple devices on a residential circuit operating at near gigabit speed, just like legacy wired networks.
In theory, the above would allow me to consolidate everything but the disklessworkstations on a single server and eliminate all wired (and wireless) connections except the broadband connection to the Internet and the cabling to the nearest power outlets. It appears technically possible, but I'm not sure about the various virtual connections among VMs. In theory, each VM should be able to communicate with the other as if it was on the same network via the server data bus, but what about setting up firewall zones? Any internal I/O bandwidth bottlenecks? Any other potential "gotchas", caveats, issues? (Other than the obvious requirement of having enough CPU and RAM).Any thoughts or observations welcome, especially if they are from real world experience in a VM environment. BTW--in case you're wondering why I'm posting here, it's because I run Debian on all my workstations/servers (running VirtualBox as a VM for Windows XP on one workstation).
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]...
View 2 Replies View Relatedi have two questions and thought that anyone here could have the answers.first things first,i want to make firewall accept a range of ports (say 8000:9000) because im using mpd process manager to make some parallel processing, does anyone know the command that satisfy this?
the second thing is, when i open a range of ports like that, it would put my system at risk if some bad guys somehow identifies this range, is there is anything that solves that matter(i.e. makes the firewall monitor the packet, if its an mpd accept if not drop)
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.
How do I get my firewall up and running to secure the ubuntu servers.. I have 2x network cards & 1x pppoe connection atm.
eth0 192.168.1.200 / eth1 192.168.0.200
and the ppp0 connection
iptables looks like this so far.
# Generated by iptables-save v1.4.4 on Thu Dec 9 11:12:04 2010
*nat
PREROUTING ACCEPT [108:8763]
:OUTPUT ACCEPT [52:3594]
POSTROUTING ACCEPT [111:10071]
COMMIT .....
A far as I can see my ppp0 connection is open atm & I would like to close off any traffic except ports 80 10000 5900 21 & 22.
