Ubuntu Networking :: Best Way To Setup IPv6 IPSEC?

Feb 12, 2011

I've been using IPv6 on my local network and through a Hurricane Electric IPv6 tunnel. I've heard that one of the built in features of IPv6 is encryption, both scrambling the data and authenticating where the traffic came from. I've done some searching and heard of SWAN and Racoon, but some of the stuff I found is old and I would like to know what the easiest/best way to set up IPSEC for IPv6 is.

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Ubuntu Networking :: No IPv6 In PPTP VPN Client Setup?

Feb 1, 2011

I'm trying to setup IPv6 in a PPTP client configuration on Maverick, but in network manager only IPv4 is available.

On LAN and WLAN IPv6 is working fine but I want to avoid when using a VPN all IPv6 connection are bypassing the VPN which compromises the VPN to a certain extent ..

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CentOS 5 Networking :: Setup A Perfect Server 5.5 With IPv6 Only

Mar 1, 2011

I have a he.net ipv6 tunnel account and a manage to pass all the test to sage mode, but with debian 6.

I would like to have a step-by-step setup of centos 5.5 with iRedMail 0.7, but for only ipv6.

iRedMail with LDAP
DHCP for ipv6 (optional, just wanted to see the config)

Can't seem to add jpg files.

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Fedora Security :: Setup IPSEC Encryption Between Two Boxes?

Jun 25, 2011

I have been trying to setup IPSEC encryption between two linux boxes. I have a server application which runs on Linux Box A and a client application which runs on Linux Box B. The client sends the data to server. I have captured wireshark logs at both server and client end. In the wireshark logs I can see that the Box B send ESP packets to the Box A.

But the server Application running at Box A is is not able to get any packets. If I turn the policy off at Box B, Box B sends normal UDP data packets to Box A, but still the Server Application running at box A doesn't get any packets.( Expected behavior since policy at Box A enforces that all packets coming from Box B should be encrypted.)

If I turn the policy off at Box A and Box B both, the server application receives the unencrypted data which is also expected behavior. But when the policy is turned on at both the boxes the encrypted packets reach the Box A but are not delivered to the server application. If anyone has faced such issue please help me to debug this issue. I have attached the ifconfig and policy settings at Box A and Box B for your reference.

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Fedora Networking :: Ipv6 With Tunnel Broker - Better Client For Non Native Ipv6 Connectivity?

Jul 22, 2009

I used to play with gw6c ( a client for tunnel broker ) It works well with fedora9 , fedora 10, but not with leonidas. my rpm is gw6c-6.0-0.4.beta4.fc9.i386.rpm ( a little old!) when I tried to install i have got this: libcrypto.so.7 est ncessaire pou w6c-6.0-0.4.beta4.fc9.i386 I try to make a soft link to libcrypto.so.0.9.8k, but nothing; The question :-Is there a solution for that pb - did you know a better client for non native ipv6 connectivity?

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Fedora Networking :: FC15 IPV6 Wireless Router - No Longer Gets An IPv6 Address

Aug 31, 2011

I have been struggling to get FC15 to act as an IPv6 router for a while now, am sure I am missing something trivial.. The idea is that I have a ppp / adsl connection (this works fine), use the wireless card on my pc with hostapd and dhcpd to provide connections to other pcs (works fine), and radvd to delegate ipv6 addresses.

The issue seem to be that as soon as I turn on ipv6 forwarding (net.ipv6.conf.all.forwarding =1), the ppp connection no longer gets an IPv6 address. This means the router cannot ping any ipv6 address outside my network.

If I disable ipv6 routing, my router gets an IPv6 address on its ppp connection, and can ping things such as ipv6.google.com just fine, however (of course) no packets are forwarded from my network and radvd complains that forwarding is disabled.

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OpenSUSE Network :: Setup Samba To Work Over IPv6?

Jun 8, 2010

Is it possible to setup samba to work over IPv6?

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Networking :: IPsec VPN Connected - But Cannot See Other Side?

Aug 24, 2010

I have an IPsec VPN between 2 Ubuntu 10.04.1 Boxes which is working perfectly. However I cannot get any traffic to route down the VPN link.Interestingly, when checking the routing table, there isn't even a route list for the remote network. This is the same on both sides. Also there isn't an ipsec0 interface listed either.However, when a the command "sudo service ipsec status" is ran, it definately shows the tunnel is up and connected.

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Networking :: Ipsec Service Can't Start?

Sep 9, 2010

I install openswan on rhel6 and when i execute the command "service ipsec start "

it say:
/usr/libexec/ipsec/addconn Non-fips mode set in /proc/sys/crypto/fips_enabled
/usr/libexec/ipsec/addconn Non-fips mode set in /proc/sys/crypto/fips_enabled
ipsec_setup: Openswan IPsec apparently already active, start aborted


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Fedora Networking :: Perform A VPN Lan To Lan IPSEC Connection?

Jul 21, 2009

I'm trying to perform a VPN lan to lan IPSEC connection. By my side, I have a server with 2 IP's, i.j.k.l (destined to act as a VPN gateway) and i.j.k.m (the server). I am a newbie. I don't know if this configuration is normal, but it's forced by our partner.

My configuration is:

OS: Fedora release 7 (Moonshine)
OpenSWAN version: Linux Openswan U2.4.7/K2.6.23.17-88.fc7 (netkey)
# /etc/ipsec.conf - Openswan IPsec configuration file
# Manual: ipsec.conf.5


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Networking :: Allowing IPSec/L2TP In Iptables?

Jun 4, 2010

I had configured IPSEC/L2Tp on my Centos 5.4 gateway machine .For testing i had disabled firewall and Ipsec is working fine.I am able to connect from client etc...Now i want to allow Ipsec and l2tp throught Firewall.here is my Current Working Firewall.Only Openvpn is allowed and is Redirected.

OpenVpn IP Range =
Ipsec Ip Range =


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Networking :: EstablishingVPN Connection Using IPSec Services

Jun 4, 2009

i would like to establish a VPN connection which can hold either 'two' hosts..and secondly if that's done i would like to go for more number of users..Can i do it using IPSec services??if yes then how?

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Networking :: IPsec - Tunnel Restrictions And Users?

Jun 22, 2011

While I successfully configured an IPsec-VPN (I use a similar tho modified setup like this:[URL].. I am now stuck on the next steps. While I can connect to everything I want, I need to configure "access-groups" and/or "users".

The scenario is similar to this: Lets say Host A, B and C allow SSH-Connections and some weird non-standard UDP-Connection from Host-VPN, and are also accessible on other ports with public IP's (like http).

I now want to limit, that an admin-user has access to all of them, while trainee-admin only can access everything on Host B and C, and CEO only can connect via telnet to Host C - and all users can be roadwarriors

(I made this example up to give you an idea what i'm trying to do - hope it makes sense). Now my question is, if someone can point me towards a direction, as I'm quite clueless at the current moment as to what to try. I know that commercial IPsec-Implementations can do this, but can OpenSWAN/... give me something similar?

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Networking :: IPTables NAT - Excluding Subnets For IPSec VPN

Feb 27, 2011

I have a Ubuntu 10.10 box which i've developed an IPTables Firewall script and is forwarding my ports correctly. This service also runs Openswan VPN Server with 2 VPN's, which is also working well.

I have come across a small snag with excluding the multiple VPN subnets I have from the NAT on this box.

I have the line in my configuration file:

-A POSTROUTING -o eth1 -s -d ! -j MASQUERADE

Which when added to IPTables does make the VPN come to life. But I can't seem to get it to add the second subnet. Unfortunately, I can't do a blanket exclusion such as because the second VPN is on a Class B subnet address which I cannot change.

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CentOS 5 Networking :: Ipsec - Get Access To All The Subnets?

Aug 18, 2011

Connecting two networks with ipsec on this manual [URL] The two networks are connected, everything works, the question is as follows: For a gateway to multiple subnets, I have access to only one subnet is listed in / etc/sysconfig/network-scripts/ifcfg-ipsec0 DSTNET = How do I get access to all the subnets?

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Ubuntu Networking :: Setting Up IPSec VPN Server On 8.10 LTS To Work With IPhone Clients?

Apr 3, 2010

I've searched through google, and all I can find are instructions on how to set up a L2TP/IPSec VPN that works with macs and iPhones. I'm NOT trying to set up an L2TP/IPSec VPN. I'm trying to set up a pure-ipsec vpn.

The iPhone IPSec client is a built-in cisco client, I believe. I'm staying away from L2TP and PPTP because I need multicast packets to go through. *edit: wow, i just noticed that the title says "8.10 LTS". Oops! I obviously mean "8.04 LTS". Gah, the lack of sleep got to me.

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Ubuntu Networking :: Vpnc Traffic Routing - IPSec Target Network?

Nov 16, 2010

I just got vpnc setup to work with my VPN at work and now I am trying to figure out how to limit the traffic that is routed through the VPN while I'm connected to it. I only want traffic going to the local domain to be routed through the VPN.This is what my vpnc config file looks like:

IPSec gateway publicdomain.example.com


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Networking :: Possibility To Transport One Or Two VLANs Through A VPN (IPSEC) Link?

Apr 29, 2010

Is there any possibility to transport one or two VLANs through a VPN (IPSEC) link on Linux

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Networking :: Debian Etch - OpensWan - Zyxel Prestige Ipsec Vpn?

Jan 19, 2010

i need to build an ipsec vpn between a linux debian server and a zyxel prestige, The debian server got 2 ethernets connection one for the internal network and the other one is public with a public ip adress.I need to know what i need for the build the tunnel, could you please let me know what i need? Let me explain i have only to configure openswan or i have to configure the iptables or somethings else too? I found this one do you think this would be work for me? [URL]..Is debian a right distro or should i try someone else?

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Networking :: Good Tutorial In Order To Learn IPSec Vpn With System?

Dec 17, 2010

I've no experience with IPSec. I've used many times OpenVPN (with static key or certificates x509).
Could anyone suggest me a good tutorial in order to learn IPSec vpn with Linux?

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Networking :: Ipsec - Racoon Roadwarrior Client - Main Mode - Hybrid_rsa Authentication?

Jun 28, 2011

My client is on Ubuntu Lucid 10.04, I installed ipsec-tools and racoon from the repositories. The gateway is installed on a CentOS machine. I've configured everything to get a working roadwarrior configuration with authentication_method hybrid_rsa client and server. It's working in aggressive mode, but in main mode I can't get it working. I delivered new CA and certificates several times but I'm still stuck.

It seems that it comes from my client not supporting the certificate sent by the server. The client contains a copy of the CA, whereas server has a private key and a certificate signed by the CA.


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Ubuntu Networking :: No Ipv6 Ip From ISP?

Nov 29, 2010

I have Ubuntu 10.10 installed on my laptop. My ISP natively supports ipv6, but since last weekend, I do not get an ipv6 ip. When I use a live cd however, I do get an ipv6 ip. For as far as I can see, all settings (/etc/network/interface and the settings in network manager) are exactly the same.

Output of ifconfig:

eth0 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX
inet6 addr: XXXX::XXXX:XXXX:XXXX:XXXX/64 Scope:Link


EDIT: is there a way to let the netwerk be automatically configured as happens during installation? It would be nice to start with a clean and new set of network config files as there were just after I installed Ubuntu on my system, without a full reinstall of my system.

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Ubuntu Networking :: Can't Get IPv6 Address

Nov 4, 2010

I have a networking problem with my computer. Under Windows, the computer can get both v4 and v6 address via DHCP. However, the same computer can only get v4 address under Ubuntu. Does anybody know how to solve this problem?

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Networking :: Disable Ipv6 In Ubuntu 9.04?

Apr 2, 2009

I have tried to disable the ipv6 support in ubuntu 9.04 32bit but the /etc/modprobe.d/aliases does not exist so I can't disable the suport as sugested for the previews versions. I need to disable it becouse it is pounding a total maihem in my vamware machines.

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Fedora Networking :: [ipv6] What Is Ubuntu Making Different?

Jul 6, 2010

some of you might have experienced the network speed problem that occurs when ipv6 is enabled. So have I. I know about the common workaround of disabling ipv6, but recently I tested the new ubuntu live system, and the problem was gone with ipv6 being enabled.

Now my question is: Do you know what ubuntu is making different? I haven't found an explanation. Is there a better workaround than blacklisting ipv6?

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Ubuntu Networking :: Wireless Can.t Connect With IPv6?

May 4, 2010

I cannot connect to wirelessly when I have IPv6 enabled for the wireless network card. It works great on ethernet, but if I enable it for the wireless card then I cannot even get IPv4.

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Ubuntu Networking :: IPv6 Addresses Cannot Be Assigned

Sep 18, 2010

I'm trying to assign like 80 IPv6 addresses on eth0 for virtual webhosting, but after 55 addresses I get the following error:# ip addr add 2a01:9f8:a171:1651::4b:a8af dev eth0 RTNETLINK answers: File exists.What's the problem? I don't understand that error message at all. Is the number of IPv6 addresses per device somehow limited?Ubuntu 10.4.1 server, 64 bit.

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Ubuntu Networking :: How To Share IPv6 Connection

Nov 15, 2010

I have a small wireless network running IPv6 connected though a 802.15.4 usb stick, and a network connection through eth1. I can access the nodes on the wireless network from my computer, but not from any other on the wired LAN. Also the nodes on the wireless cannot see even the address of eth1. I'm guessing i have to forward all packets from the wireless to eth1 in some way, but am unable to find an guides for this with IPv6.

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Ubuntu Networking :: Ufw Blocks IPv6 Connections?

Jan 10, 2011

I've just started using ufw with the frontend gufw. I've configured it like this:

Accept everything in and out as default Block incoming FTP connections from a certain IPv4 address (brute-force for days)

Today I noticed that IPv6 connections don't work anymore. The connection to two hosts (IPv6 only) times out. As soon as I disable ufw entirely, the connections work again. The host I want to connect to is:

2001:638:a00:f00b:200:1cff:fedb:d38f port 7337
2001:638:a00:f00b:a00:6ff:fe07:cda2 port 7337

These are small telnet servers that print out a number (temperature nearby) and close again. I'm logging those values in a database.

Is ufw not IPv6-capable and blocks things it's not supposed to?

Update: ufw seems complete garbage to me... You can't even configure it while it's disabled! How am I supposed to safely activate it when the first thing it does is blocking all communications? I can't even configure it to let me in before I configure it to keep me out... And then, even if I explicitly let it pass port 7337, it still blocks it through IPv6.

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Ubuntu Networking :: How To Config Dyndns With Ipv6

Mar 10, 2011

I have just installed dyndns in my local ubuntu server runing on apache...I dont have static Ip's so I have to use ipv6 ip's how can I configure dyndns to run with ipv6 ?

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