While the suggestions above didn't work for me they led me to a working solution:. In my case it was ppp0 with an ip address of When I tried using dev ppp0 for the end of the route command as mentioned above, it complained.
I have a simple solution that I'm using at a co-working space that has a conflicting IP range I connected to the network with my mobile phone, then I shared the network connection via bluetooth with my laptop. I can now use the VPN for my remote employer. If you just need to hit a few one or two ip addresses, add route statement to your ovpn configuration file like this:.
It will add a route for just those Ip's when you connect your vpn and remove it when the vpn it disconnected. Just as a reminder: this whole issue is due to years of IPv4 address shortage, and extensive use of private IP range behind NAT to workaround this shortage! The ideal and definitive solution to this issue is quite straightforward albeit it can, and will, takes some time to be globally rolled-out : IPv In an IPv6 world, there's no public IP shortage and there won't be, event in a few decade.
So there no reason not to have a public IP on each and every device of every network. And if you need network isolation, keep filtering with a firewall, but without ugly NAT Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Connecting to a remote server through a VPN when the local network subnet address conflicts with a remote network Ask Question.
Asked 8 years, 2 months ago. Active 9 months ago. Viewed k times. Does anyone know how to mitigate this issue? I have access to the OpenVPN server.
Improve this question. Falcon Momot John Russell John Russell 1 1 gold badge 4 4 silver badges 5 5 bronze badges. SpacemanSpiff: While this could solve the issue on the client side, the server would still be unable to reply, because it would see the connection as coming from its own network, not from a VPN client. Add a comment. Active Oldest Votes. It is possible to solve this using NAT; it's just not very elegant.
So under the assumption you couldn't solve this by having internal nets which have so uncommon network numbers as to never actually come into conflict, here's the principle: As both the local and remote subnet have identical network numbers, traffic from your client will never realize it has to go through the tunnel gateway to reach its destination. Making some nets up here: Your office network uses An example: Your office network host The following happens: At the remote office, host At the remote office, host At the office, host At the office, return traffic to host So whilst there is a solution, there are a number of issues which must be addressed for this to work in practice: The masqueraded IP must be used for remote connectivity; DNS gets complex.
This is because endpoints must have a unique IP address, as viewed from the connecting host. Statically mapping hosts is a must for reachability from the other end. Can a solution to this issue be carried out in ASDM?
Go to Solution. For example the left ASA translates View solution in original post. Double NAT is what I am looking for.
To what subnet should our client setup his VPN tunnel? To the translated subnet on our side or to the original subnet? I assume to the translated one but I'd rather double check. There you use an object for The original destination address is the translated network of the other side, the translated destination is "original". For IPsec, you need to extend the crypto definition to the translated network as the IPsec-tunnel only sees the translated traffic.
Let's say I just create the IPSec tunnel with The other side will configure that 80 subnet as well as Remote Local. Can't I just create the NAT rule then from to 80 without extending the cryptomap? They will be using their. I will be the only one performing the double NAT to circumvent the subnet on both sides issue.
But you cant't use I just read you post again and again The networks don't have to communicate with each other? Only on one side with 90 on the other? On my last post I always had in mind that the networks also have to communicate with each other Sorry for any confusion! Hey, don't be sorry you taught me something new today!
Yes indeed, our local subnet should communicate with their 90 subnet. On their side they have another identical subnet but that is not the one which should communicate with us over VPN. I just mentioned it because it is gonna be a problem when setting up a regular VPN tunnel. Yes, your config looks good for that. There is one point that needs to be checked. The connection-profile has the option "NAT Exemption" marked.
Probably that has to be removed. First I tried this out in a lab setting with real hardware. When setting up the tunnel, nothing happend. At all. The monitoring showed 0 sessions.
They could just be on the same subnet. Get answers from your peers along with millions of IT pros who visit Spiceworks.
Good day all. On the firewall at my location i am doing the following; 1- Configure an address object with the new translated address e. Which of the following retains the information it's storing when the system power is turned off?
Submit ». PatrickFarrell This person is a verified professional. Verify your account to enable IT peers to see that you are a professional. Thai Pepper. Pure Capsaicin.
RudyM wrote: Good day all. Replace Attachment.
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