Helpful ReplyHot!Fortigate 90E / Virtual network ?

Author
johnwillsmith
New Member
  • Total Posts : 2
  • Scores: 0
  • Reward points: 0
  • Joined: 2018/06/12 08:03:58
  • Status: offline
2018/06/12 09:06:13 (permalink) 5.4
0

Fortigate 90E / Virtual network ?

Hello,


I need to create a VPN between our agency (using Fortigate 90E) and an external consulting company (using Cisco router). There would be no problem to create the S2S VPN between the two sites, except that our subnet is already known by the consulting company (192.168.1.0/24). So I can't create it for the moment.
Therefore, they asked me to set up a NAT or an equivalent technical solution for the VPN connection in order to be able to make appear our network like 192.168.7.0/24 or other, so that it does not come into conflict with the subnet 192.168.1.0/24 already known at external consulting company.  
 
I joined a diagram to understand the desired topology.

I do not know if it's very complicated or very simple, I may be missing the technical solution but I wanted to know if you had any idea about this implementation on an UTM Fortigate 90E.
 
Thank you in advance.

Attached Image(s)

#1
ericli_FTNT
Gold Member
  • Total Posts : 125
  • Scores: 4
  • Reward points: 0
  • Joined: 2018/02/08 11:12:27
  • Status: online
Re: Fortigate 90E / Virtual network ? 2018/06/12 09:21:36 (permalink) ☄ Helpfulby johnwillsmith 2018/06/13 08:42:09
0
Hi John,
 
There is a document to explain the concept of resolving overlapping subnet over IPSEC vpn.
 
http://cookbook.fortinet.com/vpn-overlapping-subnets/
 
Please take a look before we could move forward. Thanks!
#2
sw2090
Silver Member
  • Total Posts : 70
  • Scores: 6
  • Reward points: 0
  • Joined: 2017/06/14 01:27:25
  • Status: offline
Re: Fortigate 90E / Virtual network ? 2018/06/12 23:37:38 (permalink) ☄ Helpfulby johnwillsmith 2018/06/13 08:42:16
0
Yes but keep in mind that this coobook doc will only apply to firmware up to 5.2.5.
Ich you have 5.4.x or later on your 90E it won't work out. In this case use http://kb.fortinet.com/kb/microsites/search.do?cmd=displayKC&docType=kc&externalId=FD33872&sliceId=1&docTypeID=DT_KCARTICLE_1_1&dialogID=24658171&stateId=1%200%2024656671 instead! I also mentioned that in the commentary section on the kb doc when I ran into that issue and the author confirmed that.
#3
johnwillsmith
New Member
  • Total Posts : 2
  • Scores: 0
  • Reward points: 0
  • Joined: 2018/06/12 08:03:58
  • Status: offline
Re: Fortigate 90E / Virtual network ? 2018/06/13 08:41:35 (permalink)
0
Hello,
 
Thank you for this solution. I better understand what was my problem. I set my router this afternoon in this direction and I'm waiting for return of the other company to find out if it works.
I'll keep you informed.
Thanks again.
 
John w.smith.
#4
SriramPrakash
New Member
  • Total Posts : 9
  • Scores: 0
  • Reward points: 0
  • Joined: 2018/06/18 22:44:01
  • Status: offline
Re: Fortigate 90E / Virtual network ? 2018/06/19 04:32:17 (permalink)
0
Hi Smith
 
kindly update how did you resolve this issue 
I am new to this FortiGate right now I have doubt you have tried Site to Site VPN you have faced same subnet issue  
why don't you try site to client VPN have to tried it means what kind of issue you have been faced let me know to educate myself  
post edited by SriramPrakash - 2018/06/19 04:35:23

Thanks & Regards
Sriram Prakash
#5
Jump to:
© 2018 APG vNext Commercial Version 5.5