Questions tagged [vpn]

For questions about Virtual Private Networks (VPNs).

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14 views

Can I set fragmented IPv4 packet's DF bit to '1'? [duplicate]

If make DF to 1, can I confirm that fragmented packet with DF=1 will go through routers to the dest IP without any reassembly and re-fragmentation?
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17 views

How to remotely access my home VPN internet connection [closed]

I'm living in a country where the internet is fast but highly censored. I've set up a VPN server based in the US, but I'm only able to receive a reasonably fast stream of data from it on my home ...
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14 views

Using a local DNS server while connected to a VPN on a windows PC [closed]

I have a home network with most devices running NordVPN. I have a raspberry pi acting as a mini home server - and have just started using Pi-Hole a DNS program that points various tracking and ...
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0answers
27 views

openvpn-client in docker container port forward from openvpn-server not working [closed]

I have set-up a port forwarding at my VPN provider like: VPN_EXT_IP:60000 --> VPN_INT_CLIENT_IP:60000 I have a docker-compose which looks something like: version: "3.5" networks: ext: ...
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0answers
18 views

TACACS Through ASA L2L Tunnel

Hello see below network diagram. I am trying to configure the Branch Router (10.1.1.1) to use TACACS AAA on the HQ-AAA-Server host (192.168.10.10). TACACS works fine for the Branch-FW1 ASA device ...
1
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2answers
65 views

Protecting RDP connections, full remote control

In my workplace people are connecting with their PCs (with Windows on them) through basic RDP when they work from home. The only precaution taken is changing default 3389 port to a diffrent one and ...
3
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0answers
59 views

SSH to ASA on Exit Side Of VPN Tunnel

I have a functioning L2L tunnel between two ASA devices (HQ-FW1 and Branch-FW1 on the diagram). HQ-PC2 - 192.168.10.21 HQ-FW1 eth0 - 192.168.20.2 (outside) HQ-FW1 eth1 - 192.168.10.2 (inside) Branch-...
3
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2answers
131 views

TACACS+ AAA over L2L VPN

I have a practice network set up with the relevant topography shown in the below image: I have TACACS+ running on HQ-AAA-Server (192.168.10.10) and AAA working using it on HQ (IOS) and HQ-FW1 (ASA). ...
2
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1answer
61 views

Cisco ASA Clientless SSL VPN Apply Tunnel Group

I'm trying to implement the answer from a previous question I've asked (Cisco ASA Clientless SSL VPN Restrict Network Access) My ultimate aim is to set up an SSL VPN on a Cisco ASA device to allow ...
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1answer
56 views

Cisco ASA Clientless SSL VPN Restrict Network Access

I'm working on a Uni project to set up a secure network. One aspect is to have a VPN for clients of the imaginary company to access web based services. I have set up a simple clientless SSL VPN which ...
3
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1answer
62 views

Wireshark Decrypting IKEv1 Text PSK to Hex

I'm trying to debug a Cisco VPN setup as part of a Uni Lab (so please don't worry about posting of keys etc. it's just a toy setup with no internet facing connection). I want to decrypt the IKEv1 ...
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1answer
38 views

Can UDP traffic be transmitted over TCP ports on OpenVpn to avoid the TCP meltdown

I understand the TCP meltdown problem is associated with overcompensation from errors and incorrect sequencing when arriving the the receiver end. OpenVpn connections are recommended to use the UDP ...
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1answer
290 views

IPSec IKEv2 on pfSense: "parsed INFORMATIONAL request 2 [ N(AUTH_FAILED) ]"

I am trying to setup an IPSec IKEv2 VPN Network on a pfSense. The pfsense is situated directly behind the modem. I connect to it by a static IP address. There is no double NAT. I followed this ...
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0answers
19 views

Personal VPN sub-network accessible through Work VPN? [closed]

I currently access my work network via Cisco VPN. At work, I have my own three computers and NAS on a personal dedicated router using my own DHCP. For several reasons, I do not want these computers to ...
2
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2answers
209 views

Site-to-Site VPN with Sophos XG using tunnel interface

So I have configured a Sophos XG site-to-site vpn according to this document: https://docs.sophos.com/nsg/sophos-firewall/18.0/Help/en-us/webhelp/onlinehelp/nsg/sfos/learningContent/...
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1answer
47 views

Why is the VPN throughput reduction different when using a cellular network and when using Ethernet? [closed]

I built a VPN server using openvpn as a protocol and measured the throughput between server and client. There are significant throughput reduction at cellular network. Throughput decreased by more ...
4
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1answer
280 views

Cisco IOS -> ASA VTI tunnel not routing traffic

I have a VTI tunnel configured between two devices (ASR and ASAv). The tunnel comes up fine and is stable, however traffic appears to be unidirectional, from the ASR -> ASAv but not in the reverse ...
1
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1answer
56 views

Internal network inside an internal network

I have the task to integrate 4 PCs (1 server, 3 workers) into a local network (from a bigger organization). The admin of that network only allows me to integrate the server directly into the network (...
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1answer
63 views

VPN/IPsec router support in Packet Tracer

I would like to know, if a router doesn't support VPN (meaning it can't be used as a VPN server) can it still route an IPsec packet? And which router I should use as a server for IPSec (AH tunnel mode)...
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0answers
40 views

Multiple Site-To-Site VPN

I'm trying to set a VPN that allows all site: site0-4 to communicate with each other. The site called otherSite should not be in the VPN. Note that there's a NAT for site 0, 1 and 2 but site 3,4 only ...
1
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1answer
50 views

Site to site vpn setup

I am trying to set up a small network for my startup. We have 2 small servers at separate locations and would like to set up a vpn thorugh which the 2 servers can talk to each other and through which ...
1
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0answers
286 views

IKEv2 between Cisco router and Google cloud VPN

Hey I'm trying to create a tunnel between cisco router and google cloud vpn (client site) but the connection is stuck on stage 2 (UP-IDLE), need help where the problem may lie. Some debug that I get ...
1
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1answer
105 views

WatchGuard Geo Location for restricting access to VPN and "Access Portal"

Problem We want to use WatchGuard's Geo Location to restrict access to our "Access Portal" and "Mobile VPN" connections, but see no options and the corresponding "Firewall ...
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0answers
176 views

UNIFI USG GATEWAY IPSEC OVER L2TP VPN [closed]

At my office I have a Unifi USG Gateway that currently has 3 IPSEC VPN Tunnels (Lan-To-Lan VPN) configured. I also have a L2TP Remote VPN Network configured so that when I'm outside of my office I can ...
0
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1answer
28 views

what is significance of proxy id while configuring site to site vpn tunnel . why we should use proxy id and in which scenarios

i came know about proxy id configuration for first time. when iam troubleshooting site to site vpn tunnel configuration along with vendor . post configuring proxy id issue got resolved . But iam still ...
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2answers
93 views

Concurrent site-to-site VPN tunnels through dual ISPs (with 2 couples of Cisco ASA) between same devices

I currently have a simple site-to-site VPN setup, connecting machines from site 1 to site 2 through 1 ISP, using a set of ASA 5506X. All is good. I'd like to "double" that setup for ...
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0answers
20 views

MPLS provider A L3VPN to MPLS provider B migration

i have a Datacenter infraestructure with a mpls of SP A, and i would like to migrate to another wan line of a different SP B. Mpls current circuit is providing L3 VPN service, one VPN per remote site. ...
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0answers
1k views

Cisco site-to-site VPN tunnel Failed to find a matching policy [closed]

I have PaloAlto (PA) and Cisco ASA 5585-X located on two different sites, trying to configure IPsec VPN tunnel. [PA]-----------(internet)-----------[Cisco ASA] If i ping from Cisco ASA side lan to PA ...
0
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1answer
378 views

How to connect to different VLANs through VPN

I have the following setup: I have setup a Layer 3 Switch with multiple VLANs Multiple devices are connected to it on different VLANs via untagged access ports There is also a router connected to the ...
1
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1answer
165 views

VPN with Cisco virtual ASA on Azure not routing correctly

I've deployed a Cisco virtual ASA in Azure to use as a VPN server. For simplicity, I'm using just the management interface as the lan for the time being (10.2.0.4 is the interface). I want to use the ...
0
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1answer
18 views

VPN protected resource and accessible via authenicated API - design [closed]

let's imagine a simple system deployed on GCP. There is public, authenticated (token, IP whitelisting) API exposed by our system. There is a protected resource R (SQL database) that is accessible by ...
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0answers
26 views

Does modifying a ASA tunnel create a downtime?

I inherited a cisco ASA, I never really had to manage one before. But, I need to modify an existing tunnel to add IP addresses to both the local and remote traffic selector, specifically there are ...
3
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1answer
139 views

Can a server on the other end of a site-to-site vpn be exposed (NATd) to a public IP on an ASA

AWS DataCenter ----------- site-to-site VPN ------------ http server <=======================> Cisco ASA public address 10.0.1.59:443 ...
2
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0answers
41 views

Router on one side of a GRE tunnel not adding OSPF route through the tunnel whilst the router on the other side is

I have configured GRE tunnel between the Dublin and Carlow routers with the following commands: //Carlow int tunnel 0 ip address 172.16.12.1 255.255.255.252 tunnel source s0/0/0 tunnel destination 87....
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0answers
38 views

Why public VIF must be used in AWS Direct Connect + VPN setup?

I am unsure why public VIF must be used in AWS Direct Connect + VPN setup. Usually if you are connecting to Virtual Private Gateway you should use private VIF as shown in AWS Managed VPN Diagram on ...
0
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2answers
36 views

Is connecting via 2 VPNs secure

I know there are VPN services like Speedify that you can connect to with 2 internet connections wired and wifi to combine them on their servers to get a faster connection and then connect to what you'...
0
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1answer
78 views

Cisco IPsec VPN tunnel problem

I have a problem with VPN configuration. This is the topology I created: First updated licenses to make the VPN available: license boot module c1900 technology-package securityk9 IPsec Router ...
2
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1answer
67 views

MPLS-BGP - VPN isolation - RFC 4364

In Section 6 of RFC-4364, it is stated that, if MPLS is being used as the tunneling technology (in the scope of forwarding VPN-IPV4 traffic from one PE to an other) , this means that a router in the ...
0
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1answer
21 views

What is a child tunnel? [closed]

I only heard this term today, but it was explained to me as a point-to-point VPN (so, two routers with a VPN tunnel established between them) and a firewall configured to only allow certain hosts to ...
0
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0answers
52 views

Editing a crypto map with multiple entries

We're attempting to bring up an IPSEC tunnel with a Vendor. An engineer created the crypto map and wasnt able to establish a connection. I edited the entry to change the diffie-hillman group and the ...
0
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1answer
48 views

Easiest setup to replace jumpbox forwarding [closed]

In order to connect to some of machines, what I currently do is: Connect to VPN (using AnyConnect) SSH to my jumpbox via VPN For every single machine that I want to access using ssh, I have to map ...
1
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1answer
55 views

Is a VPN just a proxy which encryts data to the vpn server?

I have trouble understanding the concept of a VPN in contrast to a proxy. Is it true, that the VPN just encrypts the data which is send from the client to the vpn server and "rest" behaves ...
1
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1answer
58 views

Site to site ASA Routing question

I am doing a lab about DMVPN and Site to Site ASA integration. There is no problem in the DMVPN. However I have problem in establishing route from Site to Site ASA to DMVPN. The router on the left is ...
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0answers
37 views

Windows L2TP VPN issues when accessing Site to Site VPN on Cisco 5506

We have two Site to Site VPNs and Remote Access VPN configured. Using the builtin IPsec client on OSX all subnets are accessible however when using L2TP built in client on Windows 10 ICMP traffic ...
0
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1answer
53 views

client <--> server <--> client VPN?

I have the following use case for which I need to figure out a VPN solution. 100+ remote locations Each remote location has several users that should be able to connect to only that remote location ...
0
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1answer
73 views

What is method to switch group-policy on a tunnel-group upon user login?

We have ASA units that have tunnel-groups that have a particular group-policy defined via default-group-policy statement. This initial group-policy ("NOACCESS") is one that prevents any ...
1
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1answer
79 views

what is significance and role and function lifetime in IPSEC Site to Site VPN . Please explain importance and role of lifetime in VPN

I Came across incident where i need to troubleshoot IPSEC Site to Site connectivity issue . The term "lifetime" confuses me . please anyone explain me importance of lifetime in VPN . Whats ...
0
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1answer
61 views

What can I use to display VPN instance instead of stelnet?

How can ı connect VPN service with use ssh in Huawei Atn980c ? Which command? I researched but i didnt different command. I found only this command; stelnet x.x.x.x (VPN instance) (service name) (port ...
1
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1answer
153 views

Confusion about Route based IPSEC site-site vpn and policy based IPSEC site-site VPN

I am confused about the major difference between a policy-based VPN and routed-based site-site Vpn
1
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1answer
182 views

Juniper QFX Site to Site VPN

Im trying to setup a site to site vpn between two Juniper QFX5110's. Each end of the link is on the same subnet (so directly connected switches over dark fibre). I have configured each physical ...

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