Networking – Multiple VPN connection for VPN Gateway

All PCs in the LAN are currently connected to the Internet via a single VPN connection:

                                                                                + ------ +
Devices + ---------> | TUN0 | + -----> ISP ROUTER
+ ------ +

Now I have to connect the devices via a 2 VPN connection to the Internet. some of them connect via tun0, others via tun1.

                                                                                + ------ +
Device 1 + --------> | TUN0 |
| + ------> ISP ROUTER
Device 2 + --------> | TUN1 |
+ ------ +

How can I do that?

Networking – Connect two VMs on two different physical machines to their own network

Right now I have a setup on the left: two physical machines connected by a router, each with its own VirtualBox VM. You have bypassed adapters so that they appear on the network. Everyone sees everyone.

Network setups

I want to reach the setup on the right. The physical machines remain unchanged, but the VMs are connected in their own network, regardless of the router (I think it just has to behave like a switch) and not accessible from the physical machines. How does it work?

I could not find anything on this topic. It is possible that I do not know the right words. Or is it impossible? I apologize in advance if I have just shown my ignorance in the subject, but I would really like to learn something.

Wireless Networking – How can I limit the number of users who can connect to a Windows Access Point through netsh?

I have a wireless dongle with the RTL8188EUS chipset. I use it to create an access point from a Windows 7 computer. However, I have found that the dongle shuts off when 12 or more people are connected to it and I need to restart the computer Hosted network,

When I do

netsh wlan show hostednetwork

it turns out that the maximum number of customers is 100.

Mode: Allowed
SSID name: "Name"
Maximum number of customers: 100
Authentication: WPA2-Personal
Numeral: CCMP

Is there a way to match this number with the netsh Command, does it require extra work?

Thanks for the answer.

Networking – Host Discovery in AWS VPC

I have only one basic question. What is recommended for automatic host detection in an AWS VPC? I have run these servers and would like to find a proper way to configure the / etc / hosts file on each machine so that they can talk to each other. I know that I can enable DNS support for my VPC. However, this does not resolve hostnames generated by the software I am using.

I'm building a RabbitMQ (with Autocluster plugin) high availability cluster with autoscaling groups with startup configurations, but no clusters are formed, unless I add all the hosts to the hosts file, z -xxx-xxx I would need the resolution "Private IP "and the host name" ip-xxx-xxx-xxx-xxx ".

Networking – strange network behavior

I have the following problem:

In my company, we have our own subnet for our department, which is structured as follows:

Enterprise router — ipfire — [NAS (which handels DHCP), Storage Server, …]

The hardware on which ipfire is installed is faulty. Also, ipfire does not start properly.

So I set up a new computer with the latest version of ipfire and configured it with my predecessor's data:
(red: IP, netmask, gateway, green IP, netmask)

I also tried it with a TP-Link router with the same configuration (except: enabled DHCP and directly connected test device …)
and a laptop with appropriate configuration attached to the network dose connected to the enterprise router.

Each description method produces the same result:
You can access services and reach other devices on the corporate network (ping, traceroute, …).
However, you can not reach anything other than the corporate router (for example, ping

At first, I thought there was MAC address filtering, so I checked the hardware-based MAC address from the old ipfire's red interface
-> would not work.
After that, I was able to recover some of the damaged data from the old ipfire installation and see if they had changed the Mac-based software
(/ etc / network / interfaces) but nothing has changed …

Now I'm a bit unaware of how to proceed in this case …
I hope you can bring some light in this case.

Feel free to ask if you need more configuration information, etc.

Before the "collapse" of ipfire last week everything worked perfectly …

Networking – Routing of IP with route ADD Windows command and 2 networks

I have 2 networks

NETWORK 1 defined by to 254 (Gateway)

NETWORK 2 defined by to 254 (Gateway DLINK routeur)

One of my PCs is in NETWORK 2 with the static IP address

The DLink Router is also in NETWORK 1 with a static IP address:

My PC is in NETWORK 1 with the IP address

I tried to define a route on my PC

route add MASK -p

My PC on NETWORK 1, however, can not ping on NETWORK 2

My track pressure is

IPv4 routing table

================================================== ===========================

Itinéraires Active:

Destination réseau Masque réseau Adr. Passerelle Adr. Interface Métrique

               35 On the connection 331 On-Link 331 On-Link 331 On-Link 291 On-Link 291 On-Link 291 37 On-Link 331 On-Link 291 On-Link 331 On-Link 291

================================================== ===========================

Do you have any idea? Thank you in advance !! greetings

Networking trunk between SG200 does not seem to send tagged traffic (n00b)

I have connected a Cisco SG200-26FP (switch A) to a Cisco SG200-26P (switch B). I want to use the existing connection between both switches as a trunk, so 2 VLANs can use that connection, but I'm having some trouble. As an additional hurdle, these devices do not allow connections through the CLI, so it's just the GUI, I'm afraid …

Configuration switch A:
GE13: Connection to Switch B: Trunk: VLAN10 Not marked, VLAN50 Tagged
GE14: Access: VLAN50 without tag
GE22: Connection to the router: General: VLAN10 Without Tag, VLAN50-Tagged, VLAN51-Tagged

Configuration switch B:
GE20: Access: VLAN50 without tag
GE26: Connection to Switch A: Trunk: VLAN10 Without Tag, VLAN50 Tagged

I do not understand the following: At switch A, I can hang a device to port GE14 and he gets an IP address from the DHCP server to VLAN50, he will see the gateway, etc. With Switch B: Port GE20 not however You do not receive IP from the DHCP server. I can not understand why and I feel that I miss something obvious here.

Both switches contain at least one other VLAN (separate), everything is fine. There are no problems with VLAN10 either.

Any help is greatly appreciated. I will add a few screenshots:

If you need more information or screenshots, please let me know.

Thank you in advance for your help!

Networking – Ip-Link has always been redirected to Localhost

Whenever I try to insert, I have always redirected to localhost, but I can access the litter domain. Why is this happening?
On the IP I get a website unavailable. What's wrong with my Ubuntu? How can I fix this?

/ etc / hosts localhost # localhost.localdomain asylzat-desktop localhost.localdomain

# The following lines are desirable for IPv6-enabled hosts
:: 1 ip6-localhost ip6-loopback
fe00 :: 0 ip6-localnet
ff00 :: 0 ip6-mcastprefix
ff02 :: 1 ip6-allnodes
ff02 :: 2 ip6-allrouter

/ etc / network / interfaces

# interface file (5) file used by ifup (8) and ifdown (8)
car lo
iface lo inet loopback

Networking – which means 35401 in the SOCKS proxy: 35401

I get the proxy configuration as:

Proxy all traffic
HTTP (S) Proxy: 32819
SOCKS proxy: 35401

I have the idea that is the local host. This simply means …. in Ipv 6

What do the 32819 and 35401 mean?

it's hard to find a pattern

>>> am (32819)
& # 39; # 39 & 0b1000000000110011;
>>> Dustbin (35401)
& # 39; # 39 & 0b1000101001001001;

I read the story about SSH port 22.
32819 and 35401 seem to be completely random.