Does GCP interconnect service support IPv6 addresses? Does google support IPv6? I have try to use interconnect with IPv6 addresses.
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I'm using openvswitch ovs bridge in my network to connect my 3 VMs to the network, and have the following constraints,
Static IP should be configured to the ovs bridge.
VMs should be in the same subnet as like bridge (but IP should be assigned within the 192.168.1.0/28 subnet).
What is the DHCP configuration to be mentioned for ovs-bridge. The figure depicts the scenario.
I have created a VM on Hyper-V with 2 Network Adapters.
NAT switch for static ip
External Switch (for access internet)
From my command line I was able to connect to the VM with the Nat Switch IP
but from WSL Bash I was not able to connect with IP NatSwitch, but able to connect with ExternalSwitch IP.
Why?
Unfortunately this is the expected behavior. (As of 29/01/2021)
WSL2 uses Hyper-V Virtual Switch, vEthernet (WSL) virtual network adapter, that is providing internal type Hyper-V network that is only accessible from the VM and the Host. The Hyper-V machine has a different virtual network adapter e.g. vEthernet (Default Switch). If that is set to internal that is a different NAT-ed network (subnet) not connected to the WSL one. It is like the Host having 3 NICs and one cable (Cable 1) going to WSL on a subnet that only exists on that adapter/cable and another cable (Cable2) going to Hyper-V guest with a very different subnet on that NIC.
On the other scenario the Hyper-V guest shares the subnet with the Host machine ("Same subnet as the 3rd cable/NIC.") so it is routed back to the VM. See red labels.
There is a workaround in this GitHub issue using port forwarding to Guest VM from WSL.
I have a java program that uses SQL queries. The goal is to send them from my home PC to a workstation on a different network elsewhere.
The SQL server is on Windows Server and I opened port 1433 for inbound connections. From that computer, I can successfully ping the port. However, I can't ping the port from the public ip address, only the local (192.168...), so it doesn't work if I were to try to ping it from my home computer.
Is there a way that I can ping it from my home computer? If so, how would I specify the address for JDBC?
Thanks!
It sounds like your Windows Server is behind an internet gateway/router. You need to configure the gateway to allow and forward inbound connections to TCP port 1433 to the IP of the computer that has SQL Server installed.
Here are some guides that explain how to enable port forwarding on different devices:
How to Forward Ports on Your Router (lifewire.com)
How to Port Forward (No-IP.com)
Also, note that we can ping IP addresses, not ports.
Device: Raspberry Pi 2 Model B
OS: Raspbian Stretch ( no desktop ) with static ip
Router: Belkin F9K1103
DNS service: Hosting on Norwegian version of domainnameshop.com
Greetings. I'm in the process of setting up my Pi as a server. The current motive is to be able to ssh into the device from another network and host a Git server on it.
It works great at home using the local ip address, but when it comes to port forwarding port 22, NOTHING works... I've tried for at least 10 hours combined, scavenging the internet for solutions on this topic, rasbian / raspberry related port forwarding or general. Nothing seems to work. I've tried everything it seems, and no matter what i do the tests show that the port is CLOSED.
I'm currently port forwarding the Pi's local ip and port 22 on the networks port 22 ( also tried port 3322 to the pi's port 22 ) on BOTH the router and the modem using the internet provider's own service for port forwarding online ( Telenor ). The Pi is connected with an ethernet cable, and I've tried connecting it to both the router and the modem when doing all the tests. I've also tried to add 'Port 22' and 'Port 3322' in the Pi's SSH configuration file.
I've also tried to use a DNS service in which I'm forwarding my home network's ip address but still no luck.
Can anybody please help me before I go insane? I'm I missing something crucial? I can't count on both my hands how many forum posts I've been reading and guides on both raspberry or general port forwarding..
Ok so I found out what was wrong.
Our modem is quite new and advanced, and the internet provider has their own online admin panel for it with its own port forwarding solution and what not. So this was apparently a case of classic double NAT conflict. The router tries to port forward to the modem which would normally just bridge that onto the web, but the modem is in a sense being port forwarded too by the internet provider and it's own services.
What I had to do was reverting the static IP configs on the Pi, unplug it from the wifi router, then plug it directly to the modem and then port forward it using our internet providers online admin panel for the modem.
Now it works brilliantly.
I have two real machines.
One is responsible for NAT and IP redirect called NC2 and another is responsible for eucalyptus KVM established 3 virtual machine.
No doubt, the OS of machine which is responsible for eucalyptus is Linux.
The guest OS of virtual machines are Windows XP.
Each virtual machine is a web server which runs Tomcat
NC2 gives an private IP 192.168.0.3 to Linux server.
Linux server gives 3 IPs which are private class B to virtual machines.
For example, one of guest OS gained IP 172.16.1.5
Now I use NC2 to redirect a physical IP x.x.x.x to 172.16.1.5
Here is my problem:
I can use other PC ,outer IP, connect to the website which is established on 172.16.1.5 with IP x.x.x.x, but I can't use machine with IP 172.16.1.5 to connect to it's own website.
I turned off the firewall on 172.16.1.5, and it's able to connect to internet such as yahoo or amazon. But it just can't use x.x.x.x to connect to it's own website.
I tested other guest OS which are gained 172.16.x.x also not able to connect to x.x.x.x.
How can I do to make guest OS connect it's redirected physical address?
It look likes this is caused by a NAT issue called 'hairpin'. Here is the explanation:
Let machine A on a LAN have a private IP address 192.168.0.10.
Let NAT N translate A's private IP to public 77.33.45.67 for the WAN.
Some 'early/old' NATs take for granted that the translated address in only going to be used from the WAN. Therefore, they don't forward packets on the LAN having ip address = 77.33.45.67 and only let in and forward those with this ip address when they come from the WAN.
This problem is solved in more recent NATs which detect these situations and forward packets properly. This problem is sometime encountered in P2P systems.
If you are lucky, your NAT be may be reconfigured to enable usage of translated address on the LAN. If not, then you need a new NAT.