PortForward | minimal port forwarding utility that uses Epoll | TCP library
kandi X-RAY | PortForward Summary
kandi X-RAY | PortForward Summary
PFWD is a minimal port forwarding utility that uses Epoll and Threading to forward requests from multiple clients on to a protected/hidden server.
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QUESTION
I have a Windows 10 PC with SQL Server Express, I have setup remote connections, allocated a fixed port (express, 22172, removed TCP Dynamic Ports under IPALL), set an inbound rule for the port etc.
I can connect and manipulate the database from a Linux PC on the same network (on the same LAN router), using:
...ANSWER
Answered 2021-Dec-14 at 12:29From your work, I suppose you set it all on the Win PC. So,...
- What about the Linux machine? Does it allow to do outbound connections to 192.168.1.22?
- Tak a look at the
SqlConnectionStringBuilder.IntegratedSecurity
. It should have a bool value.false
if user and password should be used for the authentication (https://docs.microsoft.com/en-us/dotnet/api/system.data.sqlclient.sqlconnectionstringbuilder.integratedsecurity?view=dotnet-plat-ext-6.0). - Tak a look at the
SqlConnectionStringBuilder.UserID
. It is missing in both of your code snippets. But mentioned at created connection stringsPersist Security Info=True;User ID=sa;Password=;
as «User ID», «user» и «uid». Please, see here (https://docs.microsoft.com/en-us/dotnet/api/system.data.sqlclient.sqlconnectionstringbuilder.userid?view=dotnet-plat-ext-6.0).
QUESTION
In one of our customer's kubernetes cluster(v1.16.8 with kubeadm) RBAC does not work at all. We creating a ServiceAccount, read-only ClusterRole and ClusterRoleBinding with the following yamls but when we login trough dashboard or kubectl user can almost do anything in the cluster. What can cause this problem?
...ANSWER
Answered 2022-Jan-07 at 08:45What you have defined is only control the service account. Here's a tested spec; create a yaml file with:
QUESTION
I run a bunch of alt/bot accounts on my server and I'm trying to make a command that gets all the (online)players IP addresses and if it matches mine, then it adds them to a player list to print to whoever executed the command. Here's what I have so far.
...ANSWER
Answered 2021-Nov-29 at 19:37You just have to check player IP between you and others. Values between Adress/Host address change a lot, specially between spigot/bungee.
So, I suggest you to use code like this one :
QUESTION
I am trying to set up a program where the server can communicate with multiple clients. The program is written in Java. I got it all working on the same machine so I decided to try LAN. I converted the program to JAR files and I tried connecting my laptop to my PC (both are on the same network). The connection is successful but unfortunately only 1 message arrives to the server. As you can see in the code below, I send multiple messages (Meaning that i write multiple times) via DataOutputStream
. One defines the datatype (in the following example 0 means that it's a String) and the other sends the actual message data. I also print the size of the packets in bytes and it always matches the size of the DataOutputStream
instance.
ANSWER
Answered 2021-Nov-27 at 12:21The issue is now solved, and the solution is quite logical. My client does not operate in a loop, rather it sends the data and closes the program. That sounds fine, but I forgot to properly close the socket of the client.
The reason why the second 'packet' never arrived was due to me doing this tiny mistake. The packet was on it's way through the local network but the client socket improperly closed it's socket before the packet arrived to the server, which is why I got a SocketException error. See this.
I solved the issue by putting socket.close()
,where socket
is the client's socket, after I had sent all the messages I wanted to send.
QUESTION
How can I make Skaffold
forward privileged/protected/special ports which have numbers below 1024
? In my skaffold.yaml
I added:
ANSWER
Answered 2021-Aug-05 at 15:42This should work. We changed Skaffold's behaviour to prevent it from allocating system ports (≤ 1024), but user-defined port-forwards with explicit localPort
s will still be honoured.
You didn't say what ports you were seeing being allocated, but I suspect they were ports 4503–4533, in which you're hitting a bug (#6312). This bug is now fixed and will be in the next release. You can also use the "bleeding-edge" build which is built from HEAD: the installation instructions have details for where to fetch these pre-built binaries.
QUESTION
Following the documentation I try to setup the Seldon-Core quick-start https://docs.seldon.io/projects/seldon-core/en/v1.11.1/workflow/github-readme.html
I don't have LoadBalancer so I would like to use port-fowarding for accessing to the service.
I run the following script for setup the system:
...ANSWER
Answered 2021-Oct-13 at 10:50If you install with istio enabled you also need to install the istio gateway.
I've tested your flow and it didn't work, and then did work after installing the following istio gateway.
QUESTION
We have two GKE private clusters, where access is only possible via ssh proxy.
In the local environment this works this way:
Open a ssh connection with port 8888 forwarding to the bastion host
gcloud compute ssh dev-cluster-bastion --project client-dev --zone xxxx -- -L 8888:127.0.0.1:8888
In another session
HTTPS_PROXY=localhost:8888 kubectl get pods
This returns the list of the running pods.
When we do this inside a bitbucket pipeline, then the ssh connects, but then closes and the kubectl
call fails.
The message from the ssh connection is:
Pseudo-terminal will not be allocated because stdin is not a terminal
So the portforwarding is closed too.
Adding -fN
to the ssh start does not help, the port forwarding is not working.
gcloud compute ssh dev-cluster-bastion --project client-dev --zone xxxx -- -fN -L 8888:127.0.0.1:8888
ssh then tells me client_loop: send disconnect: Connection reset by peer
Any ideas how to open the port 8888 tcp tunnel inside a bitbucket pipeline, so we can send the kubectl commands to the cluster?
...ANSWER
Answered 2021-Sep-30 at 16:02To fix this error Pseudo-terminal will not be allocated because stdin is not a terminal. follow one of the below steps:
The error occurred because you're running SSH with a single -t option, when the standard input to the SSH process isn't a TTY. SSH prints that message specifically in this case A single -t is equivalent to "RequestTTY yes", while two of them is equivalent to "RequestTTY force".
If you want your remote command(s) to run with a TTY, then specify -t twice. If you are doing so then in your command instead of -t use -t -t or use -tt .
To fix this error client_loop: send disconnect: Connection reset by peer follow the below steps:
You shall look on these parameters on the client
side /etc/ssh/ssh_config
ServerAliveInterval
ServerAliveCountMax
To set the interval to the value 60 and try
ServerAliveInterval 60
QUESTION
is there a way to create a topic permission for a user with the cli tool rabbitmqadmin on a remote system?
Using the Bitnami Helm Chart https://github.com/bitnami/charts/tree/master/bitnami/rabbitmq
Will use it for scripting so the Web UI is not an option Found there is Method for the other CLI Tool rabbitmqctl can not connect via rabbitmqctl to my cluster even I have a kubernetes Service + Portforwarding for port 4369
I already created a User + host permissions via rabbitmqadmin So the rabbitmqadmin cli tool itself is working in general
...ANSWER
Answered 2021-Sep-28 at 19:39You have to use the command rabbitmqctl
QUESTION
I'm trying to understand why this particular socat
command isn't working in my case where I run it in a IPv6 only Kubernetes cluster.
Cluster is build on top of AWS with Calico CNI & containerd. Provisioned using kubeadm
and Kubernetes 1.21.
I have run the following socat
command which binds to loopback interface ::1
,
ANSWER
Answered 2021-Sep-22 at 00:03For those of you running into a similar issue with your IPv6 only Kubernetes clusters heres what I have investigated found so far.
Background: It seems that this is a generic issue relating to IPv6 and CRI.
I was running containerd
in my setup and containerd
versions 1.5.0
-1.5.2
added two PRs (don't use socat for port forwarding and use happy-eyeballs for port-forwarding) which fixed a number of issues in IPv6 port-forwarding.
Potential fix: Further to pulling in containerd
version 1.5.2
(as part of Ubuntu 20.04 LTS) I was also getting the error IPv4: dial tcp4 127.0.0.1:15021: connect: connection refused IPv6 dial tcp6: address localhost: no suitable address found
when port-forwarding. This is caused by a DNS issue when resolving localhost
. Hence I added localhost
to resolve as ::1
in the host machine with the following command.
QUESTION
I have following network situation: Router 192.168.1.1 (portforwarding 80 to 192.168.1.20 Raspberry) Raspberry 192.168.1.20 with nginx running. Synology NAS 192.168.1.10 with "synology drive" service running.
On the Raspberry 192.168.1.20 nginx conf file I have a redirection for the subfolder /drive. Because I want to redirect to the Synology NAS to be able to use the "synology drive" service.
Therefore I've created following entry on the Raspberry nginx server in the conf file:
...ANSWER
Answered 2021-Sep-11 at 00:44You need to use the proxy_pass directive
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