Questions tagged [networking]

Networking refers to the technologies and techniques that enable the interconnection of devices and applications allowing them to communicate electronically.

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Server detected wrong IP address of clients

I found that my server detected wrong IP address of some clients request to it. For example , one of my client have IP address : 118.71.163.19 when connect to other server or checking on whatismyip's ...
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Not able to access internet in vmware. The ifconfig looks right

Not able to access internet in vmware. The ifconfig looks right ens33: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether 00:0c:29:bb:52:c3 txqueuelen 1000 (Ethernet) ...
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25 views

Intermittent connection failures to Kubernetes service on GKE

I've been trying to diagnose this issue for several days and have a pretty good picture what is happening, but still no idea why. The symptom is requests to different Services with failing TCP network ...
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44 views

Where does tcpdump get the source IP from for a TCP packet?

I've been trying to come up with a solution for a routing problem (multiple interfaces connected to a single Docker container, ensuring response packets go out the right interface), and have come ...
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How do you prevent a Windows Server 2019 network connection profile with no default gateway from reverting to “Public”

I am bringing up a new site and installing dual homed Windows 2019 RAS/Web servers. The interfaces on the DMZ must have a default gateway defined or they simply don't work. The "internal" ...
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Restrict access from aws workspace to specific domains

I have created an AWS workspace for a developer and would like to allow access only to certain sites. Eg: google.com, npmjs.com, stackoverflow.com, etc. AWS has security groups that I can use to ...
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15 views

How to make a machine which is hidden behind a VPN client (router) visible in the VPN serwer (router) LAN?

I am trying to set up a bi-directional communication between two home networks: On both sides I have ASUS routers with OpenVPN Client/Server functionality Router A has network 192.168.2.0/24, router ...
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1answer
73 views

Server not accessible from the internet despite everything

I don't have a static ip, so it changes sometimes, meaning I have to change things like port forwarding rules for my web server and SSH, etc. However this time, despite everything, it's not accessible ...
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22 views

Connecting Openwrt to a dumb modem [migrated]

my provider gave me a pretty dumb modem which is not capable of modifying a lot. The wifi is also bad. So I decided to buy another Router and flashed Openwrt. Unfortunately, I cannot replace my modem ...
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1answer
25 views

Openvpn site-to-site: cannot access remote network, remote network can access local

I have poured over so many suggestions and spent so many hours (upon hours) on this and simply cannot come up with why a specific vpn connection is only one-sided. I have a centos aws ec2 server (...
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28 views

OpenVPN , internet browsing using distant IP?

I'm using OpenVPN to access one of our subsidiaries local apps and network.. i was wondering if it would be possible to browse internet using the distant network public ip ? my computer (public ip : 1....
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BigBlueButton getting unusaul traffic

We are running a bare-metal server which can handle 400 concurrent video conferencing users. We are using BigBlueButton application for video conferencing. It was running smoothly for the past 6 ...
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15 views

TFTP Server working, PXE Boot is not

We have set up a TFTP server in Debian and want to set up a PXE boot server. Currently the problem is that while we can retrieve files using TFTP, the PXE boot agent can not retrieve the file. ...
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26 views

Identify cat5 and cat5e wiring visually

I have some network cabling running in the house. I wanted to know if they are cat5 or Cat5e. Unfortunately I don't have access to the part of the wire where it's written. Mainly I want to run gigabit ...
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21 views

What is the proper way to attach a virtual bridge to an already existing KVM guest?

I have this bridge virbr0 tuned with eth0 in my host, and an already running KVM Guest with multiple nics installed on it. The goal is to make the KVM guest reachable from outside the host, this is ...

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