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Questions tagged [network]

For questions about Networking that includes design, and use of a network, the physical cabling, hub, bridge, switch, router, and so forth. Anything in relation to networking and its technologies.

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11 views

Using SMTP in an application [on hold]

I need to allow users to send emails from my application back to me. The problem is some users live at different locations and I believe this will trigger a security error when sending the emails (e.g....
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1answer
47 views

WAN/Campus network design - Learning purposes

I am trying to build a WAN connecting various LAN's via frame-relay for learning purposes, i do not have that much experience with frame-relay or network design (mainly creating LAN's and connecting ...
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0answers
16 views

Windows machine to interrupt or confuse another machine [on hold]

I am looking for a way to block or make playing Fornite goes very unplayable since kids are wasting to much time on this game. I have a very basic router so I need a way to jam such service or game ...
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0answers
18 views

2 physical interfaces change the link to a different interface name, on reboot [on hold]

Environment: I have two physical network interfaces on my system: Qualcomm Atheros Ethernet Realtek Ethernet (RTL-8169) on which i have installed Ubuntu-18.04. Problem: I have configured: ...
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0answers
9 views

How to calculate network address, ip address and broadcast based on subnet [duplicate]

I have class B network address: 172.16.0.0/16 So the subnet mask for this address is 255.255.0.0 I need to calculate / write down network adresses, host adresses and broadcast addresess for 12 subnets....
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1answer
27 views

How does a router forward datagrams from the internet to an interface of a private network?

As I have seen in How does a router know to which PC in a network to send a response from a server? if I haven't misunderstood it, if an interface in a private network sends a Datagram to the outside ...
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0answers
15 views

Can't Seem to Resolve Static DNS Issue [on hold]

I am statically configuring IP address, subnet mask, default gateway and primary and secondary DNS servers on my host, which is a Windows 10 PC. Everything is working perfectly except the DNS ...
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0answers
18 views

What is the meaning of <insert your networking term here>? [migrated]

A lot of students (and others) ask questions on this site regarding the meaning of many networking terms. Some ask for simple definitions, while others want to know if a term applies in a particular ...
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0answers
16 views

What is sthe difference between acoustic photon and acoustic phonon ? [on hold]

In the book Biomedical Photonics Handbook, 3 Volume Set edited by Tuan Vo-Dinh, it is written : Brillouin Scattering is caused by the interaction of the photon with the acoustic phonon. As the result ...
3
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1answer
29 views

what is pump conversion efficiency?

I am reading an article about Optical Fiber amplifier and i saw the term pump conversion efficiency. Do you know what this mean ? I have seen on the internet that energy conversion efficiency is the ...
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0answers
10 views

How do I do traceroute/tracepath without any admin privileges? [on hold]

Redirect me to the right place if this is not the place for this question, but I need to do something like traceroute/tracepath/tracert, but I have no admin privileges and I do not have these ...
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0answers
26 views

how can i locate location a far away Hotspot that isn't connected to internet? [closed]

hello every one the reason of this question is i want to use an app that turns the Mobile Hotspot on when the sim card get's removed !!!! in a useful way/ to help getting the phone back after ...
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0answers
14 views

Add ports on Packet Tracer 7

how do you create new ports using WMIC-4ESW on my routers on packet tracer 7? both of my routers have 2 GigaEthernet and I used them because my 2 networks on each router. I need to be able to add more ...
1
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1answer
19 views

Quanta switch not resolving addresses

I've got this brand new Quanta T3048. I've configured the VLANs we need but it came to my attention that the switch won't resolve any address even though I've set it (according to the configuration ...
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0answers
14 views

How to connect IP network to outbuilding [closed]

At my lakehome I have a great Internet connection with both wired and wireless devices. And I also have a garage some distance from the house that I want to build an office into with a wired ...
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0answers
12 views

Are there Opensource Bandwidth allocation software? [closed]

Are there any free or cheap software that would allow a network administrator allocate and possible sell Wi-Fi bandwidth to students on campus?
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0answers
9 views

Mobile Network Connection Sharing [closed]

Trying to understand the nuances of mobile network connection sharing. If I have a mobile device (e.g an Android Pixel) connected to a 4G network and I have 20 http requests to make simultaneously ...
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0answers
9 views

Make docker containers visible via host network [closed]

hey guys I have a docker container A with a domain name attached to it on a host B with a domain name attached to it as well.....how can I access the said container A via A's domain name rather than ...
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0answers
13 views

Playing Online Games and Downloading At the same time in background [closed]

There is always a time in our life when we need to download something urgently and also wanna play some online games without any ping issues at all, So I was thinking is there a multi-channel kind of ...
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0answers
13 views

Why the port is open using `tcping` to detect? [closed]

Why the port is open using tcping to detect? I created a gateway in router, and such as, its IP is 100.100.158.254, when use tcping to detect it, there shows its 80 port is open. why ? because I ...
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0answers
9 views

How to setup Internet access in Netkit for the virtual machine? [closed]

My host real machine (Ubuntu 18.04) is connected to our home router by Wi-Fi. I need to have Internet access in the virtual machine too so I set the next configuration for my virtual router in Netkit: ...
2
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1answer
41 views

Routing and Switching & network monitoring

hi i am facing problem in juniper switch Model: ex4200-48t ,Junos: 15.1R6.7 . i deploy network monitoring check-MK software. there is showing errors of juniper switch ports and also show in logs file ...
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1answer
71 views

Is there any video streaming online service that actually uses UDP?

We usually hear that UDP is used with data with which a few packets loss/out-of-order can be tolerated like video streaming. And the instructor typically goes on saying "so if you lose a few ...
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1answer
28 views

What is the difference between Active and passive queues? [closed]

Hi guys could you please help me. I want to understand the fundementals of Queuing but I am stuck on the difference between Active and passive queues. Firstly, what is an active queue? Secondly, what ...
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0answers
43 views

Networking(switching) , network traffic monitoring

Hi I am facing error in juniper switch( Model: ex4200-48t ,Junos: 15.1R6.7). I deploy monitoring software and in monitoring software are generating alarm(error) of juniper switch ports errors WARN ...
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1answer
29 views

Multiple Networks on Sonicwall with no access to cisco firewall

The issue im having is that i have 2 networks with 2 internet connections. We now all of a sudden have a POS system handling our network. This system blocks our email and a bunch of pages we use. They ...
1
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1answer
34 views

Inter Vlan on L3 switch

I do an inter-vlan L3 switch lab on Eve-ng emulator. The topology like below And this is output from some show command at the L3 switch: Building configuration... Current configuration : 1422 ...
2
votes
1answer
52 views

Spine Leaf L3 TOR DMZ Design for Virtual Environments

I have a question regarding DMZ design in our DC. Let me give you some background. We have 1 rack 2 Spines 2 leafs L3 TOR connected to each spine ESXI hosts connected to the leafs 1 Palo ALto ...
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0answers
36 views

Simulating TCP/IP Illustrated Test Network [closed]

I just recently bought TCP/IP Illustrated volume 1 first edition for cheap and I see that they reference a test network throughout the book that looks like the following Now I'm not the sharpest tool ...
-1
votes
0answers
14 views

I need to ip address 10.2.34.1 /20 into 8 subnet with the same size (subnet 0,1,2,3,4,5,6,7) [duplicate]

This is a my questions.. and i should make a report about this questions .. please help me anyone IP address : 10.2.34.1 /20 this ip address should be divide range into 8 subnet with the same size (...
0
votes
1answer
21 views

Ping and tracert command result [closed]

Here i have the response when i use commands ping and tracert for google.com Now, i am still new to networking, but i need to know how to interpret the response that i got here: 1) First off, i need ...
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0answers
26 views

Is there any method for checking Router with Server network speed?

I have a Server that have a low network speed. I want to find the crux of the problem of low speed. I want to test the Server between its Router's network speed. So, is there any way for doing ...
4
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2answers
63 views

Whether we usual use dot-decimal notation to represent network or IP by opposite mask?

Whether we usual use dot-decimal notation to represent network or IP by opposite mask? 10.10.10.0 0.0.0.255 # a network 10.10.10.0 255.255.255.0 # a IP Update if we represent a network, we can use ...
1
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1answer
42 views

Why RIP announce network does not need the mask?

The below is the RIP protocol's declaring the routing command: Router(config)#router rip Router(config-router)#version 2 Router(config-router)#network 1.1.1.1 Router(config-router)#network 192.168....
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2answers
43 views

Explanation of traceroute

Can anyone help me to explain the results of this traceroute. Why on hop 2 will latency suddenly increase? and decreases at hop 3 and will rise significantly to hop to 8.
4
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3answers
2k views

What does the “T” shape mean in network topology?

What does the "T" shape mean here? There is a logogram, but I want to know the RTA's left side port whether is config the 192.168.1.0/24 network segment's IP address. This is Quidway technology.
5
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3answers
430 views

Need help understanding how packets travel across the internet

I've been learning about networks recently at a new job, and I did a presentation on what I've learnt so far. When I was describing the relationship between the datalink and network layer, I mentioned ...
0
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1answer
33 views

Linux network bonding/teaming

I have two linux servers with two NICs each and two unmanaged switches. This is my preferred design: Server A - eth0 -> Switch 1 Server A - eth1 -> Switch 2 Server B - eth0 -> Switch 1 ...
1
vote
1answer
25 views

Is the Backbone Area connected AS Area are through one router?

I am studying Networking, and I find the Area 0.0.0.1, Area 0.0.0.2 connect to the Backbone Area is through one path, is it means only through one router(or say not more)? we often hear that the ...
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votes
1answer
37 views

BroadBand to Ethernet converter [closed]

we will have PaloAlto Firewall to use it in our SOC network and the line that we have is 100M broadband Internet, please I need your help to find a solution to convert the available 100M broadband ...
0
votes
1answer
35 views

Routing an owned /24 IPv4 block to a single server [closed]

How would one go about routing a recently-purchased /24 block of IPv4's to a single server? The server is colocated in Zare.com, and the BGP session is already set up and announced.
5
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3answers
914 views

What is the characteristic of spoofed ARP packets?

Hi what is the characteristic of spoofed ARP packets? I want to know how to detect it but before that I have to know how can I call a packet a spoofed packet. I hope you can help me thank you.
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2answers
67 views

Do I need a Gateway if I try to Ping a Client in the same Network?

In NFX I'm trying to create - Devices in a Network with 2 Clients, which can communicate with each other. But it does not work, is it because I have not set a Gateway which can tell the Client, where ...
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2answers
107 views

How does DOCSIS relate to DVB-C

I'm new at telecommunications so this may be a simple question, but somehow I can't get my head around this. Can someone explain me in simple words how the terms DOCSIS and DVB-C are related? Both are ...
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2answers
71 views

Re-building an old network

I've been recently tasked with re-building an old computer network for a small enterprise that was always maintained very poorly. To give you an idea of a situation: A single router is connected to ...
2
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1answer
50 views

How a client behaves if same IP address is assigned to two different interfaces?

First of all, these questions are just out of curiosity. I don't have such configuration, I'm just wondering how a box would behave in such environment. Say we have a Linux box with two network ...
2
votes
2answers
71 views

Why can't I get a WiFi password by sending out the same SSID?

If I have two WiFi routers in different locations but with the same SSIDs and I connect a device to one of them, when I bring this device near the location of the other router, it will automatically ...
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vote
2answers
49 views

Why are the routes taken by packets random using LPM?

Consider the Longest Prefix Matching (LPM) mechanism that routers use to decide which data link the packet should be sent next. Assuming that the router tables don't change, shouldn't the path the ...
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votes
1answer
41 views

Network routing/WAN failover

Hi any one recommend me WAN Fail-over in Cisco 2811 router in virtual interfaces I already try this configuration. but its not working ip route 0.0.0.0 0.0.0.0 192.168.86.1 ip route 0.0.0.0 0.0.0....
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1answer
181 views

I want to ping from pc 192.168.1.2 to pc 192.168.2.2 but i am not able to do so. Can someone tell me my mistake

The network is able to ping from pc 192.168.1.2 to router interface 192.168.3.1.