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13 views

How to find a network specialist? Any professional associations (like IEEE)? [on hold]

We may need to hire a specialist to test the physical integrity of our network with Fluke network device. This is a rare need for us, I am trying to find some starting point. Is there some ...
0
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0answers
10 views

DHCP Server not sending ACK packet [on hold]

Situation: Client machine can't connect to WiFi at a location that is using an Aruba 303H Remote Access Point. If he has a wired connection to the RAP he receives an address through DHCP just fine. ...
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0answers
15 views

How to analyze packet monitor export from Dell SonicWall?

I have four export options: -Libcap -Html -Text -App Data I can obviously read the Html and Text data, but they are formatted horribly for being able to slice and dice in Excel or, preferably, for ...
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0answers
9 views

How to configure a server running on MS Windows to route an IP via intranet/internet dynamically? [on hold]

I apologize if the title might be incorrect. The crux of the problem is: 1. I have an application that runs on client machines throughout a hospital and can even be used remotely by doctors. 2. This ...
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0answers
14 views

Public IP address assigned instead of DHCP ip range address [on hold]

I'm using a second router to connect to my main router to create a new wireless SSID. Here's my current setup: First router/main router - Generic branded router is provided by ISP and connected to ...
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0answers
19 views

pfsense DHCPv6 relay for LAN clients [on hold]

I am trying to get clients on the LAN side of my pfsense firewall to get IPv6 addresses from the DHCPv6 server on my cable modem. The cable modem has an IPv6 address and all devices on the same ...
0
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0answers
19 views

Purpose of using only White/Blue & Blue pins from Cat Cable? [on hold]

My job recently had a Comcast install guy come out and I saw this in the back of the router. What’s the purpose of using just the 2 pins? And would it be ineffective or do damage if the other pins ...
0
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0answers
14 views

Networking and IP address [duplicate]

If an Isp is allocated to equal ranges for 64 companies with address 130.192.0.0 what is the subnet mask, and host of the first and last company? If not being able to solve it..I’ve little knowledge ...
0
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0answers
10 views

Can we consider mobile signal strength as radiation level? [on hold]

I developed one Android project which is able to read mobile network information like Which gives mobile/wifi signal strength in dBm. Basically what I want to see is - Radiation generated from ...
0
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0answers
5 views

How can i configure Unbound to use Microsoft Virtual Adapter [on hold]

I need a light DNS and i found Unbound. It work fine with ethernet adapter, but i need that it work with WiFi adapter (resolve queries from wireless devices). I use a program to create a hotspot to ...
0
votes
1answer
21 views

Device on VLAN is accessible from VPN but not from LAN

I have a Meraki MX84 with two VLANs, 192.168.213.0/24 (main subnet), and 10.4.213.0/24. I have an EdgeRouter 12P connected to the MX with static WAN IP 10.4.213.2. The issue is: when I VPN into the MX ...
0
votes
1answer
21 views

how to get the smallest summary route? [duplicate]

i am practicing subnetting, then i got this question from the web. then the answer showed up as 172.16.0.0/12, i am puzzled right now how did that happen. please if anybody out there can explain to ...
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0answers
26 views

Why would i need 2 NICs and 2 Gateways and how? [on hold]

I manage several web servers in my institution and no one had any issue accessing to them until today. We got visitors from US to China, Russia to Africa and never had such complaint. These guys ...
2
votes
2answers
35 views

Arista VXLan with QinQ

I've got a weird situation. Three doctors offices are merging in two cities and we are planning on merging them into one building in each city. Due to politics and crappy software each office will ...
0
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0answers
43 views

How to check vlan interface traffic on Cisco nexus 9k

I have Cisco N9K-C9396PX L3 switch which has VLAN interface configured for my LAN gateway and i want to monitor how much traffic vlanXXX handling, I have configured SNMP monitoring to pull interface ...
0
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0answers
7 views

Logging .html and .js files for certain Domain [on hold]

In a local network I would like to save/log all files that any user requests and receives via http/https from a certain website. Say User A accesses https://www.google.com via our wifi or cable ...
0
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0answers
16 views

In which system, what type of change they did to support IPv6? [on hold]

Currently, we are using IPv6 addresses to communicate on the internet. To support IPv6 where networking giants made changes.
0
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0answers
9 views

“non-meraki vpn” to “non-meraki vpn” [on hold]

Will I be able to route one “non-meraki vpn” to one other “non-meraki vpn”? I have those 2 witch need to communicate with each other.
-1
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0answers
10 views

I am facing problem in telnet router using extented ACLs [on hold]

I am facing problem config telent router using Extended ACLs cmd means tha i permit 100 access-group in PC B with eq www but not telneting in PCB to ther server?? anyone can help?
0
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0answers
14 views

IKEv2, no authentication method exchanged in phase1

In IKEv1 packet exchanges we can see the authentication method (phase1) which can be PSK or certificates, but in IKEv2 i donot find the authentication method being used, how does iKEv2 calculate ...
0
votes
1answer
28 views

Unicast Adjacency Routes Nexus (AM) Cisco Nexus

I have an odd situation. There is static route on my Nexus 7700 that routes anything for specific subnet /24 to a F5 LTM Load Balancer, external VRRP interface 10.x.153.15. As you can see below, ...
0
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0answers
13 views

Dhcp authoritative problem [on hold]

I can't set the dhcp from non authoritative mode in authoritative mode,does anyone know how to do, since when I move a pc from one vlan to another, this keeps the address of the old vlan. I have ...
3
votes
2answers
114 views

Industrial Ethernet network design

looking for some advice on network architecture for an industrial switchroom with several constraints. Modbus TCP devices are located in motor control centre cells, these need to connect to the ...
0
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0answers
28 views

how is my ISP able to inject into this webpage? [on hold]

Lately I've noticed that pages I go to on http sometimes have a large banner at the top from my ISP. What's weird is when I refresh the pages I get the https version of the site and the banner is not ...
0
votes
0answers
9 views

How to manipulate packets for Adversarial Machine Learning in order to change network classification results? [on hold]

I am working on Adversarial Machine Learning. This means we have malicious input in order to get an inaccurate classification of the packet i.e. the packet will be classified with an incorrect label. ...
0
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0answers
12 views

Speed monitoring between a nas and a Mac [on hold]

I would like to install a speed monitoring between a NAS and a Mac because I have interruptions. I like to do this over one week, because it's not always the case. I'm thinking of Iperf, but I don't ...
0
votes
0answers
10 views

In depth analysis of jdsu readings [on hold]

I have had consistent issues with my internet, and a friend told me to get line readings from the tech. Can anyone give me a summary of the normal range each of these items should be : Noise Margin ...
0
votes
0answers
10 views

Free VPN tunnel software with various protocols [on hold]

I am seeking for FREE software to create VPN tunnel (l2tp, ipsec, sstp, etc.)
0
votes
0answers
31 views

Which routers do ISPs use to route data? [on hold]

I'm not entirely sure whether I should ask this question here (honestly this was the only place that came in mind) but I'll try nevertheless. I couldn't find a concise website which would explain me ...
0
votes
0answers
14 views

DIY WiFi ap antenna [on hold]

I'm looking for some help, i have the isp router inside of the living room and my laptop in my bedroom, the problem is that with the stock router antennas the wifi signal is very poor ant it doesn't ...
0
votes
0answers
12 views

Peer presented IP [on hold]

I have an requirement from client where they want me to send a request coming from 78.x.x.x over the Ipsec tunnel so that to their peer they see it coming from 78.x.x.x. On both sides we have ...
0
votes
0answers
18 views

Modbus URI scheme [on hold]

Is there a standardized URI scheme for the Modbus TCP protocol to access ressources? It seems to me that it does not exist, can somebody explain to me why not? I found a document, which uses the ...
0
votes
1answer
49 views

How to interpret subnet mask [duplicate]

I received a datasheet with which I need to configure a server that doesn't do dhcp but rather needs to use a static IP address. The sheet tells me to set the subnet mask 255.255.252/22. I tried to "...
0
votes
4answers
82 views

does fiber optic transmit data as fast as light?

I dont know where to ask this question. So i think its best suited for networking community. As fiber optic transmit data using light. So we are getting/sending data at the speed of light ?? I did ...
0
votes
0answers
44 views

Will VLAN agnostic devices listen to VLAN tagged packets?

I have a network that looks kind of like this: We have a shared physical network between guest and operations that I keep segregated by VLANs. My knee jerk was to keep all "operations" devices on ...
0
votes
0answers
22 views

VLAN2 cannot access internet HP layer 2 and layer 3 switch [on hold]

I have hp layer 3 switch and I have two vlans. First vlan1 is default vlan and all devices connected to this vlan1 can access the internet. Devices on vlan2 cannot access the internet. This is my ...
0
votes
0answers
3 views

My cloud ex2 ultra - Mount a network drive to the device [on hold]

Is there anyway to mount a network drive on this NAS box without manually modifying the /etc/fstab file As any custom configuration will void the warranty I want to mount another NAS onto the ex2 ...
0
votes
0answers
9 views

QEMU/KVM/libvirt macvtap VEPA not working - ARP request not forward [on hold]

Hi I've been struggling to get guest networking working when using a macvtap in VEPA mode between two VMs on a host. I've spent hours (days) googling with no joy. Does this network configuration ...
1
vote
1answer
37 views

Packet analyze on router does not match client and server

thank you for your time. My (virtual) network has 3 objects : a client, a server and a router between them. I'm sniffing the traffic on the 3 machine with the command tcpdump -i any -s 0 -w [path] ...
0
votes
0answers
15 views

Port forwarding / UPnP issues with media server software [on hold]

I am facing a bizarre issue where port forwarding on my home router works perfectly well for most applications, but specifically doesn't work for media server software I've tried it with (Plex and ...
0
votes
2answers
51 views

How does a Hub work when sending broadcast packages?

I know that hubs send broadcast packets, so every packets is received by each node in the broadcast domain. I read that frames that are received but that aren't addressed to a NIC'S MAC address are ...
0
votes
0answers
19 views

Configuration of OSPF in broadcast multiaccess networks [on hold]

I am trying to configure an OSPF network with various areas and the interesting bit is that the routers in the backbone area are connected by means of a switch, as shown in the figure below. The ...
2
votes
3answers
428 views

LACPDU packets to pass through unmanaged switch

I have two buildings connected through the CAT6 cable and both ends have cisco-sg350 (capable of etherchannel). Due to the limitations of the cable both the switches are connected through a unmanaged ...
0
votes
1answer
47 views

Is 1111::/64 a valid IPv6 address?

As per the rules for shortening IPV6 address given in https://networklessons.com/ipv6/shortening-ipv6-addresses, this IPV6 address is invalid. But still this address gets accepted when configuring a ...
0
votes
2answers
26 views

Is there any method for insert ssh key in putty when i need to connect cisco router?

I need to connect to cisco router and use private key to connect, but i need to use to putty for ssh. Is there any way?
0
votes
0answers
16 views

Very strange: Where in the network stack is linuxmint.com blocked system wide [on hold]

I am using windows. I can access it from a bridged VM on the same device with the same DNS configuration. It continues to be blocked even with third party upstream DNS providers and local revolvers, ...
0
votes
1answer
34 views

Cisco Zone Based Firewall

I have Cisco 891F configured with ZBF from CBAC. Right now, router is wide-open SSH/443 or anything my public address is listening on, which is not what I intended. My intention was to only allow IMCP ...
1
vote
0answers
37 views

Strange traceroute behavior when using iptables/nat to redirect an IP [closed]

A client of mine has a network 10.0.1.0/24 that has the following systems (among others): 10.0.1.254 Main router 10.0.1.4 Linux server 10.0.1.8 Windows server   The windows server ...
0
votes
0answers
12 views

Router for SmartTV [closed]

I wonder if I need special characteristics on router for connecting my SmartTV to the Internet by wi-fi. I've stumbled upon some reviews that suggest xiaomi routers cannot provide IPTV, and that ...
0
votes
1answer
37 views

Is there a recommended way of making Network Diagrams? [closed]

I am used to draw network diagram without following any particular template, norm or convention. Is there such a thing ? Something like a framework to represent physical and logical diagrams or both ...

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