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12 views

Speed monitoring between a nas and a Mac [closed]

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 [closed]

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 ...
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votes
0answers
11 views

Free VPN tunnel software with various protocols [closed]

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

Which routers do ISPs use to route data? [closed]

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 ...
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0answers
14 views

DIY WiFi ap antenna [closed]

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
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0answers
13 views

Peer presented IP [closed]

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 ...
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0answers
18 views

Modbus URI scheme [closed]

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
50 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
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4answers
86 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
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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
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0answers
24 views

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

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 ...
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0answers
3 views

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

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
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0answers
10 views

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

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
38 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
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0answers
15 views

Port forwarding / UPnP issues with media server software [closed]

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
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2answers
52 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
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0answers
19 views

Configuration of OSPF in broadcast multiaccess networks [closed]

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
48 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
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2answers
27 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
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0answers
19 views

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

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 ...
0
votes
1answer
22 views

What's are prospects of SDN? [closed]

I am software developer. I have nice in terms of income job offer related to SDN technologies. So I will have to learn thing like opendaylight, lighty.io, YANG, etc. Does this technology has prospects?...
0
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1answer
76 views

How to get IP address of device from its MAC address on network?

Though it seems possible duplicate of this question. But the need to ask this question again is to simplify the scenario and the demands to just finding the IP address of the device. The network in ...
0
votes
1answer
20 views

Bandwidth limit between CPE and Provider Equipment

I have 4 different WAN links for redundancy one of them is 15mbps MPLS and the other ones are 30mbps Internet , 50 mbps Internet and 10 mbps MPLS , the way that it is set up is that we have load ...
0
votes
0answers
14 views

How can i know the device info using MAC address of the device? [closed]

I have got a router in the institute, I wanna monitor the visited websites by the users through it, and moreover, I want to trace the person using the mac address of the device listed in the statics ...
0
votes
0answers
18 views

What the Difference between port triggering and port forwarding in a router? [closed]

What the Difference between port triggering and port forwarding in a router? I've used port forwarding for using SSH over the internet. Kindly tell the purpose of port triggering.
1
vote
2answers
54 views

Clock Synchronization in a Network

I had a query in Clock Synchronization in a LAN.. If we already have clock synchronization in a network with the help of preamble field in an Ethernet frame. Why should we need still protocols such ...
1
vote
1answer
34 views

Typical signs of fragmented IP fragments

Given, for example, a Wireshark trace, how can I identify that the IP fragments that I am sending are themselves being fragmented? For example, if I'm sending 1500 byte IP fragments, and the server ...
0
votes
1answer
17 views

Site-to-Site IPSEC through load balancer with persistence

what I'm trying to achieve is a site to site IPSEC tunnel going through a load balancer, (both sites have pfsense and balancer is f5 big ip) the reason why i'm trying to do that is because: - Site A ...
0
votes
1answer
32 views

Port mirroring question

I've got some questions about my port mirroring configuration. I'm working with alcatel omniswitch. After configuring port mirroring my destination port is loosing network connection and it can't ...
2
votes
1answer
30 views

juniper vlan-ccc vs ethernet-ccc for eompls

In juniper ethernet-ccc transports customer's vlan end to end. Does vlan-ccc also transport customer's vlan across as well? thanks.
0
votes
0answers
30 views

Struggling with Ospfv2 Single Area

My network looks like this: I do know how to configuration works. Enable config terminal Router ospf 10 Router-id (1.1.1.1 and 2.2.2.2 to each router) Network (ip) (subnett mask) area 0 I've used ...
0
votes
0answers
22 views

ttcp command missing on Cisco 3850

We operate a hub-and-spoke network. The hub is a 3925. I have been using the ttcp command between the hub and each spoke to measure bandwidth. I realize that the test is flawed, but finding relative ...
0
votes
3answers
80 views

which is faster and why: One big file or split the big file into chunks, then transfer it over the Internet

Let's say I have a file that's 10GB and I want to transfer it over the Internet. Will it be best and fastest if I split the file into many smaller files and send it, then reassemble it after transfer, ...
2
votes
1answer
35 views

What is the advantage of Supervised Machine Learning over Deep Packet Inspection in Network Traffic Classification?

As per the definition of Deep Packet Inspection (DPI), it uses signatures for packet filtering. Supervised Machine Learning can help put a label on a packet which does not get identified by Deep ...
0
votes
0answers
20 views

Can't access services on my other IP on same network interface GNS3 and Host

I have one physical NIC that is assigned an IP address (10.14.255.240). Inside of GNS3 network simulation tool, I also have a another 'virtual' interface with another ip address (10.14.255.245). Both ...
0
votes
0answers
31 views

Cannot SSH into different subnet

I'm very new to pfSense and I have some very basic networking knowledge. I bought a server, installed Proxmox and virtualized pfSense. Now I want to create an enterprise ready network topology: The ...
10
votes
5answers
2k views

Is policy routing bad?

I heard that network engineers tend to avoid policy routing. I am thinking to source-address dependent routing for example. Is policy routing bad practice? If so, why?
0
votes
1answer
30 views

Problem Forwarding Port 22 for SSH [closed]

I'm trying to forward port 22 so I can SSH into my PC from a different network but it doesn't seem to be working. I can do ssh mihkel@my_public_ip from the network that the PC is on but it doesn't ...
0
votes
2answers
34 views

How can i find which cisco switch port is connnected to specific port of Fortigate?

there is any way to find that which switch port connected to mgmt port of fortigate? for example can i enable lldp on Cisco switch and Fortigate together? Fortigate 1500D (version 5.6.2) and switch is ...
0
votes
1answer
29 views

Does Network segmentation work using different switches connecting to router?

I just learnt basic networking. If I have 2 departments which I do not want them to access each other's networks, does using two layer 2 switches connecting to the router does the job or do I need a ...
0
votes
1answer
21 views

STP Shut Down Port for Camera on HP Procurve

I have a VLAN dedicated for camera devices. We have learned that some camera ports keep going into the down state, and the logging indicates it is caused by STP: sw404(config)# show logging -r 7 ...
0
votes
0answers
19 views

Disable triggered updates in RIP

I am having different behaviour with two versions of Packet Tracer (PT) when dealing with RIPv2. When I use PT5 and a link goes down in my network, the router does not send an immediate update but, in ...
0
votes
3answers
25 views

Enrutar Vlans en FortiGate 80E

Good afternoon, I currently have a Fortigate 80E. which has 2 ports used, in port 1 comes vlan 4 and in port 2 enters vlan 2. But I can't find a way to route them to each other. If I create static ...
0
votes
1answer
14 views

Can not undo startup system-software of a Huawei quidway switch

I follow this article: In the _hide, I can not undo startup system-software: [-LW-A]undo startup system-software ^ Error:Unrecognized command found at '^' position. the ...
0
votes
1answer
40 views

SFP to RJ45 for 10Gbit network

I am in the process of upgrading some of our network into 10Gb and grabbed the following: A network switch by netgear, mode:GS110EMX A bunch of assorted cat8 cables(for future proofing) Two 10gtek ...

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