All Questions

Filter by
Sorted by
Tagged with
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
6 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

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
24 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] ...
1
vote
3answers
88 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
2answers
31 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
10 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
0answers
18 views

How is traceroute path different from the AS path in the routing table? [on hold]

My ISP happens to be one of the RIS collector's members. From this raw BGP data collected by RIS, I can see the entire routing table of my ISP. However, when I compare the AS path from my ISP to a ...
0
votes
0answers
11 views

Why ssh-keygen -f “~/.ssh/known_hosts” -R “hostname or ip” dosent work? [on hold]

when i type this command, the following message appear. line 1 invalid key: -----BEGIN ... ~/.ssh/known_hosts is not a valid known hosts file. Not replacing existing known_hosts file ...
0
votes
0answers
17 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 ...
0
votes
2answers
18 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
1answer
25 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
0answers
14 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
23 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
35 views

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

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
32 views

Packet scheduling in LTE/5G core network components

Scheduling algorithms must be used in radio side of these technologies in order to map radio sources to incoming/outgoing data packets and satisfy quality of service requirements such as latency and ...
0
votes
0answers
11 views

Router for SmartTV [on hold]

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
33 views

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

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
20 views

What's are prospects of SDN? [on hold]

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?...
1
vote
2answers
5k views

SSH failing from Cisco routers to Dell switches

Running into two separate but probably similar issues. First issue - I have two Cisco 2900 Series routers on firmware v15.2(4)M4 trying to ssh into a Dell 5548P stack on firmware v4.1.0.8. All ...
1
vote
2answers
35 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 ...
0
votes
1answer
58 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
0answers
16 views

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

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.
0
votes
1answer
17 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
12 views

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

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 ...
1
vote
3answers
118 views

For 2G/GSM networks, are there “portable” cell towers?

Let's suppose I am in the middle of the desert or some kind of jungle, and I have no 2G/GSM Signal. I would like to know if there is any civilian technology (that is or maybe isn't available to the ...
3
votes
1answer
168 views

LTE EPC Synchronization between redundant components

I am investigating resiliency in LTE Evolved Packet Core. Each EPC components has information storage as defined for each user in 3GPP TS 23.40 (Ch 5.7). In case of failure this info needs to be ...
2
votes
1answer
473 views

When LTE to UMTS IRAT handover is made, what changes occurs in MAC layer?

I have not been able to figure out any changes in MAC layer. If there doesn't occur any change then please give the reason
1
vote
2answers
610 views

How GSM network routes Internet packets?

How does a GSM network route internet packets? Does GSM use NAT based PAT like a physical Router? For example, user A visits website #1 and user B visits website #2. how data of website #1 are given ...
1
vote
1answer
29 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
69 views

Cisco LAP1142, usable without WLC ? Alternatives to a WLC device?

The title pretty much says it all. A charity I volunteer for was given a whole bunch Cisco 1142 ligth-weigth AP's. (A demolition guy pulled them from the building he was taken down and donated them.) ...
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
0answers
8 views

Intel AC 9260/9560 sometimes not getting ARP responses from Linksys WRT54G running DD-WRT [on hold]

Hello NetworkEngineering StackExchange, I hope this is the right place to ask this and that my description of the problem can be understood: A friend of mine is having trouble with her wifi network. ...
-1
votes
0answers
12 views

How is my android security camera app accessing my internal home network externally? [on hold]

I installed a SWANN home security camera system and installed it on my network. Somehow, I can access my cameras on my home internal network via the SWANN Android app. However, I did not provide ...
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
0answers
4 views

How to generate dataset using cooja simulation software [on hold]

how can i obtain dataset which consist of information about network connections by using cooja simulator by creating network of iot devices and simulation of various cyber attacks on them.
-1
votes
0answers
17 views

How many IP fragments are sent? [on hold]

An IP Packet of size 5,730 bytes is sent over a link with a 600 byte MTU How many IP fragments are sent? Fragment 3 is lost, will the IP layer request retransmission?
0
votes
1answer
14 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
3answers
72 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, ...
0
votes
0answers
6 views

Is there a way to used SFTP but with a udp connection [on hold]

I need to establish a secure connection with the server where authentication is required but at the same time once the connection is established I want to send files over udp as it is faster compared ...
0
votes
0answers
9 views

Why Wake-On-LAN does not wake up the machine? [on hold]

I am trying to remote-desktop-connect (RDC) to a Windows 10 machine through VPN, WakeOnLanGui, and RDC. The necessary settings have been made on the remote machine to allow this. The problem is that ...
0
votes
1answer
26 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 ...
7
votes
1answer
2k views

Cisco BGP Graceful Restart behavior

In our environment we generally have ASR-1000X-2s everywhere peering via iBGP/eBGP. These routers have no redundant RPs, hence cannot keep forwarding traffic while the router reboots or crashes. As ...
2
votes
0answers
17 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
2answers
36 views

How To Route Private Subnet Traffic To Internet Via Public Subnet In The Same AWS VPC?

This scenario is simple, created a VPC (CIDR > 172.16.0.0/16) in AWS Management Console, created 2 subnets in it. Public (CIDR > 172.16.1.0/24) Private (CIDR > 172.16.2.0/24) Public route is set on ...
0
votes
0answers
28 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
15 views

Cloud, Linux, learn for free of cost [on hold]

I want to learn cloud but due to financial issue, I can't bear the institute fees. Is there are any website who taught on free with VC or videos and all want to lean linux
2
votes
1answer
29 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
19 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
0answers
23 views

HDMI over home network [on hold]

I'm trying to achieve video streaming from two laptops, to two (or more) tvs, in a professional way. Ideally, either laptop could stream to both TVs simultaneously. The laptops don't have HDMI outs, ...

15 30 50 per page