Questions tagged [network-access]

One of the three layers of network design. The main characteristics of the network access layer is that it provides the access point for devices connecting to the network at a reduced "cost-per-port".

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What is real difference between host and node in network

According to wikipedia host is A network host is a computer or other device connected to a computer network. A network host may offer information resources, services, and applications to users or ...
apm's user avatar
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8 votes
3 answers
7k views

Point to point LAN using two sonicwalls at seperate locations

We have a two-location business with our head quarters in Arlington, and a remote office in Dallas. Currently, both of our offices are running a sonicwall NSA 2600 and hold a VPN tunnel between each ...
Eme's user avatar
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7 votes
1 answer
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DCF and PCF in Wifi-networks

I am studying, trying to learn how DCF (Distributed Coordination Function) and PCF (Point Coordination Function) works as access methods in WiFi, and how they relate to infrastructure vs ad hoc ...
martinr's user avatar
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5 votes
2 answers
10k views

How does the ARP table work in case of the Gateway Router?

Suppose I am a host, I understand how ARP works in case I address an IP within my subnet. For each IP address there is a corresponding MAC address, and the owner responds to my broadcast ARP query. ...
Ninja Bug's user avatar
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5 votes
2 answers
564 views

Assigning a single switchport to different VLANs

I've been trying to figure out how to achieve the outcome below. VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- ...
Samson Oduor's user avatar
4 votes
2 answers
506 views

Unbundling local loop

When we are dealing with local loop, we indicate the last mile of connection from the CABINET (or whatever else) to the subscriber. Now, I'm asking to you, the local loop is the medium of the access ...
rollotommasi's user avatar
4 votes
1 answer
13k views

Cisco port security static vs sticky+static

I don't see a different between the two. Both make it to the running config. 1) sticky + static Switch1(config-if)#switchport port-security mac-address sticky ? H.H.H 48 bit mac address Switch1(...
Noob's user avatar
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4 votes
1 answer
1k views

Deploying Virtual Stackwise Catalyst 9400

I am looking into deploying Virtual Stackwise on the Catalyst 9400 series switches. I wanted to know based on best practices where should the VSL links be deployed on the Sups or the modules? Is there ...
vng1203's user avatar
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4 votes
1 answer
2k views

What is Open Radio Access Network?

what is the concept of this open radio access networks?? more specifically what is this "open" for? how is it different from those of general RAN?
Sayantan Dey's user avatar
4 votes
1 answer
374 views

MAC ACL to prevent access to unauthorized computers

My company wanted to prevent rogue PCs from being connected to our network. Network access must be allowed only for our company users and specifically for PCs, Printers.. that are provided by the ...
samikzr's user avatar
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3 votes
3 answers
2k views

Multihomed Internet edge without BGP. Overlapping routes, a viable design?

While the industry is preaching cloud in every market, and users, whether eagerly, reluctantly or unwittingly start falling in line everywhere, few seem to talk about the actual fabric of the ...
Roy's user avatar
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3 votes
3 answers
8k views

How to secure WiFi with user name and password?

We have internet access in both LAN and WLAN in our offices which is only used to internet access. How do we enable a password based authentication in this infrastructure so that authenticated user ...
Sayeed's user avatar
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3 votes
2 answers
2k views

Cisco ASA 5510 implicit deny dropping traffic despite permit any ACL

I'm trying to allow VPN access through a specific public IP address on our company ASA. The ASA is currently configured with a /29 public IP address as follows: Interface Ethernet0/0 "outside" IP ...
heiwa's user avatar
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3 votes
1 answer
210 views

ASA 5505 cant access inside network from Anyconnect SSL Connection

So I have a ASA I can connect via SSL perfectly fine receiving internet.My issue is that I cannot ping any device on the network especially the inside network on my router. My topology is a ASA 5505 - ...
andrewixl's user avatar
3 votes
2 answers
1k views

OSPF can't ping other network segments

I'm trying to setup a very simple OSPF network with Vyatta. From the best of my knowledge they let all traffic in by default, and I haven't set any firewall rules. The vyatta instances are launched as ...
Muff's user avatar
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3 votes
2 answers
220 views

Mobile IP in a large-ish IPv4 network

So we are looking into implementing IP mobility in our network. The use case would be for a laptop to be able to roam between wired and wireless mode of operation while retaining all TCP/UDP based ...
syneticon-dj's user avatar
3 votes
1 answer
436 views

I am trying to configure DHCP to assign IP Address from other network!

Let us say there are two Networks: A (10.100.90.0) and B(192.168.1.0). Network A has a DHCP server. We know that when multiple devices are connected to network A, the devices get the IP address from ...
Vineeth Penugonda's user avatar
3 votes
1 answer
1k views

Port forwarding doesn't work

I'm using an EdgeMAX router. From the GUI, I'm trying to forward the WAN (eth1) port 22 to the LAN (eth2) port 22 to a local IP address (172.16.12.3) to allow SSH from outside my network. When I tried ...
Andriniaina Andy Nkili Meyong's user avatar
2 votes
4 answers
25k views

What is a "routable" IP? [closed]

Short bg: I wanted to host a website on my laptop (192.168.0.102) via apache server. I set up port 8080 and forwarded the port that I was able to access it via 192.168.0.102:8080. Then there was a ...
user avatar
2 votes
5 answers
2k views

Access non-public IP computer

I am looking into methods how to access my PC from internet. I do not have a public IP (neither for my router nor local PC). I know I can do 2 things: ask for public IP and simply port forward ...
Lukáš Řádek's user avatar
2 votes
1 answer
4k views

pfSense join 2 networks

I've got 2 pfsense boxes taking care of separate networks, with separate gateways. We've managed to drop a cable between the 2 networks so would now like to join the 2 networks so machines on each ...
MouseBat's user avatar
  • 121
2 votes
2 answers
214 views

Spoofing the L2/L3 information and replication across L2

Could I have a server that spoof the same IP/MAC address of my server on the same L2 network that: 1 - does not do any conflict on the network. 2 - And on the same time when capturing packets on my ...
Anwar Ahdab's user avatar
2 votes
3 answers
2k views

One router as WiFi receiver and AP at the same time

I know this might be stupid question, but I had troubles finding the answer on Google. I would like to extend my Wi-Fi, but I read that repeater is not really good idea due to sharing the same Wi-Fi ...
Romen's user avatar
  • 23
2 votes
2 answers
98 views

Network ( routing and switching) , security

In my company network i am installing new cisco2811 router but i have problem, my LAN network can not ping and access network. i get point to point internet from ISP. PTP IP is 192.186.86.200/24 and ...
waleed jamil's user avatar
2 votes
1 answer
3k views

VLans Cisco Packet tracer

I have two vlans configured through a multilayer switch and one router with DHCP service. I configured trunk and access ports as shown in the image below. I need to block traffic between vlan's. ....
Liliana Loaiza Pulgarín's user avatar
2 votes
1 answer
696 views

Using router as remote door to gain access to LAN network

What I want is that only certain devices get remote access to my network. I want to achieve this by using MAC address. Configuring this in my main router is not an option because it's too much work ...
John's user avatar
  • 21
2 votes
3 answers
309 views

LAN connection in school [closed]

Hi I currently working in school where we don't have LAN connection only one pc is connected to WiFi. Now I want to make a LAN Connection of 6 pc. Plz give me some guidance and which architecture is ...
user20030's user avatar
2 votes
3 answers
280 views

How to create a network with many access points or repeaters and guest access

I have an existing simple network with internet connectivity. We have four access points that do not offer true guest access. We would like to have four access points that offer wireless for the ...
Noobie's user avatar
  • 21
2 votes
1 answer
231 views

Estimating latency via distance and betweenness

I want to compute the relationship between delay (latency) with distance and betweenness. More specifically, if I know (let's assume) that the distance and betweenness values for two different ...
Eray Balkanli's user avatar
2 votes
1 answer
5k views

Printer on wired LAN not accessible from wifi in a differnet subnet

My network diagram is as follows: The printer on the 2-network responds to pings from the 3-wifi-network for sometime and then just drops out for some reason i can’t figure out. I have policies on ...
allwynmasc's user avatar
2 votes
2 answers
3k views

Access point triggering BPDU guard on sg500

ok so i have this port configure as an access port for vlan 10. I connected a cisco wireless access WAP321 configure to send untagged traffic to expand this vlan for wireless access. I have two of ...
Luis Coy's user avatar
2 votes
2 answers
279 views

Static NAT and PAT

I have two private IP addresses, want to make them NAT to 203.0.113.0/2 public IP address. WAY 1 : Static NAT (2 ip addresses NATted to one by manually) WAY 2 : PAT (Router gives port number ...
CoderBoy's user avatar
2 votes
1 answer
170 views

Why must host A continue to transmit after host b sends runt frame post collision on ethernet? (CSMA/CD)

Trying to understand example from computer networks: a systems approach ... -Host A sends Host B a frame at time t; Packet arrives at B at time t + d; (d = one link latency) Instant before frame ...
spacecadetmatt's user avatar
1 vote
2 answers
115 views

Does one need to personally manage MLPS VPN connection to have MPLS between building or can the ISP provide this connection for you?

There are 3 buildings (IT system) that need to be links together but the distance between them are very far apart (min between 230 - 470 km). How do one manage to provide connection between all of ...
Jeremy Lan's user avatar
1 vote
2 answers
145 views

Are ip:subnet combinations in ACLs different than everywhere else?

We're trying to debug a connection issue, and I can't find any solid documentation one way or the other. I'm not positive of the hardware we're using, but we can assume Cisco for now, as I doubt there'...
ctote's user avatar
  • 371
1 vote
2 answers
1k views

How is P actually chosen in P-persistent CSMA?

I am struggling to understand how the probability value P is chosen for P-persistent CSMA for any particular station, what's the logic behind this.I have read from Wikipedia . P-persistent This ...
S. M.'s user avatar
  • 358
1 vote
1 answer
561 views

How should I connect two sites through the internet? [closed]

I have two sites which are 3km away from each other, both sites have internet access from the same ISP. I would like both sites to have access to each other throught the internet routers (TP-Link TD-...
Jaz's user avatar
  • 123
1 vote
1 answer
50 views

protection method that you need to know exact 3 or more ports to access network

long time ago i found an wiki article for method that protect your network from unwanted access. method was something like: attacker need to know 2, 3 or more exact ports which are open to access the ...
Philip Scot's user avatar
1 vote
2 answers
834 views

Do DSLAM and OLT function like a switch?

Let's say for example we have the following hypothetical topology: In each network, can each user communicate with each other? For example, can User 1 ping User 2?
Noob_Guy's user avatar
  • 471
1 vote
1 answer
34 views

Router Extended Access Control List

Why can't we place the Extended ACL close to the destination not the source ? What will happen if we do so ?
user60845's user avatar
1 vote
1 answer
70 views

What's the meaning of "3D Universal Edge Routers"?

What's the meaning of "3D Universal Edge Routers"? I often see this term on Internet, but I do not understand what it stands for. Such as "MX240 3D Universal Edge Router", "MX480 3D Universal Edge ...
three-blocks's user avatar
1 vote
1 answer
161 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....
waleed jamil's user avatar
1 vote
1 answer
280 views

Authorize IoT devices to connect to a WPA2 network without a password

I have an air quality IoT device that connects to WiFi and report data to the cloud and are planning to install 100+ devices at a customer location. To install a device, the customer has to connect to ...
ananio's user avatar
  • 13
1 vote
1 answer
1k views

How to force users to authenticate to get IP adress from DHCP?

Can You help me !! I want to force users to authentificate to get IP from DHCP-server (win server) if not they can't get ip @ adress !! even they are connected to network
Ridae HAMDANI's user avatar
1 vote
1 answer
613 views

Ask users to register to gain access to Wi-Fi

I have been scratching my head on how this can be accomplished, we all know that almost all routers have a function for "private" Wi-Fi and a guest Wi-Fi access, the guest Wi-Fi on your router can ...
Tanker's user avatar
  • 113
1 vote
2 answers
192 views

How many Mac adresses have a switch in output?

I would want to buy a ethernet switch. But I have a question (maybe a noob's question...) that I can't find any answer on the forums... And I hope you will be able to answer. So if I buy an ethernet ...
frankee's user avatar
  • 11
1 vote
1 answer
41 views

Access Control Permissions

I have created a topolgy in packet tracer displaying two networks. I have cpnfigured VLANs on both of the networks and configured access control lists. However, I would like to configure access ...
Dot's user avatar
  • 21
1 vote
1 answer
3k views

Can not access my router externally (from internet) [closed]

I have a router Cisco 900E. I am trying to access the router externally(from internet. Non local device). I read a lot about the issue and configured everything suggested. I enabled remote access via ...
Rikotech's user avatar
1 vote
2 answers
165 views

L2 network design questions

Good afternoon everyone. I would like to know the textbook answer to a network I've been asked to assist with. I have an IT cupboard which serves the location as the MDF. I then have a variety of ...
eto.ttnflt's user avatar
1 vote
1 answer
296 views

Can a fortigate firewall know which device tried to access its restricted url?

In my network, a specific url is being blocked by fortiguard firewall. Now I want to know which all devices had tried to access that blocked url. I traced the mac address inside the packet. But how ...
abby rj's user avatar
  • 21