Questions tagged [gateway]

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How can I ensure that NAT hairpinning goes through the gateway?

When I enable NAT hairpinning, will accessing LAN devices through the public IP go through the public network? After enabling NAT hairpinning and establishing a TCP connection, if the public IP ...
ishunsei's user avatar
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Trying to reach an ip address through a gateway on windows [closed]

I have a device 192.168.3.90, I set the gateway to 192.168.3.193. 192.168.3.193 is a windows machine with a shared connection. That shared connection works for any website or ip accessible from that ...
Amr Rahmy's user avatar
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Communicating to a device with a random IP, Subnet Mask and Gateway

I think am looking for a way to reliably communicate with devices connected to the network with "wrong" configurations. Our company sells products that can have their network settings ...
nickolaij's user avatar
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1 answer
765 views

Not able to ping device with different subnet on gateway and ip adress

I am trying to ping a device with IP 192.168.0.200, subnet mask 255.255.255.0. It is configured with gateway adress 192.168.1.1. Is it because the gateway subnet, and ip adress subnet is different i ...
alehol's user avatar
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Hop 1 of the traceroute to Internet is not the gateway [closed]

I'm assigned to a public IP address from my organization. Here is my default route: IP: 45.150.164.x Gateway: 45.150.164.1 netmask: 255.255.255.0 And here is the result of traceroute 8.8.8.8 from my ...
wyb's user avatar
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If there's a NAT-capable gateway between WAN and a switch, why is a switch helpful?

To preface this question, my question is somewhat related to what I'm trying to understand as the difference between layer 3 switches and routers. The main difference between the two is that layer 3 ...
itsmarziparzi's user avatar
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2 answers
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Public IP Configuration which has a private gateway

I bought a public IP from my ISP and they provided me with the following details. WAN IP :10.129.69.157 LAN IP : 196.188.173.32/30 How do I configure this on my side ? The told me to do configure as ...
Tinsae's user avatar
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Do NAT Gateways Need to be the First Address of the Network?

NAT gateways are often given the first usable address in an address space. Do any protocol specs require this? Or is this just a convention? I skimmed RFC 1918 and RFC 2663 but didn't see anything ...
Brett Holman's user avatar
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Will there be an ARP-Request to a gateway outside the subnet? [duplicate]

This is a question from an exam I don't know the answer to. A client has a wrong configuration: He thinks his only gateway is not in his own subnet and needs the MAC address of the gateway. Will he ...
rwnd's user avatar
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Is it possible to separate gateway function from router? [duplicate]

A gateway is an entry to another network, usually router device play the gateway function as well. Is it possible that router delegate the gateway function to a device in the LAN and make it to be ...
Ryan Lyu's user avatar
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Does a gateway always have to be on the same subnet as the host IP address? [closed]

The obvious answer is yes, I suppose, but my VPS provider doesn't seem to agree. I've just uploaded a Ubuntu 20.04 instance, and the provider is telling me: IP address: 77.xxx.yyy.zzz/32 Gateway: 10....
EML's user avatar
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Gateway with multiple VLAN IPs on one NIC [closed]

I would like to separate several hosts from the local network and put them behind a firewall. I would like to use VLANs to "physically" separate them instead of using just different subnets. ...
user236012's user avatar
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1 answer
109 views

Must the host IP be contained in Router's subnet?

The settings are: manually set my host IP: 10.0.1.6/24, gateway: 10.0.0.138/24 they both know each other's MAC (arp -a shows the list) and there is a direct physical connection between them. From the ...
Snow's user avatar
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5 answers
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How is an IP packet sent to the gateway?

This is some route command output sample: $ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.240.1 0.0.0.0 ...
Adrian's user avatar
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1 answer
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How does a device receive default gateway IP address?

When and how does a device get information about default gateway in LAN? I know you can define default gateway statically, but which protocol is used when it is not statically defined? Is it from ...
Welite's user avatar
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Software and Hardware Gateways

Are Gateways available as a standalone device on the network or always as a part of other system like within a router, proxy server and Firewalls ? Assuming that the router, proxy server and Firewalls ...
Colin Jack's user avatar
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Different APs can be assign gateway from different brand

Edge-core EWS101 can be assign as gateway for EnGenius ENS202 APs ? Different brands will be work as gateway for wireless controller ?
Tech's user avatar
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2 answers
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General: What is a dynamic gateway, how does it work, where is it used?

I saw this option in my OPNsense gateway configuration, and was hoping someone could shed light on what it is, exactly: Dynamic gateway policy: [YES/NO] This interface does not require an ...
Avery Freeman's user avatar
1 vote
2 answers
1k views

Safe to remove ip default-gateway?

We recently changed IP schemes from 192.168.x.x to 10.x.x.x In doing so, I noticed that the prior network engineer had ip default-gateway in the configuration pointing to an old default gateway that ...
Craken's user avatar
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Connecting an ASA behind an AT&T router/gateway

I am attempting to setup a temporary network for a company in transition that is moving into a new building. They just bought and had installed an AT&T business internet connection. They have a ...
jim's user avatar
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allow 2 machines to communciate each with their own network? [closed]

2 networks. Network 1 local and i want to be able to receive and send information to network 2 which is at a remote site, branch site. How do i go about connecting both networks so that both machines ...
AMD's user avatar
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2 votes
1 answer
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Vxlan with internet access - possible because of high MTU?

So i was wondering, because VXlan requeres a high mtu to work properly (some set it even as high as the max configurable MTU (9000ish)), how would providing internet access for these nodes/servers ...
Loco's user avatar
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How to build secure access for cloud machine in small startup [closed]

We have 7 member team (3 dev + 2 qa + 2 Sales). We host our PROD + QA + DEMO server in GCP. As of now, all our PROD/QA/DEMO/DEV/QA-DB/DEV-DB machine are having public IP, so that we can ssh into them. ...
Bhuvan's user avatar
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How to forward port 80 and 443 on pfSense to a (internal) nginx webserver?

Yesterday we did a "big bang" firewall switch in our company. Our new firewall is a pfSense server. Lets say our external ip is 84.1.1.1, pfSense is 192.168.1.1 and our web server ip is 192.168.1.2. ...
CodeNinja's user avatar
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Two routers on the same subnet - Possible issues?

What issues can occur when two routers are set to the same subnet (no cascading, both cable connected to the same switch)? For instance: - LAN: 192.168.1.0/24 - Router A: 192.168.1.254 - No DHCP, ...
Riccardo's user avatar
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3 answers
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How are packets ( received from the server ) sent to the host from the gateway ( which is present in the host network )?

If the host is receiving packets from a server, these packets have a destination IP address of the host and it is first received by the gateway present in the host network. Now the gateway checks the ...
pal's user avatar
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1 answer
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decoupling of network and link layer addresses

can you pls help me understand what the instructor is trying to convey in the following slide. from what I understand:- network address and link address are independent in the protocol layers but ...
pal's user avatar
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1 vote
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What my traceroute only list one hop?

This is my topology in my network. It's easy to know my server can communicate to 172.18.32.254/24. But when I traceroute the path, I only get one hop to it. My doubt is why it do not through 102....
aircraft's user avatar
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static and default routes on unixoide OS question

I have a question concerning static routes and default gateways. I am trying to rebuild an exercise similiar to an older CCNA question (https://www.omnisecu.com/cisco-certified-network-associate-ccna/...
pebwindkraft's user avatar
5 votes
5 answers
5k views

How does a host in one subnet know to forward the packet to the router MAC, when trying to send a packet to another subnet

I am trying to understand the ARP protocol and I could not understand the above. Consider the topology as follows: H1(1.1.1.1) - (1.1.1.0)R(2.2.2.0) - H2(2.2.2.2) My understanding is that if the ...
Anisha's user avatar
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3 answers
1k views

Single-homed connection to ISP without NAT feature

Is it possible to connect my private network to the ISP router without a Network Address Translator (NAT) feature enabled on my router? As I understand, in a single-homed scenario connection to ISP, ...
A.A's user avatar
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3 votes
2 answers
2k views

Is an IP address necessary for a gateway?

When a IP sends something to another host outside the same subnet, it constructs a packet (L3) with the target IP being the IP of the target host, but the frame (L2) has the destination address = ...
iBug's user avatar
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2 votes
0 answers
146 views

How is it possible to have a default gateway outside of the network range of any interface? [closed]

I always thought that the default gateways has to be on the same network as the server/client trying to connect to the internet. However today I rented a server from Hetzner and the server is able to ...
Rick McClatchie's user avatar
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1 answer
2k views

Using DTMF signals of a VoIP gateway when interacting with an analog ministation (PBX)

There is such a configuration: Internet ===> [WAN port] Grandstream HT812 with hosted PBX users [FXS ports] ===> analog ministation Panasonic ===> analog telephone sets Situation: When a caller ...
Snowjay's user avatar
1 vote
1 answer
50 views

Is it possible to discover the internal server which is sweeping our network by the gateway Juniper Switch?

Is it possible to discover the internal server which is sweeping our network by the gateway Juniper Switch? Our network topology is like this: If the servers under access switch all are different ...
aircraft's user avatar
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1 vote
2 answers
364 views

Virtualize pfSense on VMware

I'm making a network model and I have issues with virtualization of pfSense under VMware. I have a client in a VLAN 220 (172.2.20.100/23) trying to ping his gateway (pfSense : 172.2.20.1/23) but it ...
PiKeTemplar's user avatar
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2 answers
1k views

Connection between two networks with different IPs and identical subnets?

How can we establish communication between two networks with different IPs but same Subnets? Network Connection 1: (Factory Network for machinery) I.P = 192.168.19.X S.N = 255.255.255.0 G.W = 0.0.0.0 ...
nar0909's user avatar
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1 answer
50 views

Second default gateway on demand? [closed]

I am in to a strange network setup, Hosts on the secure network, are all under a domain and use various services on the domain. When ever the need to access web application on the more secure network ...
Vagelism22678's user avatar
1 vote
1 answer
372 views

What's the meaning of `circuit level gateway`?

The proxy server is an important security function provided by the Internet "circuit level gateway". Its work is mainly at the session layer of the Open Systems Interconnection (OSI) model, which acts ...
aircraft's user avatar
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4 votes
4 answers
2k views

Do VLANs within a subnet need to have their own subnet for router on a stick?

I have been creating a network lab in packet tracer for practice. I have 3 vlans in subnet A and I am trying to configure router on a stick at gig6/0 on the bottom left of the image. Do I need to ...
Jon Stinnett's user avatar
1 vote
2 answers
89 views

Can you tell whether a device is a gateway or not from its routing table?

When looking at a device's routing table, can you tell whether it is a gateway device between some networks or if it is not a gateway device?
Tim's user avatar
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Is "gateway" a concept between two or more networks or a concept belonging to just one network?

Is "gateway" a concept between two or more networks or a concept belonging to just one network? When a device is connected to two networks, if it is listed as gateway in the routing tables of the ...
Tim's user avatar
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3 answers
434 views

Is a gateway a bi-directional or uni-directional concept?

If I am correct, a gateway device has several network interfaces. Is a gateway a bi-directional or uni-directional concept? In other words, is a gateway for bidrectional communication between two ...
Tim's user avatar
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1 vote
4 answers
149 views

Does a gateway need to be designated?

Does a gateway need to be designated? I thought a gateway between two networks is a device explicitly designated to be a gateway, out of several qualified devices connected to both networks. That ...
Tim's user avatar
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4 votes
4 answers
1k views

Is a gateway both a router and a NAT?

From Tanenbaum's Computer Networks: The general name for a machine that makes a connection between two or more networks and provides the necessary translation, both in terms of hardware and ...
Tim's user avatar
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1 vote
3 answers
2k views

Where is the VLAN's gateway location

Where is the gateway IP address of the VLAN? We know the Switch can divide the VLAN, such as it can divide the 103.19.1.0/24 to 103.19.1.0/25 and 103.19.1.128/25. if the 103.19.1.0/25's gateway IP ...
qg_java_17137's user avatar
21 votes
3 answers
30k views

Difference between router and gateway

What is the exact difference between router and gateway? In Network configuration we set the default gateway IP address, but in reality we call the device configured with that IP address as router?
Raja's user avatar
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