Questions tagged [subnet]
A subnetwork, or subnet, is a logically visible subdivision of an IP network. The practice of dividing a single network into two or more networks is called subnetting and the networks created are called subnetworks or subnets.
895
questions
0
votes
2
answers
8k
views
Enabling Samba Shares Across Subnets
I was curious how I could go about setting up SAMBA so that shares could be seen and used across different subnets. We have some Linux devices that are bound to Active Directory and we would like to ...
- 2,276
0
votes
3
answers
374
views
Using ISP's nameserver from subnet
My Ubuntu computer is connected to ISP via eth0. There's another subnet which is accessible via br0. This subnet is used to connect VirtualBox virtual Ubuntu to my host. IPs in this subnet are static.
...
- 2,407
0
votes
3
answers
611
views
Why would you use 192.168.0.0/16 over 10.0.0.0/8 [closed]
Most home networks use 192.168.x.0/24. I wonder why this range even exists. You could as well use 10.x.x.0/24 or something like that. So why did they waste the entire 192.168 range for private ...
- 17
0
votes
1
answer
83
views
Class C Addressing [duplicate]
I recently saw someone use '200.1.2.0/18.' This doesn't make any sense to me. This is a Class C address with a subnet mask of /18. I thought the subnet mask for a Class C had to be at least /24. How ...
0
votes
2
answers
2k
views
Linux route command. Two gatways on the same subnet range
I have a Linux box with two interfaces.
eth0 has ip 192.168.71.82/255.255.252.0
eth1 has ip 192.168.4.2/255.255.255.0
I need all traffic for subnets 192.168.4.0/24 192.168.3.0/24 192.168.2.0/24 to go ...
- 455
0
votes
1
answer
951
views
'IPv6' Newbie with IPv6 address assigment
I am new to IP v6 and I am looking to translate some existing private IPv4 addresses into v6 address assignment. Can someone please help me to answer/explain the questions below?
If I have an v4 ...
- 11
0
votes
4
answers
446
views
Simple routers and subnet question
I am new to networking and have a very basic question on subnets and routers..
Consider the below... 3 subnets and two routers...
subnet 11.0/24 is connected to Router 1 (R1)
R1 is linked to R2 ...
- 23
0
votes
2
answers
2k
views
Selecting subnets for a Service in Fargate
As we can see in the picture above, I can select as many subnets as I want. Does it mean, the tasks in the service are created across these two subnets?
Suppose I have one task running, in which ...
- 123
0
votes
2
answers
551
views
confused about CIDR interpretation
I am beginner in networking and trying to understand subnetting. What I understood is that
CIDR notation (Classless Inter-Domain Routing) is an alternate method of representing a subnet mask. It is ...
- 1
0
votes
2
answers
78
views
Feasibility of having two independent subnetworks on interconnected switches
I have the following setup, using two standard cheap switches that are interconnected by a long Ethernet cable:
|------ SWITCH #1
| [ ] Equipment with public IP 217.x.x.101 (subnet 217.x.x.96/29)
| [ ...
- 1
0
votes
2
answers
85
views
Subnet CIDR Scheme
I am redoing some VPC work that my predecessor did. I haven't setup a lot of networks, so I wanted to double check what I think makes sense isn't breaking some rule that I'm not familiar with.
What ...
0
votes
1
answer
3k
views
What IP addresses are included in a subnet "range"?
I'd like some help understanding subnets (CIDR).
I'm using a tool to check if an IP is in an acceptable range given a CIDR address. When I input an IP address (12.245.105.190) and check it against ...
- 113
0
votes
1
answer
2k
views
Unable to Ping a server IP which is outside the subnet mask
This is the setup we are having:
2 servers which are in HA[High Availability Network] are configured with the following IP address
Server 1 --> 10.54.48.x and
Server 2 --> 10.54.49.x.
There is a ...
0
votes
1
answer
171
views
AWS: Public vs. Private Subnets for multi-tiered web applications [closed]
Is there a recommended "best practice" for deploying multi-tiered web applications into AWS as it relates to public and private subnets? Most of the documentation, including AWS' suggest public for ...
- 153
0
votes
1
answer
89
views
Two subnets on one LAN
I have a simple 192.168.1.x/24 LAN
GW & DNS = 192.168.1.254
My workstation is 192.168.1.101
I wish to setup a parallel mirror LAN for testing using a 192.168.10.x/24 subnet on the same switch.
...
- 153
0
votes
3
answers
160
views
Rgd: Subnetting about 370 hosts on a /24 Network
Rgd: Subnetting about 370 hosts on a /24 Network
I am doing subnetting for the following.
There is a school, which got level 1 which is main lobby and 5 levels of classrooms ( level 2 to 6 )
I ...
0
votes
3
answers
888
views
IP Address Planning for our Network
We have a /24 IP Address range for PCs containing 240 allocated addresses at the moment.
Our company is planing for expansion of another 50 PCs,
our existing IP range is 192.168.8.0/24
Do we add on ...
user1533629
0
votes
1
answer
97
views
subnetting a class c on a cisco 3825
I have a class C that I want to better understand before I implement a change.
Right now,
ip address 192.168.0.1 255.255.255.192
ip address 192.168.0.65 255.255.255.240 secondary
So, where is the ...
- 125
0
votes
2
answers
134
views
for a multisite (doctor offices) is subnetting required if we are going to apply AD?
Basicaly we have 4 offices connecting to a central location through vpn which hosts the dns file servers. We are implementing active directory with user groups and permissions.I was wondering if ...
- 1
0
votes
3
answers
4k
views
Cannot connect to computers on same subnet
Newbie question. I have a motorola surfboard router and two computers running windows 7 64bit Pro. Both can connect to the internet fine, but they cannot see each other. I need to remote desktop from ...
- 101
0
votes
3
answers
4k
views
Consequences of a subnet mask?
On a consumer-grade router, if I set a subnet mask to limit the number of concurrent users (for example, 255.255.255.248), could this cause problems for those users (accessing the web, etc)? Do I have ...
- 1,545
0
votes
2
answers
179
views
How to split my windows network with the least pain?
I am managing what can only be described as the little network that grew. It began life with a linksys router, 3 windows machines and a dsl connection. Through the years, lots of servers, network ...
- 1,381
0
votes
2
answers
238
views
Is This the Correct Way to Setup AWS Private Subnet -> NAT -> Internet
We want our internal private EC2 instances to have access to the internet so they can download software and install security patches. Of course, out of the box, your private subnet servers will not ...
- 115
0
votes
2
answers
478
views
Can I acess a web server located in another subnet? [closed]
I have a Laptop and a PC. My first laptop shares the same LAN as the PC, let's say they have 192.168.1.10(Laptop) and 192.168.1.20(PC) so I can SSH into it, ping it, etc… and vice-versa.
Now, I have ...
- 1
0
votes
1
answer
315
views
How am I receiving ARP brodcasts from a different subnet?
My local IP/subnet is 10.33.19.*/24, and yet I am occasionally receiving broadcasts requesting information from and concerning IPs in the 10.17.*.* range. I was of the impression that ARP requests do ...
0
votes
1
answer
585
views
Server 2019 AD Subnet "Best Practice"
While assigning subnets to a single server on a single site, I am not sure which way to properly create the subnet.
Example:
If I have a single DHCP Scope of 10.190.8.0/21 (addresses 10.190.8.1 to 10....
- 1
0
votes
2
answers
394
views
Weird routing behavior between 2 Subnets
I have two Subnets and the Routing works like this:
Client A can Ping (ICMP) Client B
Client B can't Ping (ICMP) Client A
There are no Routes manually configured in the Access Point (Google Wifi ...
- 103
0
votes
1
answer
6k
views
Ip addressing for serial routing
I have the following packet tracer diagram:
I have range of ip address : 10.0.0.0 - 10.0.255.255
I need to assign ip addresses from this range to the routers' serial interfaces as well as subnet ...
- 35
0
votes
1
answer
619
views
Subnetting/Supernetting Configuration
I have an existing network. It looks like this.
Router LAN (192.168.0.1 /24) -> Switch (192.168.0.10 /24) -> Workstations (192.168.0.100 - 192.168.0.200 /24)
Our network has expanded and I need to ...
- 3,154
0
votes
1
answer
45
views
Selective Apache v2.2 Authentication
I would like to modify this snippet so that connections from a certain IP subnet will be accepted without a requirement for authentication.
Is this possible?
TIA
Shaun
<Location "/rssbus">
...
0
votes
3
answers
2k
views
In subnetting, is a router interface considered a 'host'?
When calculating the subnets in VLSM, you generally need to specify the number of hosts in a subnet. Should I consider a router's interface a host as well?
Correct me if I'm wrong, but I believe the ...
- 279
0
votes
1
answer
3k
views
Two-way routing for router and openvpn server subnets
I have a router with IP 192.168.1.1 subnetting 192.168.1.0/24.
On that subnet, a synology nas has an IP of 192.168.1.181 and is running a VPN server using subnet 192.168.2.0/24.
When I connect a ...
- 115
0
votes
1
answer
111
views
Linux kernel behavior when dealing with colliding subnets
I'm using openconnect to connect to my office VPN. They push some pretty crappy/aggressive routing rules allocating ALL of the private IP address spaces >.<
After I connect to my office VPN, my ...
- 103
0
votes
4
answers
973
views
Server nics on two subnets: gateway?
Server is connected two two separate, isolated subnets via two physical nics. Is there any way the server can act as a gateway for the two networks to communicate? To clarify, I don't want any ...
- 559
0
votes
1
answer
931
views
Setting up a multi-floor wifi guest access [closed]
i just graduated from a CS bachelor so while i'm familiar with networking, i never deployed an actual "business" network before, and i was just asked to provide wifi guess access to a 16-floors ...
- 13
0
votes
1
answer
2k
views
incorrent subnet/mask combination
For a network interface, I have defined a range of addresses for DHCP.
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
link/ether 08:00:27:5a:3e:be ...
- 1,052
0
votes
2
answers
161
views
What is this router's IP address(es)? [closed]
What is the IP address(es) of the router in my picture?
In my picture, you can see that I have question marks next to the router's interfaces, because I'm not sure if those are right. Can someone ...
- 121
0
votes
1
answer
411
views
What are the disadvantages of re-using the same IP scope in multiple subnets? [closed]
We're designing a somewhat large system that we're not really qualified to design. It will be something like a campus: one main, large network, with about 20 sub-networks that are like departments ...
- 311
0
votes
1
answer
1k
views
Can I use a subnet to limit access to resources?
I have a somewhat limited knowledge of network configuration, but would like to achieve something like the following:
have two work areas set up
the "admin" work area happens to be physically ...
- 185
0
votes
1
answer
415
views
Using a CIDR range as a Routed Subnet?
I have a /29 subnet assigned by my ISP, with an SonicWALL office router and a Cisco voice router hooked up to a 'net-rail' of sorts with untagged VLAN switch ports connecting my ISP router's output ...
- 9,680
0
votes
1
answer
294
views
Block IPs in Local Security Policy
What would be the most efficient way of blocking a list of IPs in Windows 2008's Local Security Policy?
Ideally, I would want to block the subnet that the IPs belong to. What IP subnets should I be ...
- 145
0
votes
2
answers
156
views
Is auto-detection of routers on the local network possible?
Suppose one has configured a bog standard Ethernet connection - there is an IPv4 address, a subnet specification, a default route, even nameservers in resolv.conf, static routes everywhere - is it ...
- 1
0
votes
1
answer
2k
views
Public subnet configuration on a Cisco ASA 5520
I'm trying to set up a Cisco ASA 5520 as the main entry point for our datacenter setup.
This setup includes:
Three private networks (management, SAN and backup) that are used in a cloud server ...
- 147
0
votes
1
answer
390
views
How many assignable addresses are needed for a router-to-router connection?
I have an address zone (let's say 150.41.0.0/16) and I want to subnet it optimally using VLSM. I have a number of VLANs, each with a minimum number of needed addresses, and a couple of router-to-...
- 153
0
votes
2
answers
310
views
What's a subnet mask? [duplicate]
Possible Duplicate:
How does Subnetting Work?
Subnet mask is usually something like 255.255.255.0. And until now, its the field I usually ignore.
I am trying to read the wikipedia entry, but ...
- 798
0
votes
2
answers
962
views
2 subnets off of 1 PC with 2 NICs
I have a general setup I'd like to do with some IP cameras. This seems like it will work but I think I may be missing something. Our system consists of a video recorder PC connected to a switch which ...
- 277
0
votes
1
answer
257
views
IPv6 - Are the last 16 bits of the network ID always reserved for subnetting?
I was reading about IPv6 address structure and it has two portions one for the network (Network portion/Network ID) and another for host (Interface ID/Node Part) something like IPv4 has regardless of ...
- 5
0
votes
1
answer
841
views
Allow communication between two networks through two routers
I have the following setup
I would like Device A to be able to communicate with device B and vice versa. I have setup static routing on Router A, and Router B as follows:
Router A: 192.168.1.0/24 ...
- 123
0
votes
1
answer
8k
views
How to link two networks with different IP ranges
I've got a network on ip range 192.168.0.X. It has a router with an internal IP on this range that lets it talk to the outside world.
If I create a new network on ip range 192.168.1.X. How can I get ...
- 121
0
votes
3
answers
2k
views
Do network acls block inter-subnet traffic as well?
I have VMs placed in different AZs on AWS. In order to be able to do this, you need a subnet in each AZ.
If I'm creating a network acl for the entire setup (ie to be associated with all subnets) do I ...
- 113