Access locally hosted website from LAN?

I have a Ubuntu web server running locally on 192.168.0.x. I have port forwarded my public IP to to this local IP. I have configured my DNS servers to point to my public IP, and now the web server is accessible through domain example.com.

However, when I want to access example.com on a local computer on the network, it doesn't work. Of course, the server is always accessible through 192.168.0.x, but I need for it to be accessible through the domain.

Is there any way I could get this to work?

IPV4 address waiting list

Hi Redditor’s,

Giving that the ripe is running out of IPV4 address space, is there anyway that I can access the Non-allocated waiting to list to understand where I would be in the queue?

Any help and advice would be great!

Thanks in advance

Simulating connectivity issues

I work for a software company that wants the ability to simulate network errors. For example, we might want to block traffic on specific ports (eg 1883) for certain IP-addresses to test the system under different scenarios. We are testing a closed system so the "blocking-functionality" is only needed on one single LAN. No changes to incoming or outgoing traffic. Current gear is Unifi combined with some Cisco Firewalls.

How would you go about this? A completely separate piece of gear that developers can have unlimited access to? Any tips would be much appreciated!

Why is my flask website thats hosted on Virtualbox unreachable to other devices outside of network?

i made a flask website on the virtualbox Virtual machine that i can access on the virtual machine but on other computers i cannot access the website because it says "website is unreachable" ive tried many different ip addressess still nothing is working, any clues why and any solutions? maybe i have to do port forwarding? or i have to allow trafffic of a certain port coz its blocked? i dont know alot about networks.

Also whenever i run my flask website, i notice instead of running at "0.0.0.0" it runs at "10.0.2.15", which is strange coz i set it to run "0.0.0.0" in the code of the flask app, so coz its a virtual machine for some reason its running at "10.0.2.15" which i think is the guest ip address of the virtual machine so maybe thats why the website aint accessible outside the virtual machine.

Nornir multiple different task concurrency?

Nornir looks great for concurrently running the same command to your selection of inventory devices but what about having the same concurrency but with different tasks for each device? I take a stack of different tasks meant for different switches. Does that mean I'd have to implement threading on top of nornir tasks?

Example:

I want switch 192.168.150.10 to set port te0/0 - down and switch 192.168.150.20 to set port te0/7 up. Those are two different tasks that I would like to run concurrently.

Reliable repeater solutions?

So a client needs a solution for office/storage containers. There should be some sort of antenna or repeater, no big range required, which would be on the outstide (because of Faraday cage effect obviously), receiving an external Wifi network, and an internal part which would be repeating the network on the inside.

Also, the parts need to be very reliable. Price is no issue.

Any suggestions?

Router swap for transit peer

I've inherited responsibility for a small network that resells fiber connections for some local business and commercial customers. The previous network guy just up and left one day and cannot be contacted. Naturally, documentation is sparse. I've been tasked with cleaning up and rebuilding the network to prepare for a new hire or onboard.

My last task is to replace the core router, which advertises the local public network to the transit peer. I do not have access to this router nor do I have access to the account from the transit provider as the previous guy was the only person named. The company is working on that.

In the meantime, my plan is to replace the router with something I can access. I have enough information to mirror the BGP configuration to a new device, mostly. I was given the port IPs, peer IP/gateway, subnets.

I don't have the AS numbers for the local network or the peer listed. I've got the local AS from a quick WHOIS but the peer IP is a private address. If I do a WHOIS on the next hop IP, is it safe to assume that is the target AS?

Should I just wait until I can confirm the peering info with the ISP? I'm not really expecting that to happen any time soon.

***Seeking SFP+/QSFP/CFP2 EEPROM Programming Solution***

Seeking a solution for read/write EEPROM info to CFP2 devices.

So far I have only encountered solutions with DC powered boards and software that takes 20-30 min to perform a change on a single pluggable.

FWIW I also do a lot of SFP+/QSFP programming and currently use Elnec and find myself frequently longing for an easier solution. Even being able to copy/paste into the "view/edit" part of the software would greatly increase productivity!

Cisco SDA - Custom Config on Edge Node?

Hello folks,

We've got a site with a switch stack that's part of our SDA deployment, but only over a single 10G link. the second 10G link is on it's way, but is a few months away from being installed.

As a backup, we're looking at getting a 5G link to connect back to the VPN in the main site, but there's no way I can find in the SDA to make a backup link with a floating static, and the remote site is part of the shared address pool for the SDA.

Could I manually build a VRF and VLAN's on the Edge stack, so that in the event of the main 10G link dropping, I could move VLAN's manually (by going in over the VPN) and have the edge users connected to the new vrf and connect through the VPN.

Has anyone attempted anything like that? Will DNAC be rather upset that I've put that sort of config on an edge switch? Or will DNAC not care because it's not its config?

Best,

CC

Looking for a canadian supplier to replace CDW

It's taken over a week to get branded optics; like I couldn't get fs.com stuff tomorrow. Need Cisco, Dell, Arista, Fortinet, and Palo Alto (and Ubiquity, but let's not talk about that....) in a one stop shop, with access to vendor SE's on the table too. Softchoice comes to mind? Anyone else you want to recommend?

How to route to remote VPN machines by hostname?

I have two sites connected peer-to-peer through OpenVPN. How can I access machines at the remote site using their hostnames? For example I would like to access service1.siteB.domain.com while I am at siteA. Somehow the local DNS at siteA needs to know about the DNS table at siteB. I am able to access all machines by IP.

10G Connection to Provider not working

I have a 2Gb Layer 2 circuit that I am picking up in a carrier hotel from a Data Center provider in another market. I have elected to have this handed off as a 10G Connection instead of a 2x1G LAG to save on cross-connect costs and to be able to grow this circuit without physical changes in the future.

The issue that I am having is that I can't get the darn thing to come up! I have multiple 10G circuits from other providers and none of the others are having issues. The optics are 10G-LR (10KM) on either side. I have verified that I have light, and the provider has light. I am terminating the Circuit on a Nexus93180-YC FX with 10G-LR optics from FS.com. I have done loopback tests on the optic as well as patched the optic to another optic on a different switch to make sure that it would come up, and the optics checked out, no issue. I also hard-coded speed and duplex, however the Nexus platform does not allow the "no negotiate auto" command at 10GB. I have good light levels from the Provider (-5db) and the provider has the same levels. I have had the Meet-me-room manager clean all cables and bulkheads. The Provider was originally using FS.com optics and has now switched to Cisco Genuine. The PE router is giving a "far-end error" message (I believe this is an ASR 9K Chassis?) They have also changed optics, ports, etc to no avail. To just see if I could get the circuit to come up, I changed the optics on my side and the PE side down to 1Gb and the circuit came up with no issue (Both Cisco Genuine). Is there something blatantly obvious that I am missing? I can post sanitized configs from both the CE and PE devices if that would help connect the dots.

TIA

App suggestion for wireless network optimization

Guys is there any application for network optimization? plz suggest me any (preferably) iPhone app (if there is any) for wireless network optimization. I am asked to install few WAPs in new office and then optimize the coverage.

Networking upgrade to 10gb SMB 250 users.

Sysadmin here responsible for a site with 250 end users and about 300 endpoints in total. Looking for advice on a core switch upgrade…

Currently I have 8x 2540 SFP+ (10gbe capable) edge switches fed into a stacked HP 2920 core switch. All trunks are 1GB uplinks cat6 ethernet. I use this switch for routing / ACLs but I’m probably going to take the opportunity to offload VLAN routing to our firewall.

Our network is exclusively 1gb and is in dire need of upgrading to 10GB. I am interested to know what people would recommend as a ‘core switch’ replacement. I think 2x HP 3810 16SFP+ would be an ideal choice however my boss has severely underestimated the cost of the project without input from his technical team. This will easily be circa £15k – that’s another matter.

Cisco Nexus Multiple VRFs to share same MPLS uplink

We're looking to run multiple VRFs at one location on our Nexus to keep logical separation between two separate server farms.

Each server farm has a dedicated Firewall + internet connection but share the same Core Nexus switch. The idea being that we can maintain separate routing instances for each Farm.

The catch is we need both VRFs to access the same uplink to our MPLS.

MPLS comes in on a single Fiber plugged into the Nexus Directly.

Since the MPLS comes into a single VLAN, I can't make that VLAN a part of both VRFs?

I can make separate virtual IPs and OSPF instances for the 2 VRFs easily enough, but I need an elegant way to split the MPLS feed between both VRFs.

Designing VLANS and subnetting (FOR SCHOOL PROJECT)

I could use some help with a few of the VLANs I need to design. I need to subnet a class C network -192.168.234.0/24 I just need to figure out how to get Number of Hosts, CIDR, and IP address for two VLANS: First -8 computers and two printers Second -3 servers with 3 NICs each

Even some resources that would help me learn to solve this would be amazing

EPL Link working only 1 way

Hello folks,

I've been working for a while on this configuration but I can't seem to make it work somehow. I am totally alone trying to make it work and I need help. Thanks in advance for your input. Basically, EPL is like a very long cable and it seemed easy to setup but i'm stuck. Here is the topology:https://imgur.com/gallery/aPKyeJQ

On site B, I can reach a server in the 10.37.20.0/24 network from the 192.168.100.0/24 network but I can't reach anything from site A to anything in site B. There's an address object group including the lan networks from site A including 10.37.100.0/29. There's also a routing policy from X0 to X3.

Even though I looked through the Meraki documentation, I haven't found anything related to an EPL connection or routing to non-meraki router. There are mostly MPLS or VPN walkthrough. There's a routing subnet from the L3 switch MS250-48. If I create a DHCP server in the 10.37.100.0/29 network and plug my PC in in site B, I get an dhcp IP and can reach everything in the site A. It seems the rest of the Routing configuration that I found can be done on the firewall side in "adressing and VLANS" but in order to maximize the bandwidth I'd like not to use the MX if possible.

So, what I am missing? any idea is welcome!

Equipment woes

My cisco switch orders from August just got pushed back again, now to February.

I know with the chip shortage, this is probably affecting everyone but is anyone having luck with aruba or juniper orders? I've been itching for an excuse to change our standard.

Ubiquiti edgeswitch dhcp conflict issue with ping and host declined errors

We have an edgeswitch at one of our locations that runs the dhcp server. And almost 2/3 of the pool is coming back with a conflict of mostly "ping" or sometimes "host declined"

Any help would be appreciated...I am stumped on why this is happening.

Traceroute % Loss

When I perform a trace route to a host behind the firewall (FortiGate 601E)

- i see a 75 % loss at hop 19 which is the external port of the firewall . Should I be concerned about this ?

19.|-- 203.126.222.xxx 75.0% 4 260.6 260.6 260.6 260.6 0.0

20.|-- 203.126.222.yyy 0.0% 4 259.1 262.1 259.1 267.2 3.6

However, if I traceroute only up to the firewall external port, I see 0% loss.

17.|-- 203.126.222.xxx 0.0% 4 263.5 262.5 262.0 263.5 0.7