Questions tagged [router]
A device that connects two or more networks and is capable of forwarding data packets to a destination based on information contained within a packet and internal routing tables.
2,042
questions
2
votes
1
answer
111
views
Port forwarding fails with two DHCP Servers/routers on the same network
TL;DR I have two routers and a switch, and have forwarded port 80 on both routers to the switch, but depending on which router gives the switch its IP, it'll have that as its default gateway, and I ...
- 141
-3
votes
0
answers
24
views
Lan to wan setup [migrated]
I did factory reset on my second router by accident and since than I’m having issues sometimes. I would appreciate if someone can help me with router configuration, all I know is that first routers ...
0
votes
3
answers
123
views
Zscaler as a router
Is it possible to install zscaler on virtual machine (e.g. linux), and use that machine for accessing only few hostnames? I would point other machines to go via this virtual machine only for those few ...
0
votes
0
answers
18
views
TCP session refused immediately after accepting it
Host_A tries to send some data to Host_B over TCP. Host_B is listening on port 4712. Host_A is a remote PC connected on a dedicated WAN. Host_B is a local embedded device based on embOS OS, connected ...
- 1
0
votes
1
answer
65
views
If I change my router's IP address, why do all client devices assume it's at 192.168.1.1? [closed]
I've decided to set my router at some non "1.1" IP address.
I have even created a QR code for connecting to the Wi-Fi.
The problem is, it looks most devices assume that if the DNS address is ...
- 157
0
votes
0
answers
25
views
RouterOS 7, how to fair-share per interface
I'm configuring fiber for my office. Every floor is rented by someone, and I want to share the internet fairly. We've got one incoming 1Gbps fiber link, into a modem, followed by a Mikrotik router. ...
0
votes
1
answer
80
views
Internal network drops connection to our own locally hosted web server on a disjointed network
In time I have my internal network drops all connections to my locally hosted website. After rebooting the web server all internal connections to the website works again, but it is only a matter of ...
- 264
0
votes
1
answer
49
views
How to tell if a switch is forwarding LLDP traffic
How can I test if a switch is forwarding LLDP traffic?
(an engineer for my router's company said that most switches do, and can cause problems for their router, so I'm trying to chase this; another ...
- 1
0
votes
0
answers
67
views
performance issue when linux(ubuntu) work as router with ip_forwarding enable
I'm running a test with this topo: tester---(port1)ubuntu_linux(port2)----tester. I enabled ip_forwarding in ubuntu_linux by : echo 1 > /proc/sys/net/ipv4/ip_forward
The tester is trying to find ...
- 1
0
votes
0
answers
41
views
Arista ceos dnsmasq
I'm using Arista cEOS 4.29.2F and I'm trying to use the dns proxy that this device allow.
However, when I do systemctl status dnsmasq on the Arista's bash, its output is:
● dnsmasq.service - SYSV: ...
2
votes
2
answers
2k
views
Why I cannot access iDRAC9 remotely?
I have a Dell PowerEdge T350 with an iDRAC9 Basic. The server is connected to a switch which is connected to a router upstream which is connected to the internet. Very simple. Both the server's NIC1 ...
- 277
0
votes
0
answers
59
views
Port Forwarding on Huawei E5885LS-93A doesn't work
My home network is composed of a 4G router (Huawei E5885LS-93A) and three Ubiquiti Access Points (UAP-AC-M).
Within my network I run ZoneMinder on a Raspberry Pi 4.
From within my network I can just ...
0
votes
1
answer
274
views
How to setup public ip for proxmox
I have an interesting question.
We have in company proxmox VE with public 46.xx.xx.xx/29 and private IP subnets. Proxmox hasn't got public ip and is connected on interaface vmbr0 to router with subnet ...
- 13
0
votes
0
answers
220
views
wireguard VPN configuration
I have a wireguard vpn configuration on my router, the ports are open and the server configuration I think is correct.
however when I want to connect a client, it only shows me this error:
[TUN] [...
- 1
0
votes
0
answers
24
views
Shebang = how to verify source/target file mounted via --bind
On a router (busybox) I'm limited to shebang. On devices like these relaying on squashfs and flash storage it's common practice to mount --bind files from USB/CIFS/JFFS onto a file provided by the ...
- 105
0
votes
0
answers
19
views
connecting cisco 931 to Palo Alto Global Connect VPN
I'm trying to connect a cisco 931 (with VPN license enabled) to a Palo Alto (PA) Global Connect VPN Server by trying to create an IPSec VPN Tunnel.
I feel I'm missing something here:
The following ...
- 50
0
votes
1
answer
2k
views
How to NAT-route network to Tailscale?
EDIT: I already spent 3 days going through different possible ways of handling this and settled on iptables. This is like the biggest-kept secret to me. No matter how much I read, I feel like I'm ...
- 143
0
votes
0
answers
133
views
AWS: Ping between multiple namespaces in seperated EC2 Instance
I am encountering an issue where I am unable to receive a response when attempting to ping from a namespace located within a public EC2 instance to a private one. To better illustrate my situation, I ...
- 101
0
votes
1
answer
78
views
Self hosting/Colocation multiple VMs with public IP addresses on single server
I have a single server that is running some VMs. I want each of these VMs to be accessed through public IP addresses correspondingly. I'm looking into hosting the server on my own and get a block of ...
- 101
0
votes
0
answers
42
views
Configuring Routers using IRRToolset/IRR Power Tools
Recently, I've started configuring routers using irrpt.
It offers the features I require, which are described in the section under "Purpose" (https://github.com/6connect/irrpt#purpose).
But ...
- 1
0
votes
1
answer
569
views
Browsers can't make connection to my server without port 80 open
I have a server where NGINX is running as a reverse proxy. My configuration works fine when I leave ports 80 and 443 open on my router. When I only keep 443 on it, I have "Connection timed out&...
- 3
0
votes
0
answers
372
views
How to configure DHCP and Subnet on VODAFONE SMART ROUTER 3?
I intend to have for my internal network the submask /27
The IP of my Vodafone Smart Router 3 is 192.168.1.1 and the factory default submask is /24
This will give me 8 subnets
192.168.1.0 192.168....
0
votes
2
answers
111
views
Load balance the Load balancer
I am looking to get load balancing for my load balancer.
We are looking to create a fully HA network.
All of our servers are redundant, the databases are redundant, but above them is a single server ...
- 101
-1
votes
1
answer
302
views
remove fortigate account from fortinet router
i have fortigate 60E that was register on computing company ,
now this company has been closed and already passed more then 3 years ,
im trying to unregister the fortiget its ask for the password of ...
- 11
0
votes
0
answers
91
views
Access bridge Network from Router's Network and vice versa
My ISP provided an ONT cum wireless router device that connects to internet via PPPoE.
However I decided to use the provided device just as a modem and bridge it to a high speed wireless router ...
- 1
0
votes
1
answer
389
views
How to extend amount of VLAN's via external Managed Switch on Linksys WRT Router on OpenWRT 21
Goal is to create more than 4 VLAN's leveraging external ports on Managed Switch all under control of the Main Router (Linksys WRT with 4 built-in switch-ports) running OpenWRT 21.
Linksys Managed ...
- 1
0
votes
0
answers
74
views
Setup new router with SQM - Buffer Bloating solution
Scenario. I'm in Tbilisi, Georgia.
I have very high ping to EU servers(100ms+) plus a huge buffer bloating problem, this test gave me the F rank: https://www.waveform.com/tools/bufferbloat
I use an ...
- 1
0
votes
0
answers
161
views
Couldn't reach the virtual machine behind NAT via the white address
I've emulated the simple network in my VMware environment:
The host1 is in the internal network 192.186.0.0/24, the host2 is in my home network 192.168.0.0/24.
The router has two net adapters in both ...
0
votes
1
answer
453
views
How to setup RRAS as IPv6 Router and enable Router Advertisement
I have a Windows Server running on the local network acting as the router and VPN server. It has an IPv4 address with NAT enabled to provide internet access to devices on the network.
It also has a ...
- 101
1
vote
1
answer
271
views
Cannot access website in LAN. NAT Hairpinning in nftables
I am trying to get NAT hairpinning working on my router. I cannot access my local website host on my LAN (192.168.1.3). I am using nftables with the following config:
enp1s0 = WAN
enp2s0 = LAN
#!/sbin/...
0
votes
0
answers
514
views
WireGuard VPN client does not work behind FritzBox!Gastzugang. Does FritzBox!Gastzugang ship with a UDP filter?
While staying with some older relatives in Germany, I discovered my Wireguard client could not complete its handshake with a Wireguard server I'd stood up.
I thought the problem was likely me and my ...
- 101
0
votes
1
answer
336
views
Can't configure VPN on tp-link router using PSK
I've bought a VPS server and configured stronswan VPN. I was able to configure VPN on my Windows laptop(usinf certificate provided by Strongswan Web UI) and my android smartphon(configuration is ...
- 101
1
vote
3
answers
602
views
Internet access problems on subnet
Hello Server Fault friends!
I have a question that I believe should be easy to answer for someone who really gets how a typical subnet should be configured with a router such as PFSense.
My Problem: I ...
- 129
1
vote
0
answers
284
views
Windows lost server connection while transferring files via Samba
I have a Ubuntu 22.04.1 server with Samba installed to allow other PC in the local network to upload/download files, there are 2 Windows clients (Windows 10 & 11), and they both are ok to connect ...
- 111
0
votes
0
answers
230
views
How to SSH into a computer connected to a modem while connected to a router that's bridged to that modem?
I have a Modem/Router (NAT) that authenticates to my ISP's fiber optic cable. This modem has one ethernet cable connected to my Computer and another to the WAN port of a Wi-Fi router.
The Router is ...
- 101
-1
votes
1
answer
144
views
Please explain this traceroute
What might cause the middle two RTT to timeout. This happens every time. Users are reporting slow network access from the remote site. We have contacted Meraki and they have not found anything wrong. ...
- 1
1
vote
0
answers
103
views
Unable to ping through router switch router
## Question
Why in firewall_2 routing table rip address is not showing like router_b?
As I done Rip routing In Firewall_2 as shown in the right side image
rip:
192.168.1.0
192.168.2.0
209.165.200.0
...
- 13
-2
votes
1
answer
180
views
Can two servers talk to each other via TCP by this configuration? [duplicate]
This is an interview question:
There are two servers on Rank A, setup the network on the two hosts by following configuration:
Server A: ifconfig eth0 10.10.15.129 netmask 255.255.255.0 up route add ...
- 1
1
vote
1
answer
380
views
Blocking SSH access from WAN side of CISCO 890 to management plane
I've been round about the houses with this one for days, i've not found a solution yet that works. I haven't found a way to block the HTTP access to the management plane either, i had to give up and ...
- 121
0
votes
2
answers
422
views
Custom time zone for Wifi connected devices?
I have Wifi router and server that a number of devices connect to on a ship. The devices are both mobile(iOS, Android) and laptops. Connections are so that the devices can only access a specific ...
- 191
0
votes
1
answer
512
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
0
answers
342
views
Does DDNS work within an ISP subnet?
I'm trying to host a web server through a Raspberry PI 4, but found some problems in the final steps of my configuration. What I did is the following:
Install Nginx.
Install Node to host my site (I'm ...
-1
votes
1
answer
199
views
How can I download the cisco running config to my C drive's folder?
I am going to download the running config from the cisco router.
I have tried the following command, but it needs to change the account's privilege level to 15 for downloading the running config. I ...
0
votes
1
answer
287
views
running openwrt in virtualbox with 2 network adapters- a host only adapter and bridged adapter, but only host-only adapter shows
following this video to try and set up a virtual network for me to practice hacking, but only the host-only adapter shows (I am currently 17 minutes into the video).
uci show network
ip addr
/etc/...
0
votes
1
answer
135
views
Mikrotik configuration lost after electricity went off
Because of electric went off the miktrotik router lost operation system ..
The operation System went down ..
I did backup to the router "ccr1009"
After that everything went well but I got ...
- 1
1
vote
0
answers
651
views
Blocking forwarded traffic with OpenWrt fw3 firewall
I can't find out how to create a fw3 rule which does what I want (block all traffic from 192.168.1.119). I have this in /etc/config/firewall
config rule
option ...
- 31
0
votes
0
answers
988
views
Enalble Writable FTP or Samba on a ZTE Router(Shipped as Airtel Nokia Router)
I have enabled ftp as well as Samba service for the usb device connected to my router. However, both are readonly.
I see that tplink routers can be configured to use ftp in writeable mode as well - ...
0
votes
0
answers
892
views
Mikrotik CCR1009 ROS 7 dual WAN configuration
i have a CCR1009 (ROS 7.2.3) configured with the COMBO port as WAN_1 and the eth1 to eth5 ports as LAN, VOIP, and 3 SERVER with different subnets.
The ISP is fastweb (mixed fiber 100/100) which ...
- 1
1
vote
1
answer
495
views
WG3526 modem can't connect to 4G/LTE with OpenWRT
I have a client with a WG3526 4G/LTE modem with a sim card slot.
I had to change the firmware so I can get detailed bandwidth usage.
My issue is since I installed the generic version of OpenWRT, the ...
- 61
0
votes
1
answer
107
views
Is ingress filtering described in RFC2827 implemented in most routers? How does such implementation look like?
RFC 2827 describes the idea of ingress filtering that is meant to
deal with DOS attacks that utilize IP spoofing:
An input traffic filter on the ingress (input) link of "router 2", which ...
- 105