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.

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11 views

mail server behind ubuntu iptables router [duplicate]

I want to run a mailserver behind an iptables router. I set up the router with ip-forwarding on Ubuntu 16.04 Server edition. I enabled ip-forwarding in /etc/sysctl.conf . I have set net.ipv4....
0
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25 views

smtp-request behind iptables-router not working

I set up a router with ip-forwarding on Ubuntu 16.04 Server edition. I enabled ip-forwarding in /etc/sysctl.conf . I have set net.ipv4.ip_forward=1 and executed sysctl -p /etc/sysctl.conf I used ...
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1answer
23 views

Access shared files between two vlans using a local server

I am very new to networking. I have two VLANs, and want to read and transfer shared files between them. I cannot add a new router. I have access to a server which can be accessed by both the VLANs ...
2
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1answer
40 views

Routing external traffic to a backup datacenter

I'm planning a backup data center and want all external hosts to transparently connect to DC2 if DC1 goes down. Assume I have public ip 1.1.1.1 at DC1, and public ip 2.2.2.2 at DC2. Obviously if ...
1
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1answer
40 views

UDP multicast send/receive: Routing or socat issues?

I'm using 'socat' on Linux Centos 7 to diagnose some problems. Server and clients are all linux centos7, they all have multiple interfaces. Server 10.1.1.1 is on Switch 1, 10.1.1.2 is on Switch 2. ...
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0answers
9 views

Freesco cant ping other machines [closed]

Im having some trouble with setting up Freesco on my VMworkstation, hoping someone can help.. I have a freesco VM with 3 NICS NIC 1 - Bridged with host 192.168.0.2 255.255.255.0 GW 192.168.0.1 (my ...
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0answers
12 views

Wifi router unable to assign reserved IP when connected to network [closed]

I have a device connected to wifi router. When router is not connected to any network or Internet the device gets connected to router on reserved IP and transmits data. However when router is ...
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1answer
19 views

Issues with DMZ on Fortigate 90D, second router can't reach internet

I am having issues setting up a DMZ port on my Firewall (hardware router). I am also assuming this belongs in Super User, as it seems like a basic DMZ setup. Here is the setup: I have a Fortigate 90D ...
0
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0answers
2 views

Tomato router with separate DHCP server [migrated]

I currently have a Netgear R7000 (running Tomato) acting as my main router (DHCP and DNS) and access point. Because of how my house is laid out, the modem and router are apart from each other (...
0
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0answers
21 views

Sonicwall inter WAN interface communication

I have the TZ105 sonicwall and X0 is LAN and the rest 4 interfaces are 4 different ISP connections through 4 ISP routers respectively. Basically I cannot get any device connected to an ISP router to ...
0
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0answers
3 views

How to fix “Possible PS or DA” issue at WiFi router? [migrated]

I have a home wifi network driven by Huawei HG232f. Couple times a day it's unavailable and I have to reboot router. I'n using ubuntu 14.04. While researching a problem I found such details: While ...
0
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0answers
10 views

Are MAC addresses simple unique identifiers, or are there rules for categorizing MAC addresses?

Background Context: I've been scratching my head over an issue with my router picking up multiple VMs as a single device. I'm able to reserve ips for the separate MAC addresses, and as far as I'm ...
1
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0answers
24 views

Restrict internet access duration per day on router? [closed]

I want to restrict internet access duration per day per user on my router. The router is set up with Debian and functions as a wlan access-point with the help of HOSTAPD. I don't want to only restrict ...
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1answer
28 views

What kind of emulator can i use to learn Cisco Router Configuration? [closed]

I am going through my CCNA materials. I came across this one topic called configuring the router. Now, i don't have a Cisco Router but i still want to go through the commands and see the results live. ...
0
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0answers
27 views

Redirect TCP traffic from interface wlan0 (AP mode) to localhost:8080?

Here I want to redirect all traffic heading to all_IP:80 from wlan0 ( AP mode, as a hotspot, in a router) to my local TCP listener, listening on localhost:8080 OS : debian I used these command to do ...
0
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0answers
10 views

Diagnosing the source of improper ARP requests on WAN side of Linux firewall/router

The kernel log on a Linux firewall/router I administer recently started filling with messages like these: net_ratelimit: 405 callbacks suppressed neighbour: arp_cache: neighbor table overflow! ...
0
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0answers
40 views

How to do Multi WAN routing based on latency/distance to the target IP

I have two different internet connections available (DSL & LTE), and I'm building a router to "combine" those. What I would like to achieve: The routing should happen based on the latency or ...
0
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1answer
33 views

Convert a LAN port to WAN port [closed]

I have D-Link DIR-600M N-Modem. A day ago the WAN port got damaged due to lightning but the other ports still work. I can connect to the modem but the WAN port does not respond. Is there any way I ...
0
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2answers
39 views

How does a router without QoS decide bandwidth distribution?

I've been searching for this and from what little I've found modern day routers try to balance internet bandwidth as fairly as possible. (I'm using a Asus AC66U myself) For example, if I have a 100 ...
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1answer
39 views

I can't access my home server using my public IP from local network [closed]

I've seen this question I can't access my public IP from local network but I think it's different I have a Vodafone Spain router from Huawei, model HG253sV2. In my local network I setup a HTTP ...
0
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1answer
18 views

Cannot access D-Link DES 3200-10 after resetting account

I've forgot my password and after googling I've found that in recovery mode I can reset my account. Connected to Switch using console port (VT100+ Keyboard compatible) and pressed Shift+6. I accessed ...
0
votes
1answer
19 views

Looking to mimic Netgear Nighthawk AC1900 Router Settings in a TP-Link MR3040 Router [closed]

I have a Netgear Nighthawk AC1900 Router that is setup and working correctly with a network that has two Wifi cameras and a Linux PC acting as a server. Static IP addresses have been assigned to both ...
0
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0answers
38 views

The Chrome browser can sometimes not reach Google servers with a new router

I have an odd problem which I haven't been able to even find mentioned elsewhere. A while back, I switched out the Wifi access points as well as the router for a small office network. After I did this,...
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0answers
13 views

Route between E1 devices

I have this topology and I need to configure routing between my CISCO 2911 routers to connect my devices, that are using E1 without any timeslots separation.
0
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1answer
77 views

Windows 7 PCs in a domain - time source keeps changing

I need help figuring out why the time source on some PCs keeps changing. Right now they're on Local CMOS clock. If I do w32tm /config /syncfromflags:domhier /update net stop w32time net start ...
0
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2answers
83 views

Configuration to connect an Acess Point into a pfSense Network

At the moment I have an wired network provided by my pfSense router. I bought an Access point (tl-wa801nd access point), in order to have a wireless network in my wired network. In my computer host, I ...
0
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1answer
33 views

Is it possible to set up a wifi router with no internet?

Is it possible to use a standard Linksys-type router and set up an internet-free wireless network? Example: Devices can see "My Network" and connect to it. While connected, calls to the internet ...
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1answer
36 views

wifi only works when lan is connected [closed]

Hold tight, this is a strange one... I have a board with two network adapters, one lan and one wifi, each one properly configured and has its own ip address on the same network. Whenever they're ...
0
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0answers
23 views

ftp server not responding after log in

So my problem is that I have a FTP server running on my NAS behind a router. When trying to log in through the NAS 192.168.1.X address I can connect and list the files but when accessing from my ...
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votes
1answer
23 views

Do Wireless Routers with a USB port for 3G/4G USB modem support normal file sharing? [closed]

I'm looking forward to buying a wireless router with a USB port, so that I can share my 1 TB external Hard Drive over Wi-Fi among my devices. I came across one such router, TP-Link 3G/4G Wireless N ...
0
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1answer
39 views

Using an LTE Dongle on a router's USB port

I know there are routers which support LTE/3G dongles (like the FRITZ!box by AVM). But if I have got a router, which officially does not suppport these dongles, but has got USB ports for NAT storage, ...
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0answers
20 views

Draytek Vigor 2830n WAN connection dropouts

For the last two weeks we have been experiencing terrible connections speeds. When running a speed test it normally starts off OK at around 15Mbps but then drops to 0.7Mbs or below making working ...
0
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1answer
55 views

Cisco 887VA router ADSL configuration

I am attempting to setup a Cisco 887VA to connect out to the internet via a basic ADSL connection. I have configured it to the best of my ability but its the first one I've ever done and I think I may ...
-1
votes
1answer
74 views

simple routing don't work under debian jessie

I'm trying to set up simple enogh system with 3 virtual debian jessie machines: first connected to second and second connected to third. I want first one to be able ping third one. To achieve this, I'...
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1answer
35 views

Unable to SSH to AWS on home network?

I am not exactly sure if this is the right place. I have an AWS EC2 instance which I am trying to access using putty on windows 7. I have been doing it using my phone hotspot successfully. But it ...
0
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2answers
29 views

Sonicwall firewall router dhcp server stops working intermittently

I just bought a Sonicwall SOHO which is the new model that replace TZ105, TZ 205 series. The network stops working intermittently. The whole network is down after every 30~70 minutes of uptime, no ...
0
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0answers
31 views

Set-up VPN using DD-WRT router

I'm trying to set-up a VPN with a DD-WRT router in a Windows 2012 environment. I followed the steps from DD-WRT wiki 2, but I can't manage a connection. Firmware: DD-WRT v3.0-r28788 std (01/13/16) ...
0
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1answer
25 views

Cisco 1921, SMTP, and NAT on multiple Exchange Servers

In a LAN environment, I have 3 exchange servers that have been deployed for high availability and failover in case one of the 3 servers becomes unavailable. Currently, my NAT settings only send ...
0
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0answers
24 views

Can't reach centos server after “Multicast listener report” IPV6

I ran into a problem that occurs only on a few servers. Every 5-6 minutes I lose connection to the server, and it get backs after a few minutes. In most cases it's a VM that is not reachable while ...
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3answers
38 views

Expand wlan with a wlan router or access point [closed]

My wish is to expand the WLAN network, because of aborted connections. That means, the "central" router gives the internet connection in the LAN and the other router/access point uses the LAN ...
0
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1answer
61 views

additional public IP and local network

Currently we have router A that does all the routing/firewalling/forwarding/dhcp/... services. It also forwards ports 80 and 443 to server on our local network. We need second web server(not as a ...
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1answer
61 views

Building router with one ethernet interface

Good day! I have 2 servers in datacenter and I want to use one of them as router for another instead of default gateway provided by DC. Both servers have one ethernet interface called 'eth0' with ...
0
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0answers
77 views

dnsmasq use LAN ip for resolvable LAN hosts, forward to external DNS otherwise?

This may be a duplicate but I was unable to find the exact answer, so I apologize in advance if it is. I have a dnsmasq instance running on my router, as well as some hosts which are accessible on ...
0
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0answers
60 views

create a PPTP VPN server to act same as PureVPN PPTP server?

I'm new in networking. Our ISPs are providing us with private IP addresses so port forwarding is not possible, They are offering fixed IP addresses but with extremely high price so the only option is ...
1
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1answer
49 views

Operating Temperature of Cisco routers

I am managing a small server room containing different pieces of networking equipment e.g. cisco3900, paloalto appliance, pc routers, various switches. The issue is that our server room has been ...
1
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1answer
120 views

How to optimize throughput on a linux NAT/router?

I am trying to use an old Fujitsi RX300S2, with a quad core Intel Xeon CPU @2.80GHz as a Gitabit NAT router, it has a dual gigabit NIC on board over PCI-X. The router will also forward multicast ...
0
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1answer
17 views

SafeNet Sentinel RMS server needs to be pinged before it works (routed across VLANs)

I have 2 separate CAD programs that use the Safenet Sentinel RMS Server (Aladdin) to check the license. After boot, they cannot find the license server. The license server is configured using its ip ...
1
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1answer
83 views

Slow DNS response

Our network has a NetGear SRX5308 Firewall / Router with no local DNS server. We have an external webserver one of our applications connects to and sometimes there is a delay in the resolution of the ...
0
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1answer
105 views

Cannot connect to internet after a power cut yesterday

I work at a small company, we have set up our LAN using an ASUS RT-N18U. We are in a small office as part of a business park, our network comes in over wire, as part of a package supplied by the ...
0
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3answers
70 views

Configure small LAN to WAN network

I want to setup a small LAN that can connect to Internet via my ISP's router (I have only one open port on my ISP's router and 6 public IPs). On my side, I have an Ubiquity Router that I connect to ...