a device that connects to 2 or more networks and is capable of forwarding data packets into the direction of the ultimate destination based on information read from the packet and internal routing tables.

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2
votes
3answers
1k views

Linux machine does not answer an ARP request

We have this situation: A router, which is an Ubuntu VM, has multiple VLAN interfaces on the same physical NIC. Those VLAN interfaces are dynamically configured and torn down and attached to networks ...
-1
votes
1answer
27 views

Do data center routers block malicious attacks? [on hold]

I was reading this today on Hacker News https://news.ycombinator.com/item?id=8671287 It's a vulnerability of PHP that would require a lot of trial and error guessing of a password. Out of curiosity, ...
0
votes
0answers
12 views

SOHO Repeating Router ARP Broadcasts [on hold]

I am trying to hunt down the source of degraded wireless networking performance. I have noted that wireshark shows that the DSL router (DNS/Gateway - 192.168.1.254) is continuously broadcasting ARP ...
-1
votes
0answers
28 views

OpenWRT & Hotspost: Redirect Ethernet to Captive Portal

I have an Ubiquiti AirRouter wich I've configured using CoovaAP After CoovaAP installation the router has OpenWRT on it, and you can access to the router configuration using a Java application, or ...
-1
votes
0answers
13 views

Asus RT-N66U Openvpn server connects but cant access the internet [on hold]

I have a Asus RT-N66U router at home, which i've created a openvpn server on port 443 using TCP. Got port 443 open. At my house, I have a ISP router (192.168.1.254), and my router connects on ...
1
vote
0answers
45 views

Why don't TP-Link 24x-switches propagate clients when cascaded in two?

I'm behind two TP-Link switches those are cascaded behind a TP-Link router, which is in turn behind a consumer router that works as in modem only mode. Clients connected to the first switch work ...
1
vote
1answer
847 views

LAN->LAN IP translation (for TortoiseSVN + Artifacts + Buffalo router)

Here's my scenario: I've got a VisualSVN server on my main dev box @ home. I'm also using Visual Studio 2010, TortoiseSVN, VisualSVN client (for source control), and Versioned 'Artifacts' (for bug ...
-3
votes
0answers
27 views

How to routing on virtual routers on windows? [closed]

Hi I have two virtuals routers: one with connectify (192.168.246.1), other with netsh hostednetwork(192.168.173.1). I have two other computers connected on routers (192.168.246.50, 192.168.173.172). ...
1
vote
2answers
1k views

Smoothwall Express interface issues

I have a SmoothWall Express box that is currently configured with a Green and Purple interface. Both interfaces are in the same /24 subnet (which seems odd to me). The green interface (address of ...
0
votes
0answers
19 views

bind9 internal domain name

For our internal network we're using domain names like user.int. I've setup bind to resolve those to the appropriate IP addresses. Since .int is actual top-level domain name(although used for just a ...
1
vote
3answers
701 views

Linux server not receiving default IPv6 route over PPP link

I'm replacing a pfSense router in a remote office with a small linux device, running Debian. The router only has to handle very basic iptables / DHCP and VPN facilities. It is configured so that the ...
-1
votes
0answers
16 views

Linux router under VMware can't contact physical gateway server intermittently

We're a site with upwards of 800 concurrent users with most services hosted on the Internet and a BYO service to facilitate access to these. Situation is some days - not everyday - we're seeing our ...
0
votes
0answers
4 views

I want to Host My Website from My Home Network [migrated]

I want host my simple Html Site on my Home Network using Apache Tomcat 7 I have domain which is perfectely pointing to my router's IP Address I did forward my port (Router Port) Like below Screen ...
0
votes
0answers
3 views

DDWRT router's DDNS update fails when using Static IP as Wan connection [migrated]

In my network I have two routers. 1 normal router (ADSL, given by ISP with iptv preconfigured ). 1 Asus router with DDWRT. I have set the DDWRT router to set DDNS (open dns through dnsometic). The ...
2
votes
3answers
2k views

Does an Alcatel 7750 emulator/simulator exist?

My company recently deployed several Alcatel-based networks (7750SR) for ethernet and IP transport, and me and my team will have to support a part of it. We're quite used to troubleshoot on Cisco ...
0
votes
0answers
7 views

LANCOM 1781VAW disconnects any VPN connection after 1 hour. Why?

I have a small infrastructure here and we are wondering why our lancom-router (1781VAW) disconnects any vpn connection after 60 minutes. how could i troubleshoot this? is this maybe a security ...
1
vote
1answer
34 views

OpenWRT router as a switch with DNS

We have a router (8 ports) that serves our church (it also is our modem with ADSL2 etc) and handles our DHCP services. I've needed to extend our network to accomodate another 2 ports, so an extra ...
0
votes
0answers
23 views

How can I troubleshoot my router NOT routing between LAN PCs?

I have a FiOS router, which has 3 PCs connected to it. One of the PCs used to run several servers/services; that I previously (using a different router from different ISP) successfully connected to ...
2
votes
1answer
3k views

Routing between two routers with static routes

I have a Draytek 3200 router and a pfsense rackmount router that I am trying to get to route to each other. I have a subnet on each router and a subnet for the link between, as shown here: As it ...
0
votes
2answers
181 views

Linux router: ping responses going through the wrong interface

I have a Debian server acting as a router for a small network. It has 3 network interfaces, one LAN and 2 WANs (two different ISPs, let's call them A and B, each of them with a public static IP ...
0
votes
3answers
1k views

Cisco 881 throughput/bandwidth issue

We have a dedicated 30Mb connection (up/down) from our ISP, but we can only seem to get 10Mb (up/down) from the router. Does anyone know what we're missing, or how we can tweak the settings on this ...
0
votes
0answers
38 views

Connect two mikrotik LAN

I got two RB951G-2HnD and two RBSXTG-5HPnD-HGr2. (clientsOfLan1) ))> RB1 <---> SXT1 ))> <(( SXT2 <---> RB2 <(( (clientsOfLan2) I need to 'connect' two LAN's around 951. I can't ...
0
votes
0answers
36 views

Cisco 877 configuration with multiple firewalls behind in parallel using public IP's

I would like to ask how I can configure my cisco 877 adsl router to have multiple firewalls installed in parallel behind the cisco 877 router. I have enclosed a diagram of what I am trying to achieve. ...
2
votes
1answer
3k views

Watchguard config, drop-in or mixed-routing mode?

I have a Watchguard XTM 2 that is currently acting as a firewall and a router for my business network, I currently have the WG setup in mixed-routing mode and am happy with the current configuration. ...
0
votes
0answers
36 views

Cisco Router Failover Configuration

I am a unix admin that has been stuck in the position of configuring a Cisco 1921 for one of our offices. In that particular site we have two connections, an AT&T eVPN and a Sprint MPLS. The MPLS ...
1
vote
2answers
719 views

Thomson TG585v7 router - promiscuous mode

I have a TG585v7 as a router with several machines plugged into it. In the default setup, the packets are only delivered to the specific machine but I want to be able to setup to monitor all network ...
1
vote
0answers
234 views

Cisco RV042 can ping gateway only

I have Cisco RV042 which the problem is can ping gateway only. here my setup : LAN Setting Device, IP address : 172.31.13.254 Netmask : 255.255.255.248 Dual Wan Setting WAN 1 Static IP: IP ...
1
vote
1answer
126 views

Configuration of Mikrotik to allow communication with wireless clients

I'm managing an relatively small office and my basic network setup is as follows: All LAN computers are connected to a central switch which is connected with a Mikrotik Router. LAN subnet is ...
0
votes
2answers
1k views

cisco ip nat / port forwarding

I have been trying to get port forwarding working with a newly installed cisco router. I cannot seem to find where my fault is and have been looking for quite a while. The relevant section of my ...
0
votes
1answer
45 views

Setting up iptables for port forwarding of incoming requests over a OpenVPN Client on a Router

I have a Router that runs DD-WRT and a OpenVPN Client that connects and redirects every request over the VPN. My VPN provider supports port forwards, the problem is my router does not forward ...
-1
votes
1answer
18 views

Access 2 Hosts from Internet on same subnet [closed]

Hi I have 2 raspberry PI in my network. And I want both of them accessibles from the internet. Right now I have a DMZ from you can access one with NO-IP setup: www.blabla.no-ip.org ----->DMZ ...
-5
votes
1answer
44 views

How do I connect a router on one LAN port to another router on another LAN port on the same switch? [closed]

I have the following setup: For non-technical reasons, I am unable to change the physical setup of the devices. What I'd like to do is have router 2 (a wireless router) act as a wireless AP that ...
0
votes
0answers
13 views

Using a Barracuda F400 Firewall Router Without a Modem

I'm looking into a problem where VoIP phones don't ring for some of the incoming calls that I believe might be due to the network configuration. Do you need a modem if you are using a Barracuda F400 ...
0
votes
1answer
28 views

openvpn server on router traffic visibility by ISP [closed]

Can my provider with DPI or another bad guys with SORM with access to all ISP transported traffic read my http packets send over openvpn server running on my router that use ISP connection for ...
1
vote
0answers
58 views

Forward single port between subnets on dd-wrt router

I have a DD-WRT router with two subnets, 192.168.0.0/24 and 192.168.8.0/24. The latter is used for a 'guest' WiFi network. Traffic between subnets is filtered using iptables. What I would like to ...
0
votes
1answer
42 views

What kind of router for trade shows or museum installation

Note: This is NOT a question for a specific router or brand of routers. It's a question about type of router or other equipment. What specs? That features will tell me if a router will work for this ...
0
votes
0answers
92 views

Cannot connect to my L2TP IPSec VPN

I am trying to get my VPN (L2TP IPSec PSK) to work. I have a Synology NAS where I have setup everything as it says on the Synology support page. In my Asus RT-N66U router I have opened UDP ports ...
0
votes
1answer
51 views

How to start with IPv6 subnetting on linux gateway

We are currently having perfectly working IPv4 network with a typical layout - internal network with all servers splitted to VLANs in 10.0.0.0/8 (each vlan is /24) and external network with public ip ...
1
vote
1answer
29 views

Server 2008 Static Routing (Terminal Services) Multiple Gateways/Routers

We have two internet connections, both on their own routers. Router 1: 192.168.0.1 / 255.255.255.0 Router 2: 192.168.0.2 / 255.255.255.0 Our terminal server has a single NIC, 192.168.0.3 / ...
-1
votes
1answer
21 views

access master router from a pc via a mid router placed inbetween PC and master router [closed]

I have 2 routers, Master router which is ADSL broadband modem/router (192.168.0.1). which is connected to a telephone ISP. then a Mid router which has Wan port connected to the master router's lan ...
0
votes
1answer
87 views

How to trace dropped TCP connections?

Trying to help someone with a situation where TCP connections get mysteriously dropped after a few minutes for no apparent reason (this happens even with non idle connections). Both client and server ...
0
votes
1answer
22 views

Forwarding traffic from one virtual interface to another

I have a router with two ethernet interfaces: eth0: 1.1.1.2 (with 1.1.1.1 gateway) eth1: 2.2.2.1 I created two new virtual interfaces: eth0:1 : 1.1.1.3 (with 1.1.1.1 gateway) eth1:1 : 2.2.3.1 ...
11
votes
4answers
7k views

Any reason not to enable DoS Defense in my router?

I recently found a DoS Defense setting in my DrayTek Vigor 2830 router, which is disabled as default. I'm running a very small server on this network and I take it very serious to have the server up ...
3
votes
2answers
3k views

Local DNS server (bind) and the router DHCP

I just set up an internal http server for internal use (I set up Redmine), in a small network (30 or so PCs). I set up the http server on a virtual box ubuntu, that runs also the DNS server (bind). ...
3
votes
1answer
67 views

Cisco CVE-2014-0224 Vulnerability

We have a Cisco RV-042 Small Business router and our PCI scans flagged it as being vulnerable to CVE-2014-0224 (CCS Injection/Man-in-the-Middle). It appears to be another OpenSSL vulnerability. We ...
0
votes
1answer
108 views

Routing from VLAN to Internet via L3 Switch

Please excuse the brain-dump - trying to solve a problem that's had be running around in circles for an entire day! TL;DR - Clients on two networks separated by a L3 switch can see and ping ...
0
votes
0answers
53 views

IPFire configuration as IDS behind router

I want to use an IPFire-Server primarily as an IDS behind an already existing router. The network's router (192.168.1.1) has access to the Internet and provides LAN-Slots for the clients. There is ...
0
votes
1answer
79 views

How can I control bandwidth, access times and priority per VLAN

I'm setting up access points (TL-WA901ND) that can each support up to four SSIDs, which can be assigned to VLANs. I would like to set up three SSIDs, each on a different VLAN, with the following ...
7
votes
6answers
9k views

What's the difference between a gateway and a router?

Here we can see the router is 67.23.27.187(first hop), but the gateway is 67.23.27.1. What's the difference between a gateway and a router? How does my computer know the IP of the router when only the ...
0
votes
2answers
225 views

Can I use a software router to filter traffic coming from a Cisco router?

I have the following topology working but i would like to be able to filter the traffic using a software router such as Zentyal. Current [INTERNET] === [Cisco 2600] ===[Cisco Switch] === [Machines] ...