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
2answers
94 views

nmap results to find open ports for SIP

I suspect that a firewall, or other security, on either the router, or on tleilax or doge is causing a problem with SIP calls. How do I establish that the connection is allowed and not being blocked? ...
0
votes
1answer
63 views

iptables - Redirect except list MAC Address

I'm using iptables on my router to redirect all web traffic to my page. But i don't know how to except my mac address list. I did command like this iptables -t nat -A PREROUTING -m mac ! ...
0
votes
1answer
62 views

How to connect to external server using router from VLAN's

I am newbie. I am trying to build network system in Packet Tracer. Now I have such network layout. I have different VLAN's Accounting and Sales. I have configured this using subinterface in ...
1
vote
1answer
160 views

Why does a router ping failure respond using a different IP?

From Windows CMD, when trying to ping another computer on our internal LAN, the IP obviously fails to respond. However the reply of "Destination host unreachable." comes from yet a different IP, and ...
4
votes
4answers
515 views

Is enabling https on a Cisco router a considerable security risk?

I would like to use Cisco's Network Assistant to manage my Cisco routers (I know there are other solutions for this, but for now I've decided to use CNA). It requires the HTTP or HTTPS service to be ...
-4
votes
2answers
71 views

Cisco 2801 - ACL example to prevent certain users in same subnet from accessing certain devices [closed]

May be a simple answer, but does anyone have an example of an ACL that would prevent certain users (preferably based on MAC address, so that I can not have to deal with static DHCP addressing) from ...
1
vote
1answer
85 views

(net)SNMP can GET but not SET

I am running OpenWRT (tried all 3 latest versions) in a TP-LINK WDR3600, with snmpd and snmp utils installed. I can get (although MIBs seem missing) but not set OIDs. SNMPGET root@OpenWrt:/# snmpget ...
0
votes
0answers
34 views

Redirect traffic through a computer to another connected to the same switch

I am trying to setup a single sender, single bottleneck and single receiver network. Network Image The router in the image is a computer that has ip_forwarding enabled. PC1 has the default gateway ...
-1
votes
2answers
66 views

Open port to only one external IP address

I am having trouble with unwanted traffic on a certain open port and want to lock the open port so it only allows incoming traffic from One single external IP address. I have had a Google and cant ...
0
votes
1answer
94 views

enable lacp mode active on isr 2951

Any idea if ISR 2951 support LACP ... i don't see any cli command to enable it. My router IOS version is 15.2(4)M7. Can you help please. below is my config: interface Port-channel1.1 description ...
0
votes
1answer
48 views

Set up a wifi network homepage just changing the router settings

I have a Netgear Aircard router with the usual configuration options (port forwarding, DMZ, port filters,...). I am using this network to provide wireless Internet access to the customers of my ...
0
votes
1answer
59 views

Is there a Cisco IOS command for finding out the serial number of a switch / router?

I am doing an inventory of all of our switches and I was wondering if there's a Cisco IOS command that will return the serial number for a switch and router? Thanks in advance!
-1
votes
3answers
52 views

Scale wireless network [closed]

I am setting a wireless network that will allow users to connect wirelessly to a file server for downloading file. Currently, I am using a Asus N66U router connected over a wired connection to a my ...
0
votes
2answers
494 views

Limit bandwidth in cisco router with policy-map doesn't work

I have a problem with my scenario in limiting bandwidth of ubuntu PC in GNS3 with class-map and policy-map. this is my topology in GNS3: ...
0
votes
0answers
99 views

API for Edgewater EdgeMarc routers

We need to programatically change network settings on an Edgemarc router. Since these are just Linux boxes the command line steps are straight forward, but their manual warns not to use the CLI (only ...
4
votes
2answers
226 views

ADSL router happily accepts IPv6 packets of 2K in size

As I understand IPv6 fragmentation, the routers do not perform fragmentation, only the end-to-end nodes do. And when any router along the path receives a packet larger than the MTU of the link to its ...
0
votes
2answers
61 views

Forward only internet traffic through VPN

The title probably needs some work, sorry in advance. My network is small and consists of a server with one NIC, a desktop computer and a few laptops. There's one wireless router (running OpenWrt) ...
0
votes
1answer
77 views

Router Static IP

We have a web app run by a set of servers that communicate with each other (to load balance requests, access database etc). On our internal network we have set up these servers to have static IP ...
0
votes
2answers
518 views

Any suggestions on why DNS is failing over DrayTek 2820?

In recent weeks a weird problem has started in my office. The internet seems to stop working, but it has not failed, it's just DNS problems. Setup: ADSL2+ AnnexM connection via a Draytek Vigor 2820 ...
-1
votes
1answer
70 views

Is it possible to mount these pieces of equipment vertically, together? [closed]

I have a Cisco 2811 and 2950 and a Dell PowerEdge R720 server. I have the 2811 and the 2950 in a wall mount that holds the two pieces of equipment vertically (the jacks are facing upwards). I'm ...
1
vote
1answer
71 views

Expose a machine on the far side of a VPN

We're using a VPN to connect a remote office to our main office, and a machine in the remote office needs to expose port 22 to the outside internet. Complications: The main office has a fixed IP ...
0
votes
1answer
79 views

Router accessible from Windows but not from Ubuntu on the same machine

I have a Linksys E900. I can access the internet and its admin page from Windows but not even its admin page from Ubuntu (on the same dual boot machine). Like there is no communication between the ...
0
votes
1answer
47 views

Routing - Access Lists

I am relatively new to learning networking I've been trying some stuff out about "Access Lists" but seem to be confused at some point. I am not able to deny a whole ip range from accessing another ...
1
vote
1answer
191 views

IGMP Router Mode VS Proxy Mode

I am trying to understand the difference between IGMP Router Mode and IGMP Proxy Mode here, http://technet.microsoft.com/en-us/library/cc957920.aspx There is a question for an exam I am studying that ...
4
votes
0answers
99 views

Configure Juniper M320 as Ethernet/STM transparent converter

There is Juniper M320. We need to move ALL the traffic from one port to another. Everything that comes to one port goes to another and vice versa. No snooping or any other processing is required. One ...
3
votes
1answer
272 views

OpenWRT - Manage Virtual LAN

I have an Ubiquiti AirRouter with OpenWRT on it and I've been trying to separate the manage of the ports. I've formated the router using CoovaChilli app, anyways the app just help to install OpenWRT ...
0
votes
0answers
69 views

Cisco 877 Initial Setup - Enable SDM

We purchased a used 877 and installed IOS and reset to factory defaults with a console cable. Now I just need to set it up as right now connecting via ethernet and pinging 10.10.10.1 won't connect (ip ...
0
votes
0answers
77 views

static routes not working for me

I have three routers connected like this: Internet ------- (WAN) RouterA (LAN) ------(LAN) RouterB (WAN) ---- (VPN) ---- (WAN) RouterC RouterA: RV042G; LAN: 192.168.100.100 /24 static route for ...
2
votes
1answer
56 views

Are MAC ID passed via DHCP Relay

Do MAC ID pass through dhcp relay? Even if its connected on the WAN from the internet? So if the DHCP Server is on the WAN of the router and connected to a DHCP server on the internet is it passed?
26
votes
4answers
3k views

Is there a way to provide user-specific passwords for Wi-Fi?

Is there a way to provide user-specific passwords for Wi-Fi, so that different users have different passwords? I'd like to provide each user with a different password for my Wi-Fi connection.
2
votes
1answer
64 views

DHCP Relay behind two router

If i have a DHCP Server above two routers and a cleint computer below and the client computer is connected to a router with DHCP Relay, will dhcp pass through those two routers? Here is an example ...
0
votes
2answers
341 views

Draytek 2830, Multiple VLANS on Same Port

The Kit Ubiquiti Unifi Long Range Wireless Access Point Cisco SG200-08P Switch (VLAN, POE Support) Draytek 2830VN Router The Problem I need to enable Multiple VLANS against a single port on the ...
1
vote
0answers
103 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 ...
0
votes
0answers
31 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 ...
0
votes
0answers
33 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 ...
0
votes
0answers
51 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 ...
1
vote
1answer
382 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
362 views

DD-WRT/OpenVPN Tunnel Between Two Routers - Block Non-VPN Traffic on vlan1

I have two DD-WRT routers with OpenVPN that I am trying to make a secured tunnel between them. I need them to drop everything that is not going to tap0 on the WAN ports(both of which are set to ...
0
votes
1answer
343 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
97 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. ...
0
votes
0answers
165 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
votes
1answer
40 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
84 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
1answer
79 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
187 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
88 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
563 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
0answers
33 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 ...
1
vote
1answer
73 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
31 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 ...