Routers are devices that connect networks and make decisions on where to send incoming data packets, based on the address information contained in the packet and internal routing information. The most common form are SoHo routers, which connect home or small office networks to the internet and ...
0
votes
1answer
31 views
Are both IP address and default gateway needed on a switch to enable communication between different vlans?
I know that a router is necessary for VLANs to communicate with each othe, but I would like to know if both IP address and default gateway need to be configured on the switch in order for different ...
4
votes
4answers
113 views
Share one IP address with a simple router
We have just moved into a new office and have been given our 'internet connection' in the following form:
One Ethernet cable in the corner of the room
An IP address with subnet mask 255.255.255.0
...
4
votes
2answers
76 views
Linux router: ping doesn't route back
I have a Debian box which I'm trying to set up as a router and an Ubuntu box which I'm using as a client.
My problem is that when the Ubuntu client tries to ping a server on the Internet, the packets ...
0
votes
0answers
26 views
Please help me decide what I need for a small business network [closed]
I have a network at a small office (about 15 employees) that is often going down briefly or becomes impossible for certain computer to join unless the whole router is restarted. I am thinking of ...
1
vote
5answers
171 views
Router device VS Linux PC as a router - why to choose router?
Good routers usually have a price higher than a price of a low-budget PC ($200) which I can make a router by installing Zentyal, pfSense, ClearOS or something like this.
For example, my friend uses ...
0
votes
3answers
82 views
ARP broadcast and router performance
My employer subscribes to a fiber based leased Internet from a publicly owned incumbent ISP. The ISP admin says that he cannot give a subnet bigger than /30 because he fears that the ISP edge router ...
-3
votes
1answer
51 views
My outside ip is now pointing to my router [closed]
I'm not port forwarding that way either or anything like that.
So yeah, I have a (paid) static outside ip, and when I type that in I get access to my browser. What the hell is up with this? This ...
1
vote
3answers
87 views
What are some ports that are essentially “never” used (super rare port ranges) [closed]
I want to set my port forwarding routes far far away from the normal ports which my computer uses. I asked this question on Google and nothing like it came up, so, here I am.
(this is a subjective ...
1
vote
0answers
30 views
dsl router for bridging two lans
I have two office locations that each have DSL service. I have the routers set up so that the two subnets, 10.0.1.x and 10.0.2.x, correctly keep data on each subnet and or pass across to the other ...
3
votes
2answers
112 views
Criteria for a new router
I am looking at replacing our aging router - an old Cisco 2811 - with a new unit. What kind of criteria should I be looking at to select a model?
I have a few fairly long runs I'm looking at so I'm ...
0
votes
0answers
39 views
Router Range Calculations [closed]
I'm relatively new to ServerFault, so I'm hesitant to ask what I KNOW is a dumb question, but this is bugging the hell out of me.
AmpedWireless has announced a new router, the R20000G, that boasts ...
2
votes
1answer
63 views
Check what the average packet size is in a network (what firewall/router should I get)
Is there any way to do this?
We are looking into buying a Fortigate 100D but are unsure if it will hold up to our requirements.
http://www.fortinet.com/products/fortigate/100D.html
While the ...
0
votes
2answers
89 views
How is a public ip adddress accessible anywhere from the internet?
If my machine has a public ip address, then any one from any corner of the world can access this ip address. How does this happen? I mean where is my ip address updated or where does the requester see ...
0
votes
3answers
73 views
Anomalous behavior of Routers
I am observing anomalous behavior Cisco concerning routers.
Scenario 1:
Ping from Server A to Cisco Router 1905 - 0.3 ms
Ping from Server A through Cisco Router 1905 to Server B - 3.2 ms
...
1
vote
1answer
35 views
Is it possible to distinguish traffic from different computers from behind a router?
The mac address would be that of the router, I presume. But could I distinguish the ip addresses of the computers behind the router, or could I only see a global ip address that belongs to the router?
...
0
votes
1answer
65 views
ARP Connectivity on cisco small LAN
I feel so lame to have this doubt, so there is the question : Why do I not have connectivity ?
The case is simple, I have configured the topology and have connectivity between each PC and respective ...
1
vote
2answers
68 views
Router for Internet via VPN, HTTPS-Proxy or SSH
I'm curious if someone knows an answer to my quite special question.
I want to realize the following setup:
I have 1 static IP with (restricted) internet access via Ethernet. I want to get a router ...
0
votes
1answer
47 views
Wireless internet router keeps dropping out [closed]
I've got a problem with my wireless router at home. It is a BT ADSL line (8mbit) (though we usually get 5mbit). We're using a Belkin N wireless modem router
There are at any one time between 1 and 6 ...
0
votes
1answer
47 views
DD-WRT Block all but one site
Im trying to block all websites but one with DD-WRT on a Linksys router. I am currently using this script:
iptables -I FORWARD 1 -p tcp -d dd-wrt.com --dport 80 -j ACCEPT
iptables -I FORWARD 2 -p tcp ...
-1
votes
0answers
32 views
Router Redirection [closed]
I use at home ASUS RT-N10 router. Everything was ok: LAN, WAN, traffic; until I went to the Cisco web site. First time I have an error (I thought it was cisco site pronlems). Then I could open Cisco ...
1
vote
2answers
48 views
How can I separate a VMWare Server from the host's MAC Address on my router?
I'm running a Debian LAMP Server in VMWare Player, using a bridged connection.
However, on my router the VM is showing up with the same MAC Address... therefore I can't set the VM to a static ...
0
votes
0answers
8 views
Need to hard reset Dlink router once a week [migrated]
I am having a Dlink DIR 655 router at the home. Once a week randomly, I see that my connection becomes weak and faulty. I have to go and do a hard-reset of the router (switch off and switch on), so ...
-1
votes
0answers
35 views
how can i change my static ip? [closed]
Hey i tryed the similier posts selutions but couldnt get it to work...
i tryed:
releasing and renewing the WAN.
unplug the rounter and wait for a night.
and i looked on the local area connection ...
0
votes
3answers
52 views
Router Power Supply [closed]
I have a wireless router that needs a 12VDC 1A power supply. I no longer have the power supply for it. Is there any harm in using a 12VDC 1.2A power supply instead?
3
votes
2answers
206 views
Can't communicate between lan ports on openwrt router
I've got a WBMR-HP-G300H Buffalo Airstation router on which I've installed the lates OpenWRT software.
All is working well (ADSL, WIFI etc) except for one niggle. I can't communicate between lan ...
3
votes
2answers
173 views
Why is nat required when proxy is enough? [closed]
My machine is connected in a local lan. to connect to the internet the traffic goes through proxy server. my understanding of proxy server is that it sends the request on behalf of the original ...
0
votes
2answers
28 views
two network from one adsl connection,
If i use a telephone splitter at an adsl line and connect a VPN test modem and the existing modem to the output of the line splitter,can i get two network with different static ip address? I know this ...
0
votes
2answers
60 views
How to route/redirect my Internet traffic through another router/node on the net?
I am trying to access some content on the Internet which has some stupid geographic restrictions (access limited from a specific country. Most likely the restriction is IP based. I happen to have ...
-2
votes
1answer
58 views
How does a proxy server forward reply to the client?
A proxy maintains anonymity, i.e. the server replies to the proxy thinking that it is the client. now after receiving the reply fro the server, how does the proxy server forward the reply to the ...
1
vote
2answers
42 views
Connecting multiple lans by VPN
Our customer has about 10 different offices.
Head office has a router which maintains IPSec VPN connections to all of the site.
Each site has their own IP range, eg..
192.168.50.x
192.168.60.x
...
-3
votes
4answers
112 views
Can all routers do load balancing?
I want to use a Cisco 877 router to load balance two WAN connections, each coming in on a different ethernet port. The ISP tells me this isn't possible.
My understanding is that all routers are ...
0
votes
1answer
37 views
Why is my firewall preventing me from accessing some websites
I have an old Belkin router and when I enable the firewall I cannot access certain websites. For example:
http://www.avisynth.org
With Firewall Enabled: Main page loads and begins to do a meta ...
1
vote
1answer
29 views
Reloading Cisco 881w AP reloads the whole router?
This is about a Cisco router (881w) with the AP-WLAN interface.
While on the AP interface (after having entered this command:)
service-module wlan-ap 0 session
If I enter this command:
reload
...
3
votes
2answers
136 views
Putting A Basic Switch In Front Of Several Basic Linksys Routers?
We have a building with 10 individual offices.
We have a single internet connection coming in where our ISP has provided us with 10 public ip addresses.
Each office would like to have their own ...
1
vote
1answer
30 views
Replacing modem with a vpn router
Can I replace an open network iconnect 624 modem with a cisco router in a small network that needs multiple PPTP VPN connection? iconnect 624 modem doesnt allow multple simultaneous PPTP VPN channels? ...
0
votes
3answers
40 views
How does a physical server and/or a web server work with an IP address or multiple of them?
I'm trying to understand how IP addresses work. For instance, when you rent space at a colo for your server, and say, "I need 20 IP addresses", how are they giving those to you, and is your server ...
0
votes
2answers
47 views
Playing hd video from a server to 10 android tablets in LAN via wi-fi
I am working on a project where I will have 10 android tablets and a server with videos
in 720p quality. All of these will be in the same LAN. I want to be able to play videos from this server on the ...
0
votes
3answers
87 views
How do I configure my router as a DNS server?
I have a question regarding router configuration: How can I configure it to direct certain packets sent to certain addresses (like Facebook, Youtube and other procrastination sites) to be sent to a ...
1
vote
1answer
55 views
PC can access another LAN devices's embedded web server when wired to router/switch, but not over WiFi
For work, I have designed a hardware 'box' (actually an industrial control gizmo) which has an embedded web server for the purpose of configuration (much like a regular domestic Internet router has a ...
0
votes
0answers
12 views
ttft clear nvram memory usr5461
I have a U.S. Robotics 5461 router which I've installed DD-WRT platform to in and added settings from another (LinkSys) router which had different configuration; Does anyone knows how to clear the ...
2
votes
1answer
47 views
Is it possible/likely for a faulty network card (gigabit ethernet) to crash your consumer-grade router?
After much messing around with what appeared to be 4 faulty routers in a row I realized that I can reproduce causing my DLINK DIR-655 router to freeze up and require a hard reboot (to factory ...
3
votes
1answer
57 views
Force to use specific DNS provider at network
OpenDNS offers a quite simple way for internet filtering by categories. Of course who could get the correct IP address can easily bypass the filter but it would be enough for my expectations.
The ...
0
votes
1answer
98 views
Gateway Modem loses ability to DNS lookup intermittently, often under heavy load
We're using a Bell 2Wire Gateway modem/router as our only hub (with some switches attached).
Intermittently, but frequently when a large download is initiated, all computers on our LAN lose the ...
0
votes
2answers
31 views
joining workgroup on a network with two routers
Thanks to another unrelated question, I found a usable network diagram
Internet
|
(dhcpc)
------------------------------
| Router A ...
0
votes
1answer
87 views
Juniper J4350 out of order
I have got two (2) Juniper routers J4350 that are out of order :
All the interfaces are down (leds on the interfaces don't ligthen, ping dosen't respond)
No output on the console port (even when ...
1
vote
0answers
102 views
need help to setup internet load-balancing for a small ISP
I need some help about the following problems:
I want to do load-balancing for two Internet dsl connection from same isp and same speed
I need to manage fail over also
I want to manage up to 50 user ...
-1
votes
2answers
102 views
Destination NAT Onto the Same Network from internal clients
I have a DSL router which acts as NAT (SNAT & DNAT).
I have setup a server on internal network (10.0.0.2 at port 43201).
DSL router was configured to "port forward" (or DNAT) all incoming ...
2
votes
1answer
71 views
DNS Server address configured inside Router not working
Well, I have an ISP router in which I have configured DNS Servers to use (Primary & Secondary) like Google DNS. It works just fine.
But now I have setup a computer with DNS server (Simple DNS ...
0
votes
0answers
11 views
Remote Device Integration to BAS Server in LAN
I am not sure this is the appropriate place for asking this question.
I have a building automation system (BAS)in an office center. That system consists of a specific server and control devices. The ...
0
votes
1answer
112 views
How to configure Transparent IP Address Sharing (TAS) on a Mediatrix 4102 with DGW 2.0 firmware?
I am making the switch to VoIP. I chose voip.ms as my service provider and Mediatrix 4102 as my ATA.
One reason why I chose the Mediatrix over other popular consumer ATAs is that it's supposed to be ...
