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.
84
questions
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Bridging wlan0 to eth0
On Arch Linux, I would like to have eth0 (connected to bridged router) share the connection received from wlan0, I've read tutorials but I'm not command savvy as other users are and don't completely ...
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5
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What's the maximum number of wifi connections for a single WiFi router?
We've got a Draytek 2829VN Wifi router and I'm wondering how many concurrent connections I should expect a router of this kind to cope with? We are looking to connect 60 iPads!
I'd also be ...
user57675
19
votes
3
answers
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Slowest wireless client dictates the connection quality of all others?
Not sure if this is the place to ask this, but I couldn't find a more appropriate StackExchange site. I heard that the quality of wireless connection follows the law of the lowest common denominator - ...
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2
answers
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linux router setup
I a trying to setup a a linux router for the first time and i am struggling with the setup.
Here how i want to setup it up: ISP line -> Linux router -> Linksys router -> Lan.
Linux router has eth0 ...
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48
votes
11
answers
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What is the difference between UDP and TCP?
My router has two protocols (and a "both" option) that I can select when setting up port forwarding: UDP and TCP. What is the difference between these two protocols and when would you select one over ...
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5
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What's the difference between a switch, a router, and a modem?
What's the difference between a switch, a router, and a modem?
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17
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7
answers
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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 ...
wireshark
15
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3
answers
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Can you recommend a good intro to iptables? [closed]
I have to setup a firewall on a Linux server (all my previous experience is with Windows). My rules are meant to be pretty simple - forbid all, allow some ports with all, allow some ports for specific ...
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9
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10
answers
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Getting an IP's MAC address from behind a router
I want to know, if possible, how to get a MAC address of an IP address if I am behind a router.
I tried doing a ping to the IP and checking the arp table, but the only entry is the router's MAC.
Any ...
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4
votes
9
answers
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Best solution for Multi-WAN failover (inside & out)? [closed]
Looking for a way to setup 2 ISPs in failover mode, for both incoming & outgoing traffic, for our small (<100 devices) network.
The leading contender for now seems to be the Peplink Balance ...
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3
votes
1
answer
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How come I can't redirect TCP ports on this wireless router?
I am configuring a router to redirect TCP port 5900 (yes, this is for VNC) to a specific IP address on the network. Here is what I have:
From a local computer on the same network, I can telnet to 192....
- 2,745
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votes
1
answer
3k
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Multicast accross the subnets
My application sends some UDP packets on a multicast address.
In our office we have 3 subnets connected via routers.
Sitting in my subnet I'm able to ping the IP of the other subnet.
Will multicast ...
2
votes
2
answers
3k
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Exposing LAN with Zerotier when using Ubiquiti Edge Router X?
So I managed to install ZeroTier with the Ubiquiti Edge Router X via:
admin@edgerouter# sudo -i
root@edgerouter:~# curl -s https://install.zerotier.com | sudo bash
And got to access the Edge OS (...
- 269
1
vote
1
answer
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Linux split access (multiple internet connections w/ load balancing)
Short story: I've got a faulty cisco 1811 on my hands. It's a dual wan fixed configuration router. I had it setup with route maps to do load balancing.
It works but every couple of hours it shits ...
- 196
0
votes
3
answers
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Remote logging with Syslogd, can I change the hostname?
I am running ddwrt v24-sp2 on three WRT54GL routers. These routers all send their syslog information to the same remote server using syslogd
The problem is that in the logs the hostname will change ...
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26
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11
answers
20k
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Is anyone else using OpenBSD as a router in the enterprise? What hardware are you running it on? [closed]
We have an OpenBSD router at each of our locations, currently running on generic "homebrew" PC hardware in a 4U server case. Due to reliability concerns and space considerations we're looking at ...
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23
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3
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What is strict, moderate and open NAT?
NAT options on domestic routers often come configured as strict. What does this mean? What do moderate or open do? Port-forwarding/DMZ access works properly on strict so why bother with the other two?
...
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13
votes
3
answers
13k
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Is there danger to virtualizing a router?
I had read on a few forums about pfSense that said it was dangerous to virtualize pfSense. The reason that was stated was an attacker could use pfsense as a spring board for an attack on the ...
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11
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6
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monowall vs pfsense
I'm building a router out of a Mini-ITX pc + compact flash card setup and I'm trying to choose a suitable distro. My criteria are:
Must be able to run from a CF card (so no excessive disk writes)
I'm ...
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9
votes
1
answer
4k
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Limit ICMP Per Source IP with IPTables
I have mistakenly thought that the limit module is per source ip, but it appears to be based on all requests:
577 36987 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 ...
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9
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2
answers
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How to prevent or block other DHCP servers?
Is it possible in a managed switch such as a 3com 4500 or a HP Baseline PWR-Plus type switch to block DHCP from being served through specific ports, or all except 1 port?
I have a DHCP server for ...
- 1,882
8
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7
answers
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How do you manage your Linux iptables configuration on a machine acting as a router?
I have a couple Linux machines that act as routers/firewalls for my networks and I have a script that runs all the iptables commands to set my rules. This seems to me like a really silly way to do it ...
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8
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4
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Inexpensive, Reliable Captive Portal [closed]
I do some wifi hotspot installations, and a new client recently asked me if it would be possible to force users to his website when they first open their browsers. After some Googling I figured out ...
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8
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4
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connect two routers with different subnet
I've seen a lot of questions about this, but haven't really understood/didn't match my issue.
I'm a newbie regarding networking.
I got two routers, both are connecting to the wan (giving them ...
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7
votes
1
answer
13k
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Is it possible to connect 2 networks with same IP range?
I have two networks with the same IP addresses in use and I need to connect them.
I have a third network between the two to connect them but I need to know :
- is it possible to communicate iof the ...
- 171
7
votes
4
answers
4k
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Is Selling Old Cisco Routers a Security Issue?
I'm a system admin but I'm not Cisco certified and I'm not a network engineer. Basically I only use switches/routers/modems with a GUI.
I've inherited a pile of old Cisco routers that are not in use ...
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5
votes
3
answers
25k
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Does Default Gateway IP = Router IP?
I am trying to automate logging into the routers setup config page, and if I can get the default gateway IP I want to be sure that I will be able to use that ip to login to the routers config page (of ...
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5
votes
4
answers
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How to properly nest a wireless router behind a wired router? [closed]
I wish to repurpose a wireless router to serve as a wireless access point behind a wired router (serving as gateway to WAN) so that I don't have to buy more hardware and recapture value on prior ...
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3
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Cisco 877 as a VPN server?
I have a Cisco 877 router which connects my network to the Internet using an ADSL line, a single public IP address and NAT; the IOS version is 15.
Everything is working ok, but I'd like to configure ...
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5
votes
3
answers
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Unable to connect on natted server from a host computer on the same LAN using public IP address
I have a server statically NAT’d using a registered IP address and it is accessible from the outside. The problem is I cannot access my server from the inside using the registered IP address with a ...
Rafty
5
votes
4
answers
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Help me understand the 'ip route' command for cisco routers
I just can't wrap my head around it.
For example:
I want the left-most router to be able to ping my computers on the left and vice-versa.
Where would I set up ip route and to what address. I feel ...
Sergio Tapia
4
votes
3
answers
3k
views
how to connect 2 independent computer networks?
I have 2 independent networks that are connected to internet. Each systems in a network can connect to the internet through the corresponding router/NAT device. i wish to connect these two LANs. I am ...
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votes
3
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How do I configure my router under another to avoid NAT issues?
I'm sorry if this has been answered before; I tried looking but couldn't find a solution. I'll try and explain as clearly as I can.
I've recently purchased a Rogers Mobile Rocket Hub and it's ...
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2
answers
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QoS for Cisco Router to Prioritize Voice and Interactive Traffic
I have a Cisco 891W NATing Voice and Data to the internet over a 10mbit/2mbit connection. Voice traffic gets degraded when I upload large files. Pings time out as well.
I tried to configure a QoS ...
TJ Huffington
3
votes
11
answers
3k
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Which hardware for an entreprise router/firewall/content filter/proxy on a single server [closed]
I have to set up a "secure" network for my boss.
For now, I have a ADSL router linked to a switch. All users are connected to this switch.
Security is obviously bad.
I want to put a server between the ...
Kortex786
3
votes
6
answers
5k
views
Generating and capturing Netflow on a Linux router
We currently have a dual-NIC Ubuntu server at our data centre acting as the gateway router between our public networks and our ISP. We have a /30 cross connect network on the ISP-facing NIC, and one ...
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2
votes
7
answers
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How to block external access to the DNS service running on a Cisco router?
I have a Cisco (877) router acting as the main gateway for a network; it has a DSL connection and performs NAT from the internal network to its external, public IP address.
The router allows SSH ...
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2
votes
2
answers
2k
views
Cisco Router - Website Doesn't Work Locally Because Public IP Directs to Router Itself!
I have an RV220W but this issue may apply to other Cisco routers.
My website is deployed at public IP address 123.45.67.89/MyWebsite/Default.htm. My web server has an internal IP to which port ...
S. Valmont
2
votes
2
answers
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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 ...
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2
answers
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welcome page via wireless internet
i want to make welcome page if users are surfing via my wirelesss connection
for example
user come to my resturant with his iphone
and search for wireless networkrs
the user see the resturant ...
Yan
2
votes
4
answers
3k
views
Wireless router with vpn server [closed]
I'm searching for a WLAN (Wifi) Router that can be used as VPN server as well for my home office.
Any good suggestions?
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2
answers
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Best ADSL router with built in secure VPN? [closed]
What is the best adsl modem/router with a built in VPN service?
How secure is this method with Windows XP clients?
Will I be able to log into a Windows domain using this VPN method?
Many thanks.
Andrew
2
votes
2
answers
3k
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How can I team or balance two DSL connections? [duplicate]
Possible Duplicate:
Is there a sensible way of ‘teaming’ two ADSL connections?
WARNING: I am NOT a networking professional (obviously, see below) but I am a programmer and have a decent ...
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2
votes
2
answers
5k
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Extremely slow NAT within a VMWare ESXi host using Linux VMs
I have a VMWare ESXi host attached to a fast network.
The host runs two virtual machines:
Gateway
Client
The gateway has two network interfaces, one that's bridged to the external network (vSwitch0),...
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2
votes
3
answers
705
views
Forwarding hostheaders
I have a question about forwarding of the hostheader inside a network.
My setup is this:
- On the front I have a Linksys router
- Behind the router I have 3-4 test webservers with different setups
- ...
- 181
2
votes
2
answers
3k
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How do I do IP Failover for my Public IP address with Linux HA
I did a lot of experiment with heartbeat, corosync and pacemaker for IP FailOver which I have to do with Public IP. I did more than one ip failover(VIPs) with two nodes, also with three nodes BUT ...
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2
votes
1
answer
266
views
A local IP address (RFC 1918) on my network that is not … local
I've noticed an IP address today on my network (192.168.15.1) which when visited actually goes to a page that has a router webconfig page (Not my router)
The puzzling thing is that i tried traceroute ...
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2
votes
3
answers
2k
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What ISP needs to provide in order to route native IPv6 /56 range to several VLANs
I have a theoretical question. Network topology is like this:
ISP <--- eth0 -> Router1 <- eth1 ----+--> VLAN1
'--> VLANx
For the sake of argument, ...
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2
votes
2
answers
17k
views
Restoring a Cisco router config using a config file
I'm working with a Cisco router over telnet (actually PuTTY), and I'm a newbie to ios.
I'm slowly getting the hang of it, but have a very basic question:
I have issued a show running-config command ...
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1
vote
1
answer
570
views
PPTP-Gateway routes icmp but no http
got a very strange behaviour with a Gentoo-based PPTP-Gateway here. I configured the VPN and the default routes - from the Gateway itself, the connections out to the VPN work great. But from the ...
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