Laptop + Wireless Router = LAN
Oct 22, 2009
I hate to ask this, because I bet it's been asked many times before, but I want to start a little class teaching web development at a local night school and I wanted to set up a LAN using my laptop, CentOS, and a wireless router.
The idea is to have the students develop their pages and download files and get used to the idea of what a server is.
I see about ten students sitting in a room, popping open their laptops, logging onto the network, and then pointing their browsers to a certain IP address which would be the home page for the class.
If this is possible, can anybody point me in the right direction to teach myself how to do it?
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Jun 12, 2007
I have not been able to connect to my server via browser, ftp or email since my server had a OS reload & security package installed.
If I disconnect and remove my wireless router I can access the server directly from the modem. When the Linksys WRT54G is connected I can go anywhere on the net with no problems, except my server.
Is there something they might have done at the server to block wireless router access?
I get a timed out message when I ping any of the IP's on the server with the wireless router connected.
Linksys has been of no help and I have talked with Clearwire who owns my modem.
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Aug 29, 2008
I am setting up xampp on my desktop and when at home, I can develop on either the desktop or my laptop using xttp://localhost/ or xttp://desktop/. When I suddenly need to travel, what's the best/easiest/fastest way to make sure I have the files I need to work with on my laptop?
Is it to install xampp on my laptop, and then copy the files I need from /xampp/htdocs over from the desktop? How would I copy the MySQL databases over as well?
I was also looking into Microsoft's SyncToy 2.0. When combined with scheduled tasks I can do automatic sychronizations once per day. Multiple times per day would be ideal... but I could set up pairings and do manual copying everytime I need to run out.
Are there better ways? I could install the 'master' server on my laptop, but I would prefer to keep it on my desktop (more space, more power, etc.)
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Dec 3, 2008
if it was possible to install Plesk locally on my laptop as I need to do some testing and integration with it. I am running Windows Vista Home Edition.
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Feb 5, 2008
I ordered a new server... ah, looking forward to blistering fast speeds... with 7200 RPM SATA drives. The quote said they were 2.5" drives.
I get the server, look under the hood... They're LAPTOP drives!
WD 1200BEVS (WD Scorpio), listed as 5400 RPM!
Is this normal?? I mean, this thing has to burn at 85% CPU 24 hours a day.
Should we return it and what manufacturer should we suggest for the drives? I can't seems to even find 2.5" SATA drives for non-laptop use.
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May 12, 2008
I'm doing a project for my school ( a small technical college) and we're trying to come up with some sort of wireless authentication gateway. This doesn't need to be locked down and super secure, this is a state run school with an open wifi network. Basically we want all wireless users to be forced to view a splash page/AUP and agree to it before being able to access the web.
couple issues:
-Super low budget, so enterprise solutions are pretty much out of the question
-must be as transparent as possible to the use: no MAC registering with the IT dept. no added software, no RADIUS certs etc.
-we have limited access to the actual router and all administration but be done by the upstream provider(including inter-vlan routing)
I've looked at NoCAT and really like it but because of the existing network topology its going to be hard to force all traffic through a central box for filtering/auth
What I'm wondering is if there is a way to do selective DNS poisoning to redirect all lookups to a web authentication server(similar to nocat's system). After a host is authenticated their DNS would resolve correctly. I know someone could just go out by IP or potentially use different DNS servers but we really aren't that concerned about it, all they have to do is click 'accept' anyway.
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Jan 31, 2008
I'm not sure if this is the right place to be posting this, but at our hotel, we have wireless routers (Linksys) that any of our clients can use to connect their laptops to the internet. We have been getting reports from our ISP that spam has been coming from our external IP address, so I wanted to know what people would recommend as ways to combat either our computers or any of our clients' computers from sending out spam. The internet is connected through a firewall/server computer running linux. I thought about blocking port 25, but I'm sure we would have clients complaining about not being able to send any mail.
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May 27, 2007
Anyone have recommendations / references for Mexico / Latin America wireless ISPs and coverage areas?
IP satellite coverage?
Also looking for recommendations for Mexico / Latin America data centers (something like half rack, 20 amps, reliable, redundant, etc)
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Sep 3, 2014
Over the last two weeks several individuals in different parts of the USA have noted extra characters in some web pages when on the att network.
The same server is sending out the same sites fine, when viewed on all other internet providers we have tested. We have also tested multiple browsers. Interestingly, if you use the secure layer - https, the site is fine, no extra characters.
Can any settings or anything on the server hosting software, etc, precipitate or stop this?
Read more at [URL]...
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Feb 18, 2008
What routers would you recommend that is capable of doing BGP routing between multiple DS3, OC3's and Gig-E interfaces?
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May 26, 2007
I am having a big question which has been often asked, but which all the time depends on the network topology; so first let's be honnest :
- I have no experience with BGP / OSPF
- I have no experience with routers (except SOHO models
- I will not have to make this to work in a productive environment
So in the next month we will get an AS number and few IP addresses; the goal is to test drive a gigabit network before using it as productive network;
I would like to ask some advices here for early all aspecsts, let's show some important points :
- Which brand?
- Which model?
- Maybe refurbished?
The key points for me:
I am looking for a cheap chasis but extensible with time when it will be needed
- Extensible system
- Very cheap for small use (at beginning maximum $ 2-3k)
- Trafic rate : ~ 100 MBit/s to 4-5 GBit/s
- Type of trafic : HTML / JPG / GIF / PNG / CSS / EXE / ZIP (shared hosting network)
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Feb 21, 2007
getting my own AS number, but this seems to require also a router. I don’t really have a strong knowledge of routing, just basic knowledge.
As I think I understood, I have two possibilities for routing, to buy a ready-made router (Cisco, Juniper, Nortel,…) or to simply setup a simple box with Linux or BSD OS, some NIC and use a software such as Zebra, Quagga, etc…
So my question is :
- Is it possible to use for professional purposes a BSD box with Zebra ?
- What is entry price for a good Cisco router (approximately) ?
- Does BASIC routing setup requires a very strong knowledge ?
In case this would became concrete soon, people answering could maybe get some paid work doing this for us.
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Jan 10, 2007
I regiested a IP address from one company and I can post my website on internet. that company give me an IP address someting like: 167.23.42.100. Right now My internet speed is very slow, I want to reset my router. If I reset my router, router will produce a new IP address, Does this IP address is same as 167.23.42.100. IF i reset router, do i need to change my website address. I am worry that resetting router will affect my website address(domin name).
Maybe router IP is different as doman name. so I don't need to worry about
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May 17, 2009
I am looking for a good router which will handle two separate WAN connections and bridge them together. Basically, we have DSL at our office (1.5mbps down / 769kbps up), its the only service we can get, cable is not offered, and a T1 inst fast enough and costs too much. We require a faster connection, doing Skype, VPN connections to servers, desktop sharing etc.
Basically we want to order another DSL line 1.5mbps down / 768 kbps up and join it together with our current DSL connection for a total of 3mbps down/1.5mbps up.
Just want to make sure this is possible and if you guys can recommend a router brand and model. To clerify, we don't just want redunacy/fail over, we need to utilize both DSL connections at the same, as if they were one.
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Oct 18, 2009
I need 1U of space, .5 amp (50 watts) power, one IP, 2.5mbps bidirectional bandwidth (total of 5mbps up + down) and about 10GB of traffic per day each direction (total of 20GB up + down). Would be nice if they have remote KVM along with console (serial) access. Location should be anywhere in USA.
Purpose is to host a VPN router for various remote locations to connect in to. Reliability and good connection (low latency) is important.
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May 19, 2009
We are looking for a good multiple WAN router for our office. We just ordered two DSL 3.0mbps down / 768kbps up lines.
Here are the requirements:
--> Under $500
--> 2 WAN Load Balanced And Fail Over Support
--> Smart enough to handle special session state traffic. Example, if you start a HTTPS session on one DSL line it has to stay on that line. If you start an FTP session connection on one line it has to stay on that line.
--> VPN Tunnel Site-To-Site Support, Only need a max of 1 site-to-site tunnel, but nice to have more just in case.
--> Standard SPI Firewall With Port Forwarding
--> Reserve LAN Static IP's
--> Firewall throughput of at least 10mbps
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Feb 13, 2008
We have a small hosting company (currently 24 racks) that we are expanding to hold 100 racks. We have several 3640 series routers behind a 7200 series router (our edge router) that feed into numerous 2950 switches and 515 & 525 pix firewalls then into the racks with customer supplied switches within the rack. I want to replace all the 3640 and 2950 switches with a 6500 series switch. The only routing we do within the 3640's is subnet routing to the switches which make up individual networks for each customer. My goal is to use the 6500 switch to limit bandwidth for each port feeding a customer and to eliminate all but the 7200 router and the 2950 switches. Does anyone know of a reason or reasons this would not work or if it's just a bad idea. Looking for pro's and con's,
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Apr 15, 2008
Is it possible for forwarding ports for simultaneous use of web servers on the same LAN behind router?
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Mar 29, 2007
I have been thinking of getting a switch/router when I rent 10U´s of space in a DC, but what to get?
I need to be able to read the trafficusage on each port/IP for billing purpose.
havent got a clue what to buy, have been told that you can do it with a 1U server to get more statistic out of it, but what OS to use?
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Jun 29, 2008
i got one fully managed ip range from my isp around 256 ips to use on my networks. Basically i want to set up gateway, segment the 256 ips into two parts, each part with 128 ips. detail below
1, nameserver 123.123.123.2 and 123.123.123.3
3, first part gateway 123.123.123.4 and ip use from 123.123.123.5-123.123.123.128
4, second part gateway 123.123.123.129 and ip use from 123.123.123.130 - 123.123.123.255
what i am using?
centos 5.2 with vconfig installed
what i did?
1.i add the name server 123.123.123.2 and 123.123.123.3 to /etc/resolv.conf
2,i add the gateway 123.123.123.4 and 123.123.123.129 to /etc/sysconfig/network and added line" VLAN=yes"
3,i edited eth1 with following setting
#Realtek
DEVICE=eth1
BOOTPROTO=static
ONBOOT=yes
IPADDR=123.123.123.1
GATEWAY=
NETMASK=255.255.255.0
TYPE=Ethernet
4, i added eth1.2
DEVICE=eth1.2
BOOTPROTO=none
ONBOOT=yes
IPADDR=123.123.123.5
GATEWAY=123.123.123.4
NETMASK=255.255.255.0
TYPE=Ethernet
Vlan=yes
5, i added eth1.3
DEVICE=eth1.3
BOOTPROTO=none
ONBOOT=yes
IPADDR=123.123.123.130
GATEWAY=123.123.123.129
NETMASK=255.255.255.0
TYPE=Ethernet
Vlan=yes
then i restart the network
however the configuation fails to work,
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Mar 18, 2007
We currently have a single 100Mpbs (currently pushing ~40Mpbs) feed from a single upstream provider. Routing is handled by our transit provider.
We wish to provide a more resilient setup and are now looking to install our own BGP router(s) and take a second feed from another provider. I have a looked around the Cisco website and this forum but am unsure which model of routers / layer 3 switch we should be looking at.
A layer 3 switch looks more cost effective but doesn't appear to support enough routes for BGP without great expense. Would a 2600 router be enough or should I be looking at something higher like the 7600 series?
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Feb 22, 2008
I have seen these 2 OS that should work as router/firewall, but are they worth enything?
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Oct 31, 2007
I am about to design my company network.
The network will be designed like : we have 3 providers of IP transit, one will be the main network while the two other will feed the first network and manage a highly available network, probably using protocols like BGP4 and OSPF.
The current size of each fiber is 45 Mbit/s per operator. So I am looking for :
A router :
- able to handle each provider with up to 200 MBit/s in/output
- able to support protocol such as BGP4 or OSPF
- able to output snmp for monitoring
- have a little intuitive GUI for basic operations and have a real routing OS (like IOS or JunOS)
- is branded and warrantly (a plus would be hardware extensible)
- not too big box, something between 1 and 6U
A firewall :
- able to handle ALL the traffic to all carrier
- able to work as a SPF (drop all, allow only what I want, very accurate rules)
- have a little intuitive GUI for basic operations
- not too big box, something between 1 and 6U
About brand, most probably about Cisco, Juniper, Extreme or some good brand.
Which model would you advice me as router and which as firewall ? The price is not the main proccupation until it will do job just fine, but I would prefer to don't buy too expensive also.
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Jun 12, 2007
We have a project in mind and we are planning on using a Cisco 7140 to push about 80Mbps over ethernet. Do you think the 7140 will be enough or it will get maxed out? (the 7140 is supposed to be like the 7200VXR NPE-300).
The routing would be thorugh BGP with partial routes.
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Jul 11, 2007
I am currently looking at these Cisco switches:
- Cisco 2924 WS-C2924-XL-EN Enterprise Switch
- Cisco 2950 WS-C2950-24 Catalyst Switch
- Cisco 3512 WS-C3512-XL-EN Enterprise Switch
- Cisco 3524 WS-C3524-XL-EN Enterprise Switch
- Cisco 3548 WS-C3548-XL-EN Enterprise Switch
1) I was recommended to chose the XL-EN model switches because it seems they have more Memory, but the second one in the list (Catalyst) is not a XL-EN, is that going to have any affect performance wise? or it doesn't really matter?
2) I was also recommended to choose managed switches because that way I can use the SNMP features to measure bandwidth, are any of the switches above unmanaged?
3) I also want to be able to manage the switch remotely, web managed, are any of the switches above web-manageable?
4) Most importantly, when my datacenter give me a 100mbit drop, I dont know which port to plug it in in the 29** series. In the 35** I see it clearly but I am not able to see it in the 29**, any ideas?
5) On some of these switches I see a special port called "Console", what is it? where does that connect to?
6) Do any of the switches above not have a console port?
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Jun 13, 2007
I have decided to finally remove all my servers rented from provider to provider to one single place.
I want to manage everything, so basically route the traffic (at this time without BGP or OSPF), my current average of traffic for all servers together would be about 15 Mbit/s with top at 35-45 Mbit/s.
I want to buy a cheap router (no computer router), I'd like to buy a chassis with very extensible and upgradable router, so I can start with a basic card and later use BGP (and maybe OSPF) and have ability to push from 30 Mbit/s (to over 1000 Mbit/s by upgrading cards and memory).
So, which (refurbished or not) chassis can I buy ? Which card would you setup with it ?
The important is really the ability to start with low cost configuration and go up to very high rates without having to change all (of course once I will be average over...).
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Aug 2, 2009
I'm buying Cisco ASR 1000 router that should handle 2 Gbps bandwidth. Please advice on components, models, etc.
I have a vendor, but I'll appreciate any reference, based on your experience, on where to buy one at reasonable price. I think I can probably get refurbished ASR 1000 or similar as well, if the vendor can guarantee the quality of the device.
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Jun 17, 2009
We have a license application client(IBM/LUM) that connects to a license server outside our network.
The clients works this way... it binds a random port and tries to connect to the remote IP with UDP port 1515.
Through wireshark I could see that it reaches the destionation, although the way back is unreachable.
If I add this random port to our router Port Forward rule, it works perfectly. Although this is not a solution cause the port is changing every time.
Isnt this strange? Other applications open random ports as well and comunication is two-way reachable.
If I connect directly to the internet, it works perfectly as well.
What can I try to do with our ZyWall USG300 Router to fix this situation?
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Jul 31, 2009
We're building out a small setup for a client, and we're wondering what's a recommended L3 switch on a budget?
Basically, we're going to be colocating in a rack with about 12 servers & a 100 mbps drop, and won't really be doing any major bandwidth (less than 10 mbps).
The datacenter was saying something about a /30 handoff for the C class of IPs they're going to be allocating to us. They also said they will NOT handle any Vlans for us, and will just basically handoff the IPs and we will need to route to them and do our own vlans.
One thing we need to be able to do is route additional IPs to servers if a client orders them. We were recommended a 3550-24-EMI by a friend, it seems old but if it does the trick, it works. One thing I was reading about it though was PVlans and the 3550 not supporting them. I don't think we'd need PVlans in our setup, just basic 1 vlan per client.
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Mar 4, 2008
i'm using ddwrt for firmware on my router.
mainly because of dhcp static leasing of ip addresses,
and the amount of torrents i download don't bother the router unlike the older firmware.
my problem is:
REMOTE_ADDR
HTTP_X_FORWARDED_FOR
X-Forwarded-For
are all returning my ip of my router: 192.168.1.1
i'm wondering what i can do to fix this.
even setting as dmz i don't get the correct ip.
I'm pretty sure i had this working with my previous firmware several years back... its been a while since i've setup my site again.
neways if any one can suggest debugging tips or suggest routes i can take to accomplish what i'm doing.
i'm thinking if this doesn't work is i plan on purchasing a secondary nic to create a gateway.
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Feb 12, 2008
Is there a list somewhere of what the various hostnames one sees when running a traceroute?
Some are obvious, but quite a few aren't.
I come across car1 and car2 a lot, but can't quite figure those out.
(Example: gigabitethernet6-24.car2.bos1.Level3.net -- the "gigabitethernet" is obvious, as is bos1 (Boston). But car2? And it shows up towards the other end: ae-31-89.car1.Washington1.Level3.net. (Bonus: what's the "ae" at the start denoting?)
csw, ebr, mpr, and ash are all common followed by a single number, too. (pos and tge show up on RCN a lot.) cr, dcr, ecr, hr on Savvis?
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