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• Why can't I access the WebUI of my DNS-323 NAS after a firmware upgrade?

  - by anonymous2

  Hi Everyone, I just bought a D-Link DNS-323 NAS Enclosure, and have run into a problem. I read that the firmware that had shipped with (1.07) did not support 2TB drives, so I downloaded firmware 1.08. Turned on the device for thwe first time and went straight to the WebUI (everything looked/worked fine) Proceeded with the firmware update, completed successfully. Rebooted and I cannot access the WebUI. I can see the NAS connected via my router interface I can also ping the ip adress assigned, but I cannot access the WebUI or find it via D-Link easy search software. I have tried the factory reset button, but that does not seem to be doing anything, the square blue light just keeps flashing from the moment the unit is powered on, whether I press the reset button or not, and the symptoms remain the same... PS. I did/do not have any drives installed yet. Please help?

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• Windows XP doesn't like small subnets?

  - by erniedwork

  This totally sounds like a bug to me, because my subnet mask and IP address should be valid by all accounts. My ISP has assigned me a fixed IP address of 65.110.7.20, with a subnet mask of 255.255.255.252. Which sounds about right, because we're trying to set up a router with a /31 network - just 4 ip addresses. But when I try to set this IP and netmask up in Windows XP, I get the following error: "The combination of IP address and subnet mask are invalid. All of the bits in the host address portion of the IP address are set to 0." But they're not all set to 0. That would be a subnet mask of 255.255.255.255. Even then, that too is a valid subnet mask, consisting of a network of 1 IP address. Is there a way around this? A registry hack maybe?

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• Access to a network server without port forwarding

  - by SdevDavid

  I have a network with the following structure. The server in PC2 is simple socket server TCP in 8080 port. I need to access to PC2 from other external network by socket client. This socket client knows the public IP (85.xxx.xxx.x), the private IP (192.168.0.21) and the port. How I can access PC2 without port forwarding on the router? If possible, I would like to have a reference in any programming language of this case.

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• Can't get port forwarding to work on Ubuntu

  - by Znarkus

  I'm using my home server as NAT/router, which works well. But now I'm trying to forward port 3478, which I can't get to work. eth0 = public interface eth1 = private network $ cat /proc/sys/net/ipv4/conf/eth0/forwarding 1 $ cat /proc/sys/net/ipv4/conf/eth1/forwarding 1 Then to forward port 3478 to 10.0.0.7, I read somewhere that I should run iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 3478 -j DNAT --to-destination 10.0.0.7:3478 iptables -A FORWARD -p tcp -d 10.0.0.7 --dport 3478 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT I also ran ufw allow 3478 But testing port 3478 with http://www.canyouseeme.org/ doesn't work. Any idea what I have done wrong?

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• Spambot Infection Detection

  - by crankshaft

  My server has been blocked by CBL for participating in curtwail spambot. Initially we suspected that it was coming from a PC and not from the server, but the router is blocking all packets on 25 except those coming from the server. I have just executed the tcpdump command and every 5 minutes I see a flurry of activity on port 25 that is very suspicious and I am sure that there is some process running on the server: 13:02:30.027436 IP exprod5og110.obsmtp.com.53803 > ubuntu.local.smtp: Flags [S], seq 171708781, win 5744, options [mss 1436,sackOK,TS val 3046699707 ecr 0,nop,wscale 2], length 0 I have stopped postfix, and yet there is still traffic on port 25 above. But how can I find what process is actually communicating on port 25 as it only rund for a few seconds and so for example lsof -i :25 will never catch it. I have been working on this now for 2 days, it is a live server and I cannot simply shut it down, any suggestion on how I can detect the source of this email bot process ?

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• VirtualBox bridged network not working as expected

  - by iby chenko

  I am having hard time getting Bridged network to work with VirtualBox. Idea is to have host as well as one or more guests on same LAN. Using NAT (default) I do get access to internet and any node on the LAN when working from one of the VM guests. However, no LAN node including host can access (or ping) guest in VM. I need to be able to use any guest as if it was a physical computer on the network (need to be accessed by any machine on LAN). According to my understanding of the VirtualBox documentation, this should be Bridged mode. I think I set it correctly, well, actually there is not much to it: 1. select Bridged mode in VM network setup 2. select physical NIC of the host to connect bridge to 3. start VM When I do this, each VM does get new IP address that corresponds to LAN settings : 192.168.1.100 192.168.1.102 192.168.1.103 etc. where host is 192.168.1.80 / 255.255.255.0 (IP addresses above 100 are served by DHCP server). This seem to be correct based on what I know about ethernet. From VM I can ping other nodes like 192.168.1.50 etc. and I still get ethernet access. So far so good... But I STILL cannot ping any of the other VMs (running ones of course). I cannot ping them from other VMs, from host or from other nodes on the LAN. Aside from fact that IP addresses handed to guests are now local, this still acts same as NAT. What is going on? What am I missing? Regards, I

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• node.js server not running

  - by CMDadabo

  I am trying to learn node.js, but I'm having trouble getting the simple server to run on localhost:8888. Here is the code for server.js: var http = require("http"); http.createServer(function(request, response) { response.writeHead(200, {"Content-Type": "text/plain"}); response.write("Hello World"); response.end(); }).listen(8888); server.js runs without errors, and trying netstat -an | grep 8888 from terminal returns tcp4 0 0 *.8888 *.* LISTEN However, when I go to localhost:8888 in a browser, it says that it cannot be found. I've looked at all the related questions, and nothing has worked so far. I've tried different ports, etc. I know that my router blocks incoming traffic on port 8888, but shouldn't that not matter if I'm trying to access it locally? I've run tomcat servers on this port before, for example. Thanks so much for your help! node.js version: v0.6.15 OS: Mac OS 10.6.8

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• Not getting my normal internet speed but my other computers can?

  - by Dennis

  I have Comcast Xfinity and I cannot reach anywhere near my promised speed. My family desktop which is hardwired into the router reaches to 60Mbps and so do my parents computers and my brothers. I cannot seem to get anywhere close to it, I know with being wireless I won't reach it, but I should at least get somewhere close. I can only pull 6Mbps and thats terrible for what I should be receiving. Any clue what could be wrong here? Edit: I have 100% signal and I'm not behind any walls

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• How to setup Microsoft Remote Desktop?

  - by jsoldi

  I'm trying to establish a connection between this app and my Win 8.1 Pro PC, but every guide I've found so far skip steps such as what to put under PC name or under Gateway. Also, should the User name be my email or something else? I've also no idea how to find or add a user in the step 6 of this guide because the only location listed is my PC and I don't even know what am I supposed to search for. I'm not even sure whether I have to add a user or this is an step I can skip. A comprehensive guide for people without experience in networking would be highly appreciated. Both my android tablet and PC are connected to the internet through a home router, in case this matters.

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• iptables, forward traffic for ip not active on the host itself

  - by gucki

  I have kvm guest which's netword card is conntected to the host using a tap device. The tap device is part of a bridge on the host together with eth0 so it can access the public network. So far everything works, the guest can access the public network and it can be accessed from the public network. Now the kvm process on the host provides a vnc server for the guest which listens on 127.0.0.1:5901 on the host. Is there any way to make this vnc server accessible by the ip address which the guest is using (ex. 192.168.0.249), without interrupting the guest from using the same ip (port 5901 is not used by the guest)? It should also work when the guest is not using any ip address at all. So basically I just want to fake IP xx is on the host and only answer/ forward traffic to port 5901 to the host itself. I tried using this NAT rule on the host, but it doesn't work. Ip forwarding is enabled at the host. iptables -t nat -A PREROUTING -p tcp --dst 192.168.0.249 --dport 5901 -j DNAT --to-destination 127.0.0.1:5901 I assume this is because the IP 192.168.0.249 is not not bound to any interfaces and so no ARP requests for it get answered and so no packets for this IP arrive at the host. How can make it work? :)

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• Running Tor relay on personal server: can this hurt?

  - by rxt

  I would like to install TOR as relay on a hosted personal server. I have loads of bandwidth that I don't use. It's not an exit point. Can this hurt my server somehow? Possible problems I'm thinking of are blacklisting the IP-address, or something similar. I know that exit points get blacklisted on many servers. So if I'm using Tor as a client, I will probably use a blacklisted IP-address for the outside world, so cannot access those sites. However, I'm running this on a server, and as a public relay. Could this hurt the functioning of and access to websites on this server? I could install it as a bridge. I'm a little confused about the difference between bridging and relaying. If I understand correctly the only difference is that a relay is public. Does this mean that bridging only works if I know someone and give them my IP-address?

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• Cannot SSH into Virtual Machine

  - by MasterGberry

  I am running a CentOS VM on my desktop that I use for development testing when coding in python. At my school I have a dedicated IP setup for the VM and my desktop so I never seem to have an issue ssh'ing from desktop into VM. I am now at home for winter break and cannot seem to SSH into the VM using the local ip address behind my router, the external IP with port 22 forwarded to my VM, or anything. Strangely enough I can ssh into my production server and then fromt here ssh into the VM, but not from my desktop to the VM directly What should I do to get this to work? Thanks

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• local wordpress installation not accessible from the outside world

  - by hello

  I have a working installation of wordpress located in /var/www/html/wordpress It is accessible in my local network at [local-machine-ip]/wordpress/ There is also a test page located in /var/www/html/test.html It is also accessible in my local network at [local-machine-ip] I would like the wordpress website to be accessible from the outside world. I know that my ISP blocks incoming requests on port 80, so I set my router to redirect requests from port 8080 to 80. This feature appears to be working correctly since I can access the test.html page using my public ip address as follows: [public-ip]:8080 However, I cannot access [public-ip]:8080/wordpress Here is my Apache config : <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/html ServerName [my.domain.com] <Directory /var/www/html/> Options FollowSymLinks Indexes MultiViews AllowOverride All Order allow,deny allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> Thanks!

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• Amazon EC2 IPSEC

  - by John Qualis

  I have configured a ubuntu 12.04 64-bit server machine on Amazon AWS to act as a strongswan IPSEC server. I want to connect to it from my MAC OSX Lion's inbuilt IPSEC client. The OSX machine is in my home network. I log into the AWS machine using a ssh to ubuntu@public-ip and I provide the private RSA key in form of .pem file which I downloaded when the machine instance was created. The ssh connection works file but the IPSEC connection fails. What credentials/configurations should I provide for an IPSEC connection from my OSX client to AWS ubuntu server? My OSX machine is behind an ISP provided modem/router. Appreciate any help and thanks in advance

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• website lookup extremely slow in ubuntu

  - by ubuntulover

  Hi I have a wireless broadband connection through a router and wireless modem. Everything works fine in Windows. However, in ubuntu on the same machine, websites seem to take longer to start loading. I think the dns lookup is slow. I think https sites may be slower, as Ijust can't log in to gmail. I am also using a mercurial repo with remote origin, and it takes forever (like 5 minutes) to push one small change. I think it is because it has to communicate through https multiple times. Should I change my dns server? I've seen that I don't have these problems at my work network (they have another dns server). This happens with the IPv4 settings being automatic (dhcp). When I change it to automatic (dhcp) addresses only, and add google's 8.8.8.8 in the dns servers, it still takes forever. Why is this happening?

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• Why do I have inconsistent network issues with my laptop's wireless?

  - by Jason

  I'm having trouble with my laptop Internet connection. It's patchy at best and resets or freezes a lot. The signal strength is also random. I thought it might be a driver issue but now I don't know. Three other computers using the same wireless network run well. I've switched out wireless routers so I don't think it's the router. I thought it might be the laptop's internal wireless card but I just bought an external USB network card and I'm still having problems. Specs Lenovo T-60p Windows 7 Ultimate Edition Patches/drivers are up to date I only use one of the below at a time, disabling the other: Intel PRO/Wireless 3945ABG v. 13.3.0.137 (Internal wireless) Medialink Wireless-N USB 2.0 Adapter (USB wireless) Any ideas on what might be the problem?

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• How can I use my Windows 7 computer to share WiFi connection with PCs that don't have wireless?

  - by Tom Auger

  Long story short: modem and wireless router are downstairs and we're having a LAN party where some visitors don't have wireless. There's no way to run the length of cabling required, so looking for options. My Windows 7 Home Premium PC has a wireless-n connection, and I'd like to see if I can use it as a "hub" or switch of sorts, running an ethernet cable out of the back and into a switch, then splitting off to the other PCs. Is this an option? I know with Internet sharing, you can set up your PC as a wireless access point, but I want to do the opposite.

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• website lookup extremely slow in ubuntu

  - by ubuntulover

  Hi I have a wireless broadband connection through a router and wireless modem. Everything works fine in Windows. However, in ubuntu on the same machine, websites seem to take longer to start loading. I think the dns lookup is slow. I think https sites may be slower, as Ijust can't log in to gmail. I am also using a mercurial repo with remote origin, and it takes forever (like 5 minutes) to push one small change. I think it is because it has to communicate through https multiple times. Should I change my dns server? I've seen that I don't have these problems at my work network (they have another dns server). This happens with the IPv4 settings being automatic (dhcp). When I change it to automatic (dhcp) addresses only, and add google's 8.8.8.8 in the dns servers, it still takes forever. Why is this happening?

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• iPhone VPN to iTunes Home Sharing [migrated]

  - by Philip Crumpton

  my goal is to set up a VPN on a Windows machine that contains my iTunes library then connect to that VPN with my iPhone and be able to utilize Home Sharing remotely. I have read that this can easily be set up if the iTunes library is on a Mac (Network Beacon and YazSoft ShareTool are two products I quickly found). I can't find anyone who has had success on a Windows machine, though. In my thinking, there are two options (aside from buying a Mac): 1.) Existing utility that takes care of this for me (like the Mac-only options listed above) and is compatible with iPhone (Hamachi is NOT compatible with iPhone VPN) 2.) Manually configure a VPN to allow Bonjour multicast (can't find any information on this) FYI my router is a Linksys WRT54GL running Tomato 1.28

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• Configure clients to navigate through specific wan. Pfsense

  - by leandronn

  I have a machine with a pfsense running. It is configured with three ethernet cards. LAN 192.168.2.1/21 WAN1 200.41.X.2/24 WAN2 200.41.X.3/24 ISP Gateway 200.41.X.1 This is a connection with 5 different IP addresses. WAN1 and WAN2 are directly connected to my ISP router. I need a way to configure some clients navigating through WAN1 and some through WAN2. I am new to pfsense so, please, if you can send me some examples to do this. I can add two squids if it is necessary. Thanks a lot.

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• CentOS box access by name

  - by out_sider

  I intent to develop a centos server with lamp. What I want is connect the server to any kind of home network and access it by http://myserver. I have already successfully set a static ip but I can't seem to ping it by name. If you had to develop a solution with the intent to plug in the box by Ethernet to a router and access it with a browser using the server name what would you do? That's basically what I'd like to know. Thanks in advance

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• Openvpn client-to-client connection reencrypted at Server?

  - by user1684411

  currently i'm using a site-2-site openvpn setup. The routers en/decrypt all traffic that goes from one net to another. One of them is the Openvpn server. This works but performance is not as good as possible. I think the limiting factor is the cpu power of the router. Would it be better if i use client-to-client connections and access the fileserver in the one net from a pc in the other, because the openvpn-server does not have to decrypt the (whole) packets?

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• Installing WiFi in a church for internet access

  - by Dave Griffiths

  Hi, a colleague at work asked this question: My local church want to get WiFi enabled in the whole of their offices and main church building. The offices and main building are in the same overall structure and so the signal does not need to travel outside to any other buildings outside this main structure. Where would I start on such a project and what kind of repeaters are needed (and how are they set up) given that some of the walls are pretty thick. Do you still have one ADSL line coming in to router or are there some options of having two lines coming in so that they isn't a single point of failure. Am looking at fibre for the broadband for increased speed. Any starting pointers appreciated.

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• Unable to run Django on Mac OS X

  - by cybervaldez

  I'm working with a Django project on my Mac (running Leopard) and I want to show it to my team. I've already passed the neccessary port forwards from my router to my Mac's LAN IP address but it doesn't work. I've also tried running the XAMPP server since that always worked with my Windows XP computer but it still doesn't work. Whenever I type my > it's showing a Page Load Error. Is this possibly an issue with an Mac OS X configuration that I need to setup first to allow my port forwards to get in? It's my first time to do this with Mac, perhaps I need to configure something else in network preferences?

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• Iptables and counters

  - by mehturt

  I'm trying to use iptables counters with munin to monitor traffic of hosts on my local subnet. For each host I set up a rule like this: iptables -I OUTPUT -d $ip This should count the packets going from firewall to $ip, correct? I found out that this does not seem to count all packets. I start tcpdump on my router (Linux) and I see packets to $ip that are not counted. For example I check number of packets for rule to my phone IP. I start tcpdump, refresh Gmail on my phoone, I see packets in tcpdump's output but iptables rule counters are not incremented. Then I open a web page on the same phone and the counters are incremented. What could be the reason?

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