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• VoIP on Netgear DGN 2000 and Lynksys PAP2

  - by David Brown

  I have a VoIP service running perfectly for outgoing calls but I cannot receive incoming calls. I have a Netgear DGN 2000 modem router on 192.168.0.1 and a Lynksys Phone Adapter PAP2 on 192.168.0.2. I have created 3 new custom services: Service Table Service Name Ports tlenfon(TCP) 5060 tlenfon2(UDP) 15000 tlenfon3(UDP) 35000 I have reserved the address 192.168.0.2 for the PAP 2 I have forwarded the ports for each service to the PAP2 Service Name Action LAN Server IP address WAN Users Log tlenfon ALLOW always 192.168.0.2 Any Always tlenfon2 ALLOW always 192.168.0.2 Any Always tlenfon3 ALLOW always 192.168.0.2 Any Always I have checked the Default DMZ and specified 192.168.0.2 What have I missed?

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• Multiple subnets behind SonicWall TZ 180

  - by Derek

  We have a SonicWall TZ180 that acts as a VPN endpoint. Right now it has one WAN IP address and a /24 assigned to the LAN interface. Our mail cluster administrator asked if it was possible to add a second private class C behind the VPN. This second subnet would be available to the other network and then we would use address objects and acls to limit access. Is this possible? I read up on PortShield but I don't know if that's what we would need to use because we're pushing all data out of one physical port into a Cisco switch that has VLANs already set up. Addendum: It appears that PortShields will do what I want with only one limitation; it requires a direct 1-1 relationship of portshield to physical port. This would then limit us to 4 PortShields on 1 TZ180. Is there a better solution than this?

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• VPN is working, except for DNS lookups. Firewall (Cisco ASA 5505) issue?

  - by macke

  I've got the following set up: LAN -> DHCP / DNS / VPN server (OSX 10.6) -> Cisco ASA 5505 -> WAN Connecting to the LAN via VPN works fine. I get all the details properly and I can ping any host on the internal network using their IP. However, I can't do any host lookups whatsoever. I've looked through the logs on and found this nugget in the firewall log: 3 Sep 08 2010 10:46:40 305006 10.0.0.197 65371 portmap translation creation failed for udp src inside:myhostname.local/53 dst inside:10.0.0.197/65371 Port 53 is dns services, no? Because of that log entry, I'm thinking that the issue is with the firewall, not the server. Any ideas? Please keep in mind that I have very little knowledge and experience with this kind of firewall and the little experience I do have is with the ASDM GUI console, not the CLI console.

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• Port Forwarding Using iptables on Ubuntu

  - by user141610

  This is the scenario. I have configured a web-server in MUX. Now I want to access that web-server from Internet. Ubuntu box has two interfaces, One is connected to WAN (Public IP) and another one is connected to MUX (Private IP). MUX has no option to insert default gateway. iptables -t nat -A PREROUTING -p tcp -i eth0 -d 103.x.x.x --dport 8001 -j DNAT --to-destination 192.168.1.2:8080 iptables -A FORWARD -p tcp -d 192.168.1.2 --dport 8080 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT It does not work. Thanks...

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• Ping Flooding in router log

  - by Freeman

  I've had recently a period of repeated disconnections from my router with connection problems. I checked my router log I found several Ping Flooding entries all originating from the IP 69.171.227.232 which turned out to be one of Facebook IPs! I'm wondering what does that means? Can Facebook chat cause such a condition? My router is DLink dir 600 and the condition that devices were disconnected from router, not router from internet.. Connection is WAN And how to solve this router problem?? My wifi clients were about 3-5 at that time..

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• Remote connection to dynamic public ip & private ip addresses

  - by user51737

  Many times I connected to windows computer which has static public ip address via remote desktop over wan links. I'm wondering how could I connect to the remote computer that has dynamic public ip address & private ip addresses assigned. I've 2 systems at home: xp system-------connected to internet(dynamic public ip) & allowed other users to connected to the internet on the interface. windows vista system--------enabled dhcp on the interface to access internet from xp. How could I remotely connect from my office to the 'vista system'?. If I've a router/modem at my home it may be possible to allow the ports for the system but I don't. Any tips?

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• I need to somehow change my ip address

  - by tric

  hello. i`m in a lan using iptables/masquerade. what i want to do, is to login in a web application.i write my user and passwd and click login and everything is fine, but if i try to modify something in that aplication it tells me that i have a wrong ip address.i knwo for sure that this app only allows ip 10.3.x.x .how can i trick that application to think that i have an ip from class 10.3.x.x and not my wan ip? 10x sorry for my bad english!

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• Rate of UDP packet loss over WLAN

  - by Martin

  While testing something with TFTP I noticed lots of timeouts (and slow speed as result) when I used my WLAN - and no problems when using a network cable. A quick test program sending/receiving UDP revealed that there are about 3-5% packets lost. While it's obvious that WLAN has to be less reliable than LAN, I have no knowledge what loss rates are considered 'normal' - and when there is a need to further investigate the network infrastructure. Are there 'typical' packet loss rates on WLAN (and other network technologies e.g. PowerLAN, WAN, ...? Thanks

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• Can I ping via an arbitrary interface of a DD-WRT system? [migrated]

  - by bytebuster

  There's a Linksys WRT54GL router with DD-WRT firmware (v23SP2). The network has a simple dual-WAN configuration (standby mode, switching by a script): ~ # ip route 192.168.3.0/24 dev br0 proto kernel scope link src 192.168.3.1 192.168.2.0/24 dev vlan2 proto kernel scope link src 192.168.2.2 192.168.1.0/24 dev vlan1 proto kernel scope link src 192.168.1.67 127.0.0.0/8 dev lo scope link default via 192.168.2.1 dev vlan2 I'm trying to ping a certain server arbitrary via vlan1 or vlan2. What I tried, as suggested here: ping -I vlan2 <address> ping 192.168.2.1 <address> In both cases ping simply exits with no error messages. Also, ping ignores many other parameters, again, by exiting silently. I failed to find any references that DD-WRT has a limited version of ping whatsoever. I also don't think it can be a permissions issue as mentioned here since the only user with DD-WRT is root. What's wrong?

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• Routing connections to passthrough a local machine

  - by xiamx

  Please tell me if what I'm trying to do is feasible. I have a router named "R" which is connected to WAN. R allows adding rules to the routing table. There are numerous of machines connected to the LAN port of R, they all have ip addresses 192.168.1.* assigned with DHCP on R. Among those machines, there's a machine C with ip address 192.168.1.100. I want all traffic of other machines in the subnet to pass-through machine C where some filtering and logging will be done. Is this possible? Is there a name for what I'm trying to do? (so i can do more googling later)

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• Update a DNS to a for a dynamic IP

  - by zobgib

  I want to use my schools connection as a place to host a small webserver but one problem I have run into is anytime my server reboots I am given a new IP inside the schools range. All of the schools IP are public and therefor I can access my computer directly over WAN just via the IP given in ifconfig. I would like to be able to give my computer a dns which is easy enough when I change the Arecords to match the current IP of my computer. The problem is if my computer ever reboots (my school regularly cycles power at night and over holidays) I am assigned a new IP and have to realize it then update the Arecords This is inconvenient and I figure there must be a better way to keep the DNS records updated either via a script or my own BIND server. That way if there is a power cycle I can still access the server via a Domain Name. If you have any direction to point me in it would be much appreciated. I am running Ubuntu 10.04 if that helps :).

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• Nagios: Is it possible to have multiple IPs for a host?

  - by Aknosis

  In our office we have dual WAN setup, if our cable connection drops we still get connectivity via our T1. The only issue is that our office network is no longer available on the same IP so all Nagios check go critical because they can't connect. What'd be awesome is if I could have Nagios try IP 1 by default but if for some reason its failing on that IP try IP 2. I doubt this is possible with a default install but I'm wondering if there is any add-ons or some other magic that could make this work?

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• Redirect traffic to local address so iOS speedtest app measures LAN speed

  - by ivan_sig

  I have mounted a Speedtest Mini server on a local LAMP, so I can test my LAN speeds effortlessly just by opening the URL with a Flash enabled web browser, the thing is, I want my iOS and Android devices to test with the LAN server too, not with the WAN, as I'm trying to measure LAN-Only performance. Is there a way so I can redirect the traffic intended to an specific external IP (The one of the real server) to my local server?. I know the servers IP as a short Wireshark analysis gave me the data, but still searching for a way to make that redirect. I have Jailbreak and root on my devices, so playing with system files is not a problem. I've tried mounting a proxy and making redirects by the hosts file and domain names, but it looks like Ookla's app relies on IP address only.

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• NGINX - Two different rails apps under same domain

  - by Murkin

  I have two different Rails (passenger) apps that I wan to host on one server: somehost.com/ <-- App #1 somehost.com/admin <--- App #2 Tried playing with the 'location' directive, but failed to have both operate. Can someone suggest the correct approach ? (I would prefer both to share same environment, only launch from different directories) EDIT: Sample (desired) config Trying to do something like: server { listen 80; server_name myhost.com; rails_env production; passenger_enabled on; location / { root /opt/main_site/public/; } location /dev { root /opt/admin_site/public/; } }

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• Time Capsule + Ubee Router?

  - by Charlie

  I can't for the life of me figure this out. I recently had TWC installed in my house, and wanted to disable the NAT and router functions of it. I have a Time Capsule hooked up to it from LAN1 (on the Ubee) to the WAN port on the TC. The problems started occurring here. I figured the settings would be these: Ubee Configuration mode: Bridge DHCP: Off TC IPv4: 192.168.100.2 Subnet Mask: 255.255.255.0 Router Address: 192.168.100.1 DNS Servers: 8.8.8.8, 8.8.4.4 Router Mode: DHCP and NAT But using those settings, my TC says "Double NAT", so I have to change it all around to the default settings of the Ubee using NAT. This leads me to believe bridge mode doesn't actually turn off NAT...

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• howt setup remote access into computer behind 2 routers?

  - by Steve Wasiura

  I can setup remote access to a pc behind a single router/firewall by using NAT and Port Forwarding, simples! But there is a customer that shares an internet connection with another office, and they are behind a second router firewall. I drawed a picture with my crayons but I can't attach it because I'm a new account on SF. see it here: http://i.imgur.com/b3FDx.png So how would I setup remote access to the pc that is beind the second firewall? It must be something about static routes, i.e. if I hit the wan ip on port 4905 I want it to forward it to 10.0.0.30 by going through 192.168.1.10 so a route statement like for all requests to 10.0.0.30, use 192.168.1.10 ? and ass u me router 2 has a static gateway ip of 192.168.1.10 and need a standard NAT on router 2 to point port 4905 to 10.0.0.30 is this the right way, any tips? both routers are netgear consumer equipment. thanks

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• Using m0n0wall in a VM for testing.

  - by tombull89

  I'd like to use m0n0wall inside a (VirtualBox) VM to play about with and see what it can do. Ultimately the goal is to have a number of virtual machines connected to a internal virtual network which goes through to the m0n0wall VM, and then the m0n0wall box connected to the internet through NAT or a bridged addaptor on my host machine. I can find out how to set the LAN and WAN addresses, but this seems to be only for using m0n0wall as a router intead of attached to another router. Let's see if I can diagram this: [Virtual Machine]---Internal (VM Only) Network ---[m0n0wall VM]---Bridged/NAT Addaptor---["real" router]---Internet. Can anybody suggest how I should do this or am I thinking m0n0wall isn't meant to be used like this?

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• pfSense router gives DNS rebinding warning when accessing subdomains

  - by Richard Maddis

  I have just set up a router running pfSense on our network and forwarded the appropriate ports. I have a small web server running in my network, and a domain name pointing to our (WAN) IP. When accessing that domain name, everything works fine. However, when accessing a subdomain of the domain name, pfSense will give a DNS rebinding warning. This did not happen back when I used a DD-WRT router. What is the proper way to fix this? The DNS records for the subdomain also point to the same address (I use a virtual server to differentiate the subdomains.)

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• Need to configure multiple default gateways for four seperate physical network ports for a FreeBSD Webserver

  - by user20010

  I need to configure default gateways for four separate physical network interfaces for a FreeBSD Webserver. Basically, this is a web server that needs to be accessed by multiple WANS. I've been using various online resources, and a combination of setfib, pf, and ipfw. This web server will be deployed in multiple sites where access to next hop router info is not available, so we can't use static routes. We've used setfib to successfully create multiple routing tables and can ping beyond every default gateway we've created. Using setfib # ping ip.addr.what.ever we can ping anything available on a wan and beyond the router. The problem is we can't get Apache web server (port 80) traffic to route out when external users access the server(box). Multiple people have examples of binding setfib to ipfw commands, but none of them seem to work.

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• Home router for higher network loads

  - by Zizzencs

  I'm trying to find a replacement for my ASUS WL500GP router. Some constraints: my ISP now provides 120 Mbit bandwidth - the router must be able to handle it I have 3 computers and a laptop at home - the router must have at least 4 LAN ports and the WAN port I need to be able to do the following in parallel: use bittorrent with ~1000 connections transfer files from one home computer to another at high speed access one home computer from my workplace I don't really need wireless I don't really want two boxes to serve all these purposes. So I was searching for a router with 1 Gbit ports, jumbo frame support and good reviews, but haven't really found a promising candidate so far. Any suggestions?

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• Windows 2008 server and Redhat with only 1 ip address, can windows route the traffic?

  - by paulcap1

  I have a two home server VMs set up. Windows 2008 server on port 80 and Centos/Redhat on port 8080. Both have separate godaddy domain name A name records pointing to them. But I cant point both domain to the same IP I only have 1 wan ip address at home. So one of my domain is forward to my IP:8080. My question: Is it possible for my windows server to redirect a certain domain name to my Linux server on port 8080? So i Have mysite1.com going to windows and mysite2.com also going to the windows server but windows would redirect mysite2.com traffic to the linux ip address:8080. I want to access both sites at my work and my work firewall is strict and will not allow domain forwarding from godaddy.

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• Video streaming over multi display units

  - by ramdaz

  We have to share video across around 4/8 terminals at a public facility where we need to display live video from within the facility, as well as display messages(advertisements), and also play videos(not live) which need to be controlled centrally from another location. We can do central location handling over Internet, over ssh. What we want to do is connect cameras to a computer, and use the computer to display over multiple display units. We need to do live titling if possible. Once the live local telecast which usually takes about an hour or two a day, we would like to play other videos locally off the PC server. Preferably everything should run off Linux, since budgets are very constrained.... Addendum -- Its not over WAN, it's over a local area. I prefer not using LAN, we would rather use co-axial cable if possible. The reason is if it's LAN, I need some kind of an Networking device, at least a thin client

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• Networking issues with WNR3500L

  - by ageis23

  When I try connecting to my wireless network it attempts to connect then gives up. There's something strange going on with the mac's. The eternet switch and all the vlan interfaces have a mac 00:FF:FF:FF:FF:FF. config 'switch' 'eth0' option 'vlan0' '2 3 4 8*' option 'vlan1' '0 8' option 'vlan2' '1 8' config 'interface' 'loopback' option 'ifname' 'lo' option 'proto' 'static' option 'ipaddr' '127.0.0.1' option 'netmask' '255.0.0.0' config 'interface' 'lan' option 'type' 'bridge' option 'ifname' 'eth0.1' option 'proto' 'static' option 'netmask' '255.255.255.0' option 'ipaddr' '192.168.2.1' option 'ip6addr' '' option 'gateway' '192.168.1.253' option 'ip6gw' '' option 'dns' '' config 'interface' 'wan' option 'ifname' 'eth0' option 'proto' 'dhcp' option 'ipaddr' '192.168.1.8' option 'ip6addr' '' option 'netmask' '255.255.255.0' option 'gateway' '192.168.1.253' option 'ip6gw' '' option 'dns' '192.168.1.253' config 'interface' 'dmz' option 'ifname' 'eth0.2' option 'proto' 'static' option 'ipaddr' '192.168.0.1' option 'netmask' '255.255.255.0' Any help on this will be greatly appreciated! When I try setting the mac using macaddr it does nothing. It works perfectly fine when I turn the authentication off.

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• OpeVPN log connecting client IPs

  - by TossUser

  I looking for the best solution to log all connecting client's ip to either a text file or a database who logs into my VPN server. Under the IP I mean the public WAN IP on the internet where they are connecting from. A hack could definitely be to make the openvpn server log to a separate logfile and run logtail periodically to extract the necessary information. So the database I want to build would look like: Client_Name | Client_IP | Connection_date roadwarr1 | 72.84.99.11 | 03/04/14 - 22:44:00 Sat Please don't recommend me to use the commercial Openvpn Access Server. That's not a real solution here. If the disconnection date could be determined that would be even better so I could see how long a client was connected and from where! Thank you

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• Cisco 1760 T1 Setup

  - by Joseph

  My 1760 has a WIC1-T1 card in Slot 0 and the slot 0 "OK" light is lit. When the router boots it shows that it sees the T1 card. I would like to configure my T1. I received the following details from my ISP: * Removed IP's IP Version: IPv4 Router Interface: edge1.mia1 -- t1-2/1/0:2:13 -- Switch Port: Vlan: WAN Network: 4.59.?.?/30 Level3 Side: 4.59.?.? Customer Side: 4.59.?.? Cust. LAN IPs: 4.59.?.?/27 The problem is that it is not listed under interfaces. I am a noob with IOS, please let me know if you need more details. Thanks.

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