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• Cisco 678 Will Not Work using PPPoE - Possibly Because I Configured it Incorrectly..?

  - by Brian Stinar

  I am attempting to configure a Cisco 678 because I am totally sick on my Actiontec. However, I am running into some problems. It seems as though the Cisco is able to train the line, but I am unable to ping out. I am all right at programming, but still learning a lot when it comes to being a system administrator. I apologize in advance if I did something ridiculous, or am attempting to configure this device to do something it was not designed to do. It is almost like I am not correctly configuring the device to grab it's IP using PPPoA (like my Actiontec.) The output from "show running" (below) makes me think this too. Below are the commands I ran in order to configure this: # en # set nvram erase # write # reboot # en # set nat enable # set dhcp server enable # set PPP wan0-0 ipcp 0.0.0.0 # set ppp wan0-0 dns 0.0.0.0 # set PPP wan0-0 login xxxxx // My actual login # set PPP wan0-0 password yyyyy // My actual password # set PPP restart enabled # set int wan0-0 close # set int wan0-0 vpi 0 # set int wan0-0 vci 32 # set int wan0-0 open # write # reboot Here is the output from a few commands I thought could provide some useful information: cbos#ping 74.125.224.113 Sending 1 8 byte ping(s) to 74.125.224.113 every 2 second(s) Request timed out cbos#show version Cisco Broadband Operating System CBOS (tm) 678 Software (C678-I-M), Version v2.4.9 - Release Software Copyright (c) 1986-2001 by cisco Systems, Inc. Compiled Nov 17 2004 15:26:29 DMT FULL firmware version G96 NVRAM image at 0x1030f000 cbos#show errors - Current Error Messages - ## Ticks Module Level Message 0 000:00:00:00 PPP Info IPCP Open Event on wan0-0 1 000:00:00:14 ATM Info Wan0 Up 2 000:00:00:14 PPP Info PPP Up Event on wan0-0 3 000:00:01:54 PPP Info PPP Down Event on wan0-0 Total Number of Error Messages: 4 cbos#show interface wan0 wan0 ADSL Physical Port Line Trained Actual Configuration: Overhead Framing: 3 Trellis Coding: Enabled Standard Compliance: T1.413 Downstream Data Rate: 1184 Kbps Upstream Data Rate: 928 Kbps Interleave S Downstream: 4 Interleave D Downstream: 16 Interleave R Downstream: 16 Interleave S Upstream: 4 Interleave D Upstream: 8 Interleave R Upstream: 16 Modem Microcode: G96 DSP version: 0 Operating State: Showtime/Data Mode Configured: Echo Cancellation: Disabled Overhead Framing: 3 Coding Gain: Auto TX Power Attenuation: 0dB Trellis Coding: Enabled Bit Swapping: Disabled Standard Compliance: T1.413 Remote Standard Compliance: T1.413 Tx Start Bin: 0x6 Tx End Bin: 0x1f Data Interface: Utopia L1 Status: Local SNR Margin: 19.0dB Local Coding Gain: 7.5dB Local Transmit Power: 12.5dB Local Attenuation: 46.0dB Remote Attenuation: 31.0dB Local Counters: Interleaved RS Corrected Bytes: 0 Interleaved Symbols with CRC Errors: 2 No Cell Delineation Interleaved: 0 Out of Cell Delineation Interleaved: 0 Header Error Check Counter Interleaved: 0 Count of Severely Errored Frames: 0 Count of Loss of Signal Frames: 0 Remote Counters: Interleaved RS Corrected Bytes: 0 Interleaved Symbols with CRC Errors: 1 No Cell Delineation Interleaved: 0 Header Error Check Counter Interleaved: 0 Count of Severely Errored Frames: 0 Count of Loss of Signal Frames: 0 cbos#show int wan0-0 WAN0-0 ATM Logical Port PVC (VPI 0, VCI 32) is configured. ScalaRate set to Auto AAL 5 UBR Traffic IP Port Enabled cbos#show running Warning: traffic may pause while NVRAM is being accessed [[ CBOS = Section Start ]] NSOS MD5 Enable Password = XXXX NSOS MD5 Root Password = XXXX NSOS MD5 Commander Password = XXXX [[ PPP Device Driver = Section Start ]] PPP Port User Name = 00, "XXXX" PPP Port User Password = 00, XXXX PPP Port Option = 00, IPCP,IP Address,3,Auto,Negotiation Not Required,Negotiable ,IP,0.0.0.0 PPP Port Option = 00, IPCP,Primary DNS Server,129,Auto,Negotiation Not Required, Negotiable,IP,0.0.0.0 PPP Port Option = 00, IPCP,Secondary DNS Server,131,Auto,Negotiation Not Require d,Negotiable,IP,0.0.0.0 [[ ATM WAN Device Driver = Section Start ]] ATM WAN Virtual Connection Parms = 00, 0, 32, 0 [[ DHCP = Section Start ]] DHCP Server = enabled [[ IP Routing = Section Start ]] IP NAT = enabled [[ WEB = Section Start ]] WEB = enabled cbos# wtf...? Thank you all very much for taking the time to read this, and the help.

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• Can't communicate between lan ports on openwrt router

  - by ScaryAardvark

  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 ports. i.e. if I have one computer connected on lan port 1 and I try to ping another computer on lan port 2 then I get "destination unreachable". I can ping both computers from the router itself and can also ping each computer from a seperate laptop connected wirelessly. All computers are in the same subnet range (10.0.0.?/24). I suspect that I may need to configure a vlan on the switch but everytime I try and do this with various google'ed configuration I keep freezing out all lan-ports and I have to revert back using a wirelessly connected laptop. Here's my /etc/config/network: 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 proto 'static' option netmask '255.255.255.0' option ipaddr '10.0.0.1' option _orig_ifname 'eth0 wlan0' option _orig_bridge 'true' option ifname 'eth0' config adsl-device 'adsl' option fwannex 'a' option annex 'a2p' config interface 'wan' option _orig_ifname 'nas0' option _orig_bridge 'false' option proto 'pppoa' option encaps 'vc' option atmdev '0' option vci '38' option vpi '0' option username '?????????????' option password '??????????????' Any help would be warmly received. Here's some more config stuff. root@OpenWrt:~# ifconfig -a br-lan Link encap:Ethernet HWaddr 00:24:A5:BD:66:08 inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:226576 errors:0 dropped:346 overruns:0 frame:0 TX packets:269292 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:26771676 (25.5 MiB) TX bytes:183986450 (175.4 MiB) eth0 Link encap:Ethernet HWaddr 00:24:A5:BD:66:08 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) ifb0 Link encap:Ethernet HWaddr 36:60:EC:DF:13:A1 BROADCAST NOARP MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) ifb1 Link encap:Ethernet HWaddr 4A:7B:75:67:54:E0 BROADCAST NOARP MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:780 errors:0 dropped:0 overruns:0 frame:0 TX packets:780 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:58369 (57.0 KiB) TX bytes:58369 (57.0 KiB) mon.wlan0 Link encap:UNSPEC HWaddr 00-24-A5-BD-66-08-00-48-00-00-00-00-00-00-00-00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2424 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:320188 (312.6 KiB) TX bytes:0 (0.0 B) pppoa-wan Link encap:Point-to-Point Protocol inet addr:81.136.179.204 P-t-P:81.134.80.1 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:258894 errors:0 dropped:0 overruns:0 frame:0 TX packets:212976 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:177341656 (169.1 MiB) TX bytes:25192459 (24.0 MiB) wlan0 Link encap:Ethernet HWaddr 00:24:A5:BD:66:08 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:204063 errors:0 dropped:0 overruns:0 frame:0 TX packets:245516 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:32 RX bytes:26613140 (25.3 MiB) TX bytes:162799765 (155.2 MiB) root@OpenWrt:~# brctl show bridge name bridge id STP enabled interfaces br-lan 8000.0024a5bd6608 no wlan0 eth0 root@OpenWrt:~# swconfig dev eth0 show Global attributes: enable_vlan: 0 Port 0: pvid: 0 link: port:0 link:up speed:1000baseT full-duplex txflow rxflow Port 1: pvid: 0 link: port:1 link:down Port 2: pvid: 0 link: port:2 link:down Port 3: pvid: 0 link: port:3 link:down Port 4: pvid: 0 link: port:4 link:up speed:100baseT full-duplex txflow rxflow auto Port 5: pvid: 0 link: port:5 link:up speed:100baseT full-duplex txflow rxflow auto Regards Mark.

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• Using a Dell DRAC virtual console through a NAT firewall

  - by jetboy

  I have two Dell Poweredge R210 servers, both running Ubuntu 10 Server x64. Server A has a Dell DRAC ILO card (on 172.16.96.91), and both the server and the DRAC use Server B as a gateway (with server B's WAN IP being xxx.xxx.xxx.xx). Server B uses the following NAT rules in IPTables to route traffic through to Server A's DRAC: *NAT --append PREROUTING --in-interface eth1 --protocol tcp --destination xxx.xxx.xxx.xx --destination-port 8019 --jump DNAT --to-destination 172.16.96.91:443 --append POSTROUTING --out-interface eth1 --jump SNAT --to-source xxx.xxx.xxx.xx This works fine for accessing Server A's DRAC via Server B, apart from the Java virtual console. This fails with the following error: com.sun.deploy.net.FailedDownloadException: Unable to load resource: https://xxx.xxx.xxx.xx:443/software/avctKVM.jar at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source) etc. I know that the Java console uses port 5900, and possibly ports 83 and 5891. Can anyone help me in getting this working?

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• Using pfSense, OpenVPN Connects but Still Can't See the Network

  - by nicorellius

  I am having an OpenVPN issue. I have a pfSense box at home configured to allow traffic through a VPN tunnel. The client computer is Windows XP Home, behind a standard Comcast connection and a Netgear wireless router. I use OpenVPN to access my work network (from where I am trying to get out of in this post) from home (with an XP Pro machine behind pfSense), and this works fine. The client config is similar but has the changes specific to my setup... Here is my XP Home config: client dev tun proto tcp remote pfsense.*.org 1194 (starred out by me) resolv-retry infinite nobind persist-key persist-tun ca ca.crt cert client.crt key client.key ns-cert-type server comp-lzo verb 3 When I launch the OpenVPN GUI, the Tunnel TAP network connection turns red, and I can right-click that to connect to the server. Everything seems to work fine until I browse for the actual network. The Tunnel TAP connection turns green and it says connected to 10.1.1.6 (I have tried different IP pools here too with no luck). I can see the internal network fine, but my home network behind pfSense is not there. I have tried browsing there by using Tools Map Network Drive, using the browser, with no success. When I open the command line on the client and use the ipconfig -all command, I get the following: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : TAP-Win32 Adapter V9 Physical Address. . . . . . . . . : *** (starred out by me) Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 10.1.1.6 Subnet Mask . . . . . . . . . . . : 255.255.255.252 Default Gateway . . . . . . . . . : DHCP Server . . . . . . . . . . . : 10.1.1.5 Lease Obtained. . . . . . . . . . : Monday, March 15, 2010 1:18:37 PM Lease Expires . . . . . . . . . . : Tuesday, March 15, 2011 1:18:37 PM I noticed that the default gateway is not present. Could this be my problem? I am still relatively new to firewalls, VPN, and network configuration so I'm sure I am messing up something simple. Oh yah, I should note that I have firewall rules configured for pfSense to allow traffic through the WAN and the LAN. At first there was just the WAN firewall rule, because that is what I got from the literature I was reading. I then created a LAN rule as well, but I'm not sure if this was correct. Neither way works, though. Screen shots below: Any help is much appreciated.

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• NAT: Exposing SQL Server 2008 Express to the internet

  - by Yves

  Hi, I have a Windows Server 2003 SP2 machine with SQL Server 2008 Express installed. I have my network configured with a NAT. Internal clients can access the instance of SQL Server without a problem. I would like to enable SQL Server to be accessible from anywhere on the the internet. I am not sure how to allow my NAT firewall to allow that. I tried adding the port 1443 to it but I still can't access it from a remote machine. How can you make a given SQL Server available to the WAN? Any help would be greatly appreciated. Thank you

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• DD-WRT with native IPv6

  - by Matt

  My ISP provides native IPv6 support (ie. I can plug in my computer straight into the WAN and get an IPv6 address). However I can not get this working on DD-WRT. When I enable IPv6 and radvd in DD-WRT, the router gets in IPv6 address, but the devices on my LAN do not. I tried looking at the DD-WRT wiki, but this only displayed instructions for tunneling or other methods where native support isn't available. I found a small amount of sites thorough searching, but none of the methods these sites described gave my computers each a global IPv6 address. In addition, SSHing into the router using ping6 on sites such as ipv6.google.com causes "host unreachable" errors. Has anyone using DD-WRT configured a successful setup with native IPv6? I am using a Netgear WNDR3700 v2, with DD-WRT build 17201

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• Time Machine + 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 Machine hooked up to it from LAN1 (on the Ubee) to the WAN port on the TM. The problems started occurring here. I figured the settings would be these: Ubee Configuration mode: Bridge DHCP: Off TM 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 TM 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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• Airport Extreme roaming setup

  - by Daniel Johansson

  We've got three Apple AirPort extremes and want to setup them as a roaming wlan network on my company. My question is what's the correct setup for this? All three AP:s is supposed to create the same wireless network "MyWlan" and we want roaming supoprt between them so that client can move from floor to floor without having to switch wlan or reconnect. We don't want to use any kind of DHCP or NAT on the AirPorts, only bridge mode. Do we connect the AirPorts to the lan/ethernet using the WAN port or one of the LAN ports? What's the correct settings in the config utility? Have one of the AirPorts create a network and setup the other two to extend the created network from AirPort 1 or have them all create the same network and set the same wlan password?

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• Profile of Scott L Newman

  - by Ratman21

  To:       Whom It May Concern From: Scott L Newman Date:   4/23/2010 Re:      Profile Who is he, what can he do? Two very good questions. #1. I am a 20 + years experience Information Technology Professional (hold on don’t hit delete yet!). Who is not over the hill (I am on top of it) and still knows how to do (and can still do) that thing call work! #2. A can do attitude, that does not allow problems to sit unfixed. I have a broad range of skills, including: Certified CompTIA A+, Security+ and Network+ Technician §         2.5 years (NOC) Network experience on large Cisco based Wan – UK to Austria §         20 years experience MIS/DP – Yes I can do IBM mainframes and Tandem non-stops too §         18 years experience as technical Help Desk support – panicking users, no problem §         18 years experience with PC/Server based system, intranet and internet systems §         10+ years experienced on: Microsoft Office, Windows XP and Data Network Fundamentals (YES I do windows) §         Strong trouble shooting skills for software, hard ware and circuit issues (and I can tell you what kind of horrors I had to face on all of them). §         Very experienced on working with customers on problems – again panicking users, no problem §         Working experience with Remote Access (VPN/SecurID) – I didn’t just study them I worked on/with them §         Skilled in getting info for and creating documentation for Operation procedures (I do not just wait for them to give it to me I go out and get it. Waiting for info on working applications is, well dumb) Multiple software languages (Hey I have done some programming) And much more experiences in “IT” (Mortgage, stocks and financial information systems experience and have worked “IT” in a hospital) Can multitask, also have ability to adapt to change and learn quickly. (once was put in charge of a system that I had not worked with for over two years. Talk about having to relearn and adapt to changes fast. But I did it.)   The summarization is that I know what do, know keep things going and how to fix it when it breaks.   Scott L. Newman Confidential

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• Dedicate a NIC to a Virtualbox VM

  - by John Gardeniers

  On a machine with multiple NICs, running either Windows or Linux, is it possible to dedicate a NIC to a VM such that the host won't even try to use it for itself? I suspect it isn't even possible but if it is, which OS and version and just how would I set it up? The reason for this, apart from academic curiosity, is that I'm trying to set up a network lab for testing purposes. I currently have only a single spare machine, otherwise this wouldn't be an issue. One of the VMs will be the firewall for this lab network, so will need a dedicated NIC for the WAN interface. Neither ESXi nor Xen server will run on the machine, so I have to use a host OS.

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• OpenVPN make redirect-gateway optional

  - by Tuinslak

  Hi there, I'm currently running an OpenVPN server for multiple clients. All traffic is directed through the VPN (it's set up as gateway; push "redirect-gateway def1"). So far, all is working fine. However, I'd like to connect a couple of servers to this virtual private network, without these servers using the OVPN daemon as gateway. These servers have to be accessible from both their WAN as well as their LAN IP address. Certain services will be accessible only from the LAN side. Is there any way, for a client, to ignore the push redirect-gateway option? Kind regards, Tuinslak

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• Check packet vlan tag using Tap virtual interface

  - by ankit

  Hi all, I am trying to learn how to implement virtual interfaces using the Tap driver. So far my understanding is that using the tap driver I can create a virtual interface and then have a userspace program attach to this interface to analyse the data coming into this device. Now what if I attach a cisco switch to my LAN interface using a TRUNK link, forward all the packets coming into the LAN interface to the virtual tap interface and then in my program attached to this interface do some coding to analyze the vlan tag in the packet and only allow certain vlans to be forwarded to the WAN interface ? Does this sound plausible or is there is flaw in my basic understanding ? Thanks for the help! ankit

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• Poor home office network performance and cannot figure out where the issue is

  - by Jeff Willener

  This is the most bizarre issue. I have worked with small to mid size networks for quite a long time and can say I'm comfortable connecting hardware. Where you will start to lose me is with managed switches and firewalls. To start, let me describe my network (sigh, shouldn't but I MUST solve this). 1) Comcast Cable Internet 2) Motorola SURFboard eXtreme Cable Modem. a) Model: SB6120 b) DOCSIS 3.0 and 2.0 support c) IPv4 and IPv6 support 3-A) Cisco Small Business RV220W Wireless N Firewall a) Latest firmware b) Model: RV220W-A-K9-NA c) WAN Port to Modem (2) d) vlan 1: work e) vlan 2: everything else. 3-B) D-Link DIR-615 Draft 802.11 N Wireless Router a) Latest firmware b) WAN Port to Modem (2) 4) Servers connected directly to firewall a) If firewall 3-A, then vlan 1 b) CAT5e patch cables c) Dell PowerEdge 1400SC w/ 10/100 integrated NIC (Domain Controller, DNS, former DHCP) d) Dell PowerEdge 400SC w/ 10/100/1000 integrated NIC (VMWare Server) 4) Linksys EZXS88W unmanaged Workgroup 10/100 Switch a) If firewall 3-A, then vlan 2 b) 25' CAT5e patch cable to firewall (3-A or 3-B) c) Connects xBox 360, Blu-Ray player, PC at TV 5) Office equipment connected directly to firewall a) If firewall 3-A, then vlan 1 b) ~80' CAT6 or CAT5e patch cable to firewall (3-A or 3-B) c) Connects 1) Dell Latitude laptop 10/100/1000 2) Dell Inspiron laptop 10/100 3) Dell Workstation 10/100/1000 (Pristine host, VMWare Workstation 7.x with many bridged VM's) 4) Brother Laser Printer 10/100 5) Epson All-In-One Workforce 310 10/100 5-A) NetGear FS116 unmanaged 10/100 switch a) I've had this switch for a long time and never had issues. 5-B) NetGear GS108 unmanaged 10/100/1000 switch a) Bought new for this issue and returned. 5-C) Linksys SE2500 unmanaged 10/100/1000 switch a) Bought new for this issue and returned. 5-D) TP-Link TL-SG10008D unmanaged 10/100/1000 a) Bought new for this issue and still have. 6) VLan 1 Wireless Connections (on same subnet if 3-B) a) Any of those at 5c b) HP Laptop 7) VLan 2 Wireless Connection (on same subnet if 3-B) a) IPad, IPod b) Compaq Laptop c) Epson Wireless Printer Shew, without hosting a diagram I hope that paints a good picture. The Issue The breakdown here is at item 5. No matter what I do I cannot have a switch at 5 and have to run everything wireless regardless of router. Issues related to using a switch (point 5 above) SpeedTest is good. Poor throughput to other devices if can communicate at all. Usually cannot ping other devices even on the same switch although, when able, ping times are good. Eventual lose of connectivity and can "sometimes" be restored by unplugging everything for several days, not minutes or hours but we're talking a week if at all. Directly connect to computer gives good internet connection however throughput to other devices connected to firewall is at best horrible. Yet printing doesn't seem to be an issue as long as they are connected via wireless. I have to force the RV220W to 1000Mb on the respective port if using a Gig Switch Issues related to using wireless in place of a switch (point 5 above) Poor throughput to other devices if can communicate. SpeedTest is good. Bottom line Internet speeds are awesome. By the way, Comcast went WAY above and beyond to make sure it was not them. They rewired EVERYTHING which did solve internet drops. Computer to computer connections are garbage Cannot get switch at 5 to work, yet other at 4 has never had an issue. Direct connection, bypass switch, is good for DHCP and internet. DNS must be on server, not firewall. Cisco insists its my switches but as you can see I have used four and two different cables with the same result. My gut feeling is something is happening with routing. But I'm not smart enough to know that answer. I run a lot of VM's at 5-c-3, could that cause it? What's different compared to my previous house is I have introduced Gigabit hardware (firewall/switches/computers). Some of my computers might have IPv6 turned on if I haven't turned it off already. I'm truly at a loss and hope anyone has some crazy idea how to solve this. Bottom line, I need a switch in my office behind the firewall. I've changed everything. The real crux is I will find a working solution and, again, after days it will stop working. So this means I cannot isolate if its a computer since I have to use them. Oh and a solution is not throwing more money at this. I'm well into $1k already. Yah, lame.

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• Setup Linksys 3200 remote access

  - by Greg

  I'm trying to setup remote access for my linksys 3200 so that I can configure it through the WAN port. I have turned on remote access, however when I try to connect I get a 404 error. The settings I have are: When I try to access xxx.xxx.xxx.xxx:9999 I just get a 404 error. I have allowed RDP access to a computer behind the router and this works fine on the same IP address. Any idea's on what else I have to do to allow remote management access? UPDATE: I tried changing the port to 80 and it works. Change it back to any other number and it doesn't work. Modem is setup with a DMZ to the router's IP. Why does it only work on port 80? BTW I can't use port 80 because there is a website hosted behind the router.

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• Sonicwall networking

  - by Syed

  My Sonicwall LAN subnet is 192.168.1.0/24 X0: LAN IP 192.168.1.253 I also have intranet router 192.168.1.108 routing to 192.168.2.0/24 network. Internet is through WAN (X1) is all working fine. My LAN PC's can connect to intranet 192.168.2.0/24 via static route from LANsubnet to 192.168.2.0/24 as 192.168.1.108 as gateway. Now I have LAN2 10.2.1.254 (10.2.1.0/24)on X4 port. I can access Internet from LAN2, now I want to allow intranet from LAN2. What static routes do I need to make this work?

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• Reliable cheap or free DNS service?

  - by superwormy

  I'm looking for a reliable free or cheap DNS service. I've used FreeDNS at FreeDNS.Afraid.org in the past, but it doesn't always seem reliable... sometimes people say they can't access my website (sometimes I can't access it either) by domain name, and yet if I type in the IP address it works fine, so I assume it's some sort of DNS problem. Are there any other cheap or free DNS services out there? I need something reliable that I can manage via a web interface (or scripts if they have an API) that I can use to manage the DNS for ~100 domain names. EDIT: To be clear, I'm looking for DNS hosting, not DNS servers to use for my WAN connection.

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• Unable to access router even though internet works

  - by Tom Kaufmann

  I had access to my router and my internet was also working fine, but I was trying to do a port forward of 80 to my local machine and in the process I made a mistake. I went into Remote Management and for port 80 there were a few options like LAN, WAN, All. I accidently clicked "all" and then clicked "Disable". The problem is that I am no more able to access my router using 192.168.1.1, although my internet works. If I do a ping 192.168.1.1 I am able to receive the response, but I am no longer able to browse the internet. How can I fix this issue? I am using a zyxel p-660hn-t1a router given by my ISP.

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• Forwarding MySQL connection with iptables and differents network interfaces

  - by Emilio Nicolás

  I have a PC with Ubuntu as a router. It has a 3G connection with a public IP to the Internet, and there is a private wireless subnet. So it has two active interfaces: ppp0: public IP (WAN) wlan0: private IP (LAN) With iptables I wannt to forward every MySQL connection (port 3306) to a local machine (10.42.43.10) of the subnet. I type these iptables commands: iptables -A PREROUTING -t nat -i ppp0 -p tcp --dport 3306 -j DNAT --to 10.42.43.10:3306 iptables -A FORWARD -p tcp -i ppp0 -o wlan0 -d 10.42.43.10 --dport 3306 -j ACCEPT But it doesn't work. telnet publicip 3306 fails :-( Any help will be appreciated. Thanks!

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• Due to the Classes

  - by Ratman21

  Why does it seem that I am always saying sorry (or in Japanese Gomennasi)?  Well I am late again for blog as you can see. The CCNA class’s part 1 (also known as CCENT) was, well more intense than all of the certification classes before it.   The teacher was cramming as much as he could into us during the week and it was hard to come home and do much more than fall into bed (Well I was doing still doing my Job search and checking up on my web sites and groups).   But I didn’t have much left in the way of blogging (Which by the way is now in 3 different sites). Even though it was hard some times, I really liked the fact I was getting back to something like (and mean really like, in fact I like Cisco routers than some people I know). At the class, I got some software that allows me to simulate setting up and troubles shoot Lan’s or Wan’s.   When we weren’t getting facts for the test thrown at us, we were doing labs with this software. It was fun for me to be able to use the CISCO router commands and trouble shoot router issues. Even if it was just a sim. So now it is study, study, take practices tests and do the labs. I took the week end and more off after cram CCENT week but, now I am back at it.  Also I could not keep up with my Love Dare book during week of the class. No I did not stop or forget what I already learned. I just put the next dare on hold. Well the hold is off starting tomorrow and tonight I think I am going to write a new cover letter. Let’s see what else I can get done tonight. Hmm I think I will try to do a sim of my home wireless LAN and study for CCENT test in about 3 weeks.   So see you tomorrow (I hope).

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• Cablemodem frequent connection loss

  - by LVDave

  I have a Linksys BEFCMU10 cablemodem and a WRT54GL router with Tomato 1.27 firmware on Cox cable. My question is this: I get what seems to be random disconnects from the internet, where the cable modem lights are still normal, but I can connect nowhere, either via a url or an ip address. At the same time these disconnects are happening, I can go to the router's Tomato management webpage, and release/renew my external IP address from Cox's DHCP server. I've had Cox look at the signal levels on the cable modem, and they say they look fine. What brings back the modem, for sometimes as long as 17 days, is several power-cycles of the modem. I don't understand the underlying cable modem technology too well, but I do know that if I'm able to release/renew the DHCP-provided WAN address, I'd expect that the cable modem was working ok... Anybody have any ideas??

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• Server with 3 public IP and iptables

  - by Juan

  I have a linux box with two NIC cards: eth0 and eth1. In one card i have 3 public IP: eth0 = 10.10.10.1, eth0:1= 10.10.10.2 and eth0:2= 10.10.10.3 In the other card i have one local IP eth1 = 192.9.200.1 I want to redirect all the wan traffic for 10.10.10.2 to the LAN 192.9.200.2 and the same for 10.10.10.3 to 192.9.200.3 I have tried with this rule but doesn't work iptables -t nat -A PREROUTING -i eth0 -d 10.10.10.2 -j DNAT --to-destination 192.9.200.2 iptables -t nat -A PREROUTING -i eth0 -d 10.10.10.3 -j DNAT --to-destination 192.9.200.3 IP forward is enabled in /etc/sysctl.conf Can you help me, please.

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• Trying to Host Server for External Access - Apache, VirtualBox & Portforwarding

  - by Tspoon

  Banging my head on the wall at this stage.... trying to host my Apache site on Ubuntu 12.10 with VirtualBox. Running Windows 8 host. Things I've done: Ensured Apache is listening on ports 80, 443 and 8080 (for thoroughness) tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 3355/httpd tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 3355/httpd tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 3355/httpd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 681/sshd VM is using bridged network connection Assigned a static IP to my Ubuntu VM, which can be accessed fine from within network. Forwarded TCP ports 80, 8080, 443 on the static IP of VM on my router Given my VM a static NAT Address Turned off Ubuntu firewall and router firewall Read on forums that my ISP (Eircom) allow port 80 to be used And I still can't access my site using the WAN/External IP (checked internally and using CanYouSeeMe.org). It says all the ports I mentioned are closed. I'm really at a loss of what to try next... Am I missing something silly here? Note: I haven't assigned a static IP address within the router, on within the VM. And DHCP server is enabled. Is that bad?

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• SSH via DHCP server

  - by SFault

  I have a DHCP server setup and I can't seem to connect to anything through SSH. When I'm logged in to the server itself, I can SSH. But when I connect any machine to the DHCP server, that machine can SSH but every server I SSH to asks for a password when the normal behavior (when not connected to the DHCP server) does not. Here are the contents of my iptables script that are related to port 22. $IPT -t nat -A PREROUTING -i $LAN -p tcp --dport 22 -j REDIRECT --to-port 22 $IPT -A FORWARD -i $LAN -p tcp --dport 22 -j ACCEPT $IPT -A INPUT -i $LAN -p tcp --dport 22 -j ACCEPT $IPT -A INPUT -i $WAN -p tcp --dport 22 -j ACCEPT $IPT -A OUTPUT -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT $IPT -A INPUT -i $LAN -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT Am I missing something?

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• How do I set up failover for a single web server using two ISPs?

  - by Travis

  I have one web server and two WAN connections (1 cable, 1 DSL). DNS is run offsite, and points to the IP address assigned by one of the ISPs. How can I have the second connection take over when the primary one fails? I have seen that it is possible to have two A records, each pointing to a different IP, but it has several problems. What's the real solution to this? I imagine this is a very common issue. Thanks in advance!

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• Huawei b260a gsm modem not forwarding gre for pptp tunnel

  - by Priit

  I have a huawei gsm modem that does not want to let gre through. The goal is to connect into a pptp server thats behind the huawei. In the modems port forwarding settings theres a ready made profile for pptp (1723). After activating that the MS pptp test tools show that connection is being initiated but no gre packets make it to the server. After taking a closer look into the modems iptables rules theres nothing in there about gre. So I tried making gre rules manualy into forward and preroute chains without any success what so ever. As far as I can tell theres no ip_gre module present on the device is that needed for gre forwarding? Thats what I'm afraid of that it doesn't support gre in NAT but how would I turn it into a bridge? The wan interface is ppp0 so bridging it with eth0 would not work right? Is there some iptables rule I could use to make the modem let all the traffic just straight through?

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