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pfSense router on a LAN with two gateways

- by JohnCC

I have a LAN with an ADSL modem/router on it. We have just gained an alternative high-speed internet connection at our location, and I want to connect the LAN to it, eventually dropping the ADSL. I've chosen to use a small PFSense box to connect the LAN to the new WAN connection. Two servers on the LAN run services accessible to the outside via NAT using the single ADSL WAN IP. We have DNS records which point to this IP. I want to do the same via the new connection, using the WAN IP there. That connection permits multiple IPs, so I have configured pfSense using virtual IP's, 1:1 NAT and appropriate firewall rules. When I change the servers' default gateway settings to the pfSense box, I can access the services via the new WAN IPs without a problem. However, I can no longer access them via the old WAN IP. If I set the servers' default gateway back to the ADSL router, then the opposite is true - I can access the services via the ADSL IP, but not via the new one. In the first case, I believe this is because an incoming SYN packet arrives at the ADSL WAN IP, and is NAT'd and sent to the internal IP of the server. The server responds with a SYN/ACK which it sends via its default gateway, the pfSense box. The pfSense box sees a SYN/ACK that it saw no SYN for and drops the packet. Is there any sensible way around this? I would like the services to be accessible via both IPs for a short period at least, since once I change the DNS it will take a while before everyone picks up the new address.

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ISA 2006 Ent with NLB configuration

- by Nagori

Hello We have created to virtual machines and installed ISA 2006 Ent and enable NLB configuration, each machine has two NIC one connected to LAN and other connected to DMZ, we are not able to ping DMZ subnet IP of ISA from another machine which is on same DMZ subnet even though we have diable the all ISA services (including firewall). But we can ping LAN IP from all our internal subnets and this ping is working with ISA services are started or stop status Thank you

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Networking two computers running Windows XP [closed]

- by user38100

Possible Duplicate: Setting up a LAN connection in Windows How can I connect two computers, both running Windows XP, to each other using a single LAN cable?

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Easy management of multiple connections

- by pistacchio

Hi, on a Windows 7 machine I need to switch back and forth two connections: the LAN connection (that works behind a proxy) and a wireless connection via a USB modem. This requires every time to activate / deactivate two connections in the manager and switch on / off the LAN settings. I don't think there is some way to keep two connections alive and specify which one to use based on the program, but my question is: is there a simple little utility that makes switching the connection one-click easy and fast? Thanks

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Ask HTG: Using the Malicious Software Removal Tool, Scheduling Computer Startups, and Diagnosing an Overheating Laptop

- by Jason Fitzpatrick

Once a week we select a few questions from the pile of emails we answer and share the solutions with the greater readership; this week we’re looking at the Microsoft Malicious Software Removal Tool, scheduling computer startups, and how to diagnose an overheating laptop. HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast! Amazon’s New Kindle Fire Tablet: the How-To Geek Review

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Why does my MySQL remote-connection fail (VLAN)?

- by Johannes Nielsen

ubuntu-community! Again I have a problem with my special friend MySQL :D I have got two servers - a database-server and a web-server - who are connected via VLAN. Now I want the web-server to have remote access to the database-server's MySQL. So I created the user user in mysql.user. user's Host is xxx.yyy.zzz.9 which is the internal IP-address of the web-server. xxx.yyy.zzz.0 is the network. I also created user with Host % . As long as I use MySQL on the database-server logging in as user, everything works fine. But trying to log in as user from xxx.yyy.zzz.9 using mysql -h xxx.yyy.zzz.8 -u user -p (where xxx.yyy.zzz.8 is the database-server's internal IP), I get ERROR 2003 (HY000): Can't connect to MySQL server on 'xxx.yyy.zzz.8' (110) So I tried to activate Bind-Address in the my.cnf file. Well, if I use xxx.yyy.zzz.8, nothing changes. But if I try xxx.yyy.zzz.9 and try to restart MySQL, I get mysql stop/waiting start: Job failed to start I checked the log files and found - nothing. The database-server's MySQL doesn't even register, that the web-server tries to connect remotely. My idea is, that maybe I didn't configure the VLAN properley, even though I asked someone who actually knows such stuff and he told me, I did everything right. What I wrote into /etc/networking/interfaces is: #The VLAN auto eth1 iface eth1 inet static address xxx.yyy.zzz..8 netmask 255.255.255.0 network xxx.yyy.zzz.0 broadcast xxx.yyy.zzz.255 mtu 1500 ifconfig returns eth1 Link encap:Ethernet HWaddr xxxxxxxxxxxxxx inet addr:xxx.yyy.zzz.8 Bcast:xxx.yyy.zzz.255 Mask:255.255.255.0 inet6 addr: xxxxxxxxxxxxxxx/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:241146 errors:0 dropped:0 overruns:0 frame:0 TX packets:9765 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:17825995 (17.8 MB) TX bytes:566602 (566.6 KB) Memory:fb900000-fb920000 for the eth1, what is, what I configured. (This is for the database-server, the web-server looks similar). ethtool eth1 returns: Settings for eth1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised pause frame use: No Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on MDI-X: Unknown Supports Wake-on: d Wake-on: d Current message level: 0x00000003 (3) drv probe Link detected: yes (This is for the database-server, the web-server looks similar). Actually I think, everything is right, but it still doesn't work. Is there someone with an idea? EDIT: I commented ou Bind-Address in my.cnf after it didn't work.

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Network Access: I can't access 192.168.1.101 from 192.168.1.102.

- by takpar

Hi, I'm running Ubuntu 10.04 on my PC with IP 192.168.1.101. every thing work fine, e.g. my web server is running and I can see http://localhost/ or http://192.168.1.101 properly. But the problem is that I cannot see my PC from my laptop at 192.168.1.102 e.g. at my laptop http://192.168.1.101 gives Connection timed out in browser. or trying to telnet on any port leads to: telnet: Unable to connect to remote host: Connection timed out laptop is running a fresh install of Ubuntu as well and there is no setup for firewall stuff in both computers. PS: Both computers can ping each other well. The router is a cicso linksys wireless ADSL modem. Currently, I can connect to FTP server on the Windows running on 192.168.1.102 from 192.168.1.101 without problem. Theses are commands ran on my PC, 192.168.1.101: ifconfig: adp@adp-desktop:~$ ifconfig eth0 Link encap:Ethernet HWaddr 00:26:18:e1:8e:cf inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe70::226:18ff:fee1:8ecf/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1831935 errors:0 dropped:0 overruns:0 frame:0 TX packets:1493786 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1996855925 (1.9 GB) TX bytes:215288238 (215.2 MB) Interrupt:27 Base address:0xa000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:951742 errors:0 dropped:0 overruns:0 frame:0 TX packets:951742 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:494351095 (494.3 MB) TX bytes:494351095 (494.3 MB) vmnet1 Link encap:Ethernet HWaddr 00:50:46:c0:00:01 inet addr:192.168.91.1 Bcast:192.168.91.255 Mask:255.255.255.0 inet6 addr: fe70::250:56ff:fec0:1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:50 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) vmnet8 Link encap:Ethernet HWaddr 00:50:46:c0:00:08 inet addr:192.168.156.1 Bcast:192.168.156.255 Mask:255.255.255.0 inet6 addr: fe70::250:56ff:fec0:8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:51 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) port 80 is set to 0.0.0.0 well: adp@adp-desktop:~$ netstat -ln | grep 'LISTEN ' tcp 0 0 127.0.0.1:52815 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:4559 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:4369 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:7634 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:5269 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:5280 0.0.0.0:* LISTEN tcp 0 0 127.0.1.1:7777 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:33601 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:5222 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN tcp6 0 0 :::139 :::* LISTEN tcp6 0 0 ::1:631 :::* LISTEN tcp6 0 0 :::445 :::* LISTEN /etc/hosts.deny is empty: adp@adp-desktop:~$ cat /etc/hosts.deny # /etc/hosts.deny: list of hosts that are _not_ allowed to access the system. # See the manual pages hosts_access(5) and hosts_options(5). # # Example: ALL: some.host.name, .some.domain # ALL EXCEPT in.fingerd: other.host.name, .other.domain # # If you're going to protect the portmapper use the name "portmap" for the # daemon name. Remember that you can only use the keyword "ALL" and IP # addresses (NOT host or domain names) for the portmapper, as well as for # rpc.mountd (the NFS mount daemon). See portmap(8) and rpc.mountd(8) # for further information. # # The PARANOID wildcard matches any host whose name does not match its # address. # # You may wish to enable this to ensure any programs that don't # validate looked up hostnames still leave understandable logs. In past # versions of Debian this has been the default. # ALL: PARANOID netstat -l: adp@adp-desktop:~$ netstat -l Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 localhost:52815 *:* LISTEN tcp 0 0 *:hylafax *:* LISTEN tcp 0 0 *:www *:* LISTEN tcp 0 0 *:4369 *:* LISTEN tcp 0 0 localhost:7634 *:* LISTEN tcp 0 0 *:ftp *:* LISTEN tcp 0 0 *:xmpp-server *:* LISTEN tcp 0 0 localhost:ipp *:* LISTEN tcp 0 0 *:smtp *:* LISTEN tcp 0 0 *:5280 *:* LISTEN tcp 0 0 adp-desktop:7777 *:* LISTEN tcp 0 0 *:33601 *:* LISTEN tcp 0 0 *:xmpp-client *:* LISTEN tcp 0 0 localhost:mysql *:* LISTEN tcp6 0 0 [::]:netbios-ssn [::]:* LISTEN tcp6 0 0 localhost:ipp [::]:* LISTEN tcp6 0 0 [::]:microsoft-ds [::]:* LISTEN udp 0 0 *:bootpc *:* udp 0 0 *:mdns *:* udp 0 0 *:47467 *:* udp 0 0 192.168.1.10:netbios-ns *:* udp 0 0 192.168.91.1:netbios-ns *:* udp 0 0 192.168.156.:netbios-ns *:* udp 0 0 *:netbios-ns *:* udp 0 0 192.168.1.1:netbios-dgm *:* udp 0 0 192.168.91.:netbios-dgm *:* udp 0 0 192.168.156:netbios-dgm *:* udp 0 0 *:netbios-dgm *:* raw 0 0 *:icmp *:* 7 netstat -rn: adp@adp-desktop:~$ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.91.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1 192.168.156.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 commands on the laptop, 192.168.1.102: ifconfig: root@fakeuser-laptop:~# ifconfig eth0 Link encap:Ethernet HWaddr 00:1c:33:a2:31:15 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) Interrupt:21 eth1 Link encap:Ethernet HWaddr 00:2d:d9:3e:1f:6c inet addr:192.168.1.102 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe70::21d:d9ff:fe3e:1f6c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5681 errors:0 dropped:0 overruns:0 frame:10313 TX packets:6717 errors:6 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4055251 (4.0 MB) TX bytes:779308 (779.3 KB) Interrupt:18 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:206 errors:0 dropped:0 overruns:0 frame:0 TX packets:206 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:15172 (15.1 KB) TX bytes:15172 (15.1 KB) netstat -rn: root@fakeuser-laptop:~# netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth1

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Using DesktopCouch without Ubuntu One?

- by burli

I want to know if it is possible to use DesktopCouch without UbuntuOne, but with a local CouchDB Server. I found a pairing Tool, but this crashes, when I try to pair two computer. I can find the local Desktop Couches with the Avahi Zeroconf Browser and it should be possible to find them with Python and start a replication To make a long story short: I want to sync DesktopCouch Databases in my local network without Ubuntu One. Is that possible?

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Use two networks at the same time?

- by Christopher

I want to use Ubuntu 10.10 Server in a classroom, a computer lab whose bandwidth is provided by a local cable ISP. That's no problem, though the school network has an IP printer that I want to use. I cannot reach the printer through the cable Internet. But, I have two network cards. How is it possible to use both networks at once? eth0 (static 192.168.1.254) is plugged into a four-port router, 192.168.1.1. On the public side of the four-port router is Internet provided by the cable company. I also have the classroom workstations plugged into a switch. The switch is plugged into the four-port router. The whole classroom is wired into the cable Internet. The other NIC, eth1, could it be plugged into an Ethernet jack in the wall? It uses the school network, and I might receive by DHCP an IP address like 10.140.10.100, with the printer on maybe 10.120.50.10. I was thinking about installing the printer on the server so that it could be shared with the workstations. But how does this work? Can I just plug eth1 into the school network and access both LANs? Thanks for any insight

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How to get Ubuntu automatically connect to (windows, cabled & shared) network folder?

- by Koen

Through the normal processes I enter my shared music folder on my Windows computer, i.e.: Places Network Windows pc Music. After rebooting my Ubuntu laptop, however, this connection isn't automatically set again. My question: How do I get Ubuntu to automatically connect to that shared folder after login (while first checking whether the Windows computer is 'online')? This because I added the folder to the Banshee Library, and I currently first have to go to the shared folder manually before Banshee can play the files.

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Wired connection to windows ISC stopped working

- by cmpickle

I have had my Linux box connected to the internet through a Windows computer by wiring them together with a cat5 cable then the Windows is connected wireless to a router. This setup has worked since I got the Linux box but just yesterday stopped working. The changes that occurred were: I changed networking so that I was connecting the Linux box and Windows computer through a second router so during that time the Linux box went through a router to connect to the Windows computer that was still connected wireless to the first router. The Internet didn't work on the Linux box at the time they second router was involved when I removed it and directly connected the Linux box and Windows the Internet worked again. Another thing that changed was that I had disconnected my Windows computer from all network connections and deleted them to make my Ethernet work better. Also at that time my dad had I connect the Windows to a third router and changed some settings in it. After reconnecting this time the connection between the router and the windows would not establish. If anyone has any ideas as to why this is I would greatly appreciate it!

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Ethernet Wired Connection Help

- by user107598

I have recently installed Ubuntu 12.10 onto my Dell Inspiron N5010 and Ive been all over many forums trying to figure out how I can get my ethernet cable to be recognized so I can set up a wired connection. My Network Card is the Realtek RT8139 and from what Ive gathered the ethernet port driver for it is installed. Whenever I run ifconfig in the terminal it says that eth1 is up and running but no matter how I edit the connection I cannot get it to work. If anyone can help it would be greatly appreciated!

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Regulating outgoing traffic on ubuntu VM

- by DazSlayer

I am making a virtual network setup for my high school cybersecurity team to practice. I am connecting all the VMs together through a VPN and then people who are practicing will VPN in and ssh/remote desktop into the different VMs. The problem is that for practicing, they will need root access into the VMs and because the VMs are connecting to my personal network, the VMs pose a security risk to my personal network. Is there any way in either VMWare or VirtualBox or even making an unchangeable iptable (I can make all the windows VMs go thru a linux VM) to prevent people from connecting to my local network via the VM?

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Windows 2012 Server Hyper-V: Cannot see LAN

- by Samuel

I have one NIC on the machine loaded XP on the Hyper-V and had chosen the network as virtual switch. No LAN and no internet shows up on the client. Am I missing something? it used to work in 2008-R2. Details: One network card on machine (Qualcomm Atheros AR8131 PIC-E Gigabit Ethernet controller) The virtual machine hard disk is pointing to and existing XP-SP2 hard disk created using VPC 2007 The Virtual machine Network Adapter is setup as Virtual Switch to the real ethernet controller with Enable virtual LAN identification set to 2 (no other virtual machine is created in the system) After the virtual machine boots LAN shows empty in Control Panel Network Connections (this is XP client) and I also cannot access the internet. XP is showing activation prompt but as far as I know it should not disable the network! Virtual network switch is set to External

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Configure VPN to access remote LAN network on Windows7

- by PiotrK

Situation: I have two Windows7 machines (PC and laptop). I've set PC as VPN server and laptop as VPN client using default built-in W7 network tools. I've disabled use default gateway in remote network on client machine, so client don't try to route all communication through VPN. I've routed port 1723 (TCP/UDP) on NAT to my server and enabled IPSec/PPTP/L2TP passthrough I've put my laptop in indepedent network (basically I've connected it via 3G network), connected to VPN server and checked ipconfig /all I've get: IP Address: 192.168.1.101 Mask: 255.255.255.255 Gateway: (none) LAN mask in server LAN network is 255.255.255.0 - I am surely missing something obvious, but Google doesn't give me any good advices; How can I access local LAN network from remote VPN client? How can I access local shared documents?

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IP Camera working on lan but not on internet

- by Kevin Boyd

My IP cam model is Genius 350TR, I tested the cam at home on lan and internet and it worked. Then I shifted it to an office. It works on the office lan setup but I cannot connect to the ip cam from home. The IP cam is configured for port 192.168.0.30:7070 and it has a port forwarded to publicIP:7071 When I telnet to that public IP it connects to that port. However when I try to access the ip cam from a web browser it only shows me the configuration page and settings and the video is blank and it says connecting for some time and then says disconnected. The cam is configured for HTTP on internet and UDP on Lan. The office setup is ISP --- WifiRouter --- PC With Wifi card --- Switch --- IP CAM Is there a way to debug this problem?

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how to connect public web server to internal LAN

- by DefSol

I have a VPS which is my public web server for all my clients. It's running server 2008 and I would like to have it connect via secure connection to my internal LAN. I would like this to be a route so access is bi-derectional. Have read about Server & Domain isolation, but am concerned this may prevent public views to the webs sites on the server. I currently have a PPTP tunnel, but I'm wanting better security (IPSec or SSL etc) and it's not given my bi derectional access. (In fact my backups aren't copying accross but this could be an acl issue) The goal is to provide easy/automated backups of data & sql db's to my internal LAN, as well as a means to provision new sites & db's from a workflow occuring internally. Internal lan is windows based with ISA 2006 at the perimeter. Thanks

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Use LAN to interface Synergy while having WiFi connected to internet

- by freonix

Similar question and solution I have LAN and WiFi connection, with the WiFi connected to internet and the LAN is simply connected via an Ethernet cable between two computers. I need to get Synergy working without compromising the WiFi internet. I've tried the solution above but couldn't seem to work. Both of the computer are running Windows XP. Even setting the LAN IP to static and under the same subnet doesn't seem to work. Anyone with similar situation and got Synergy to work? edit : Refined the question for clarity. Also, the computer are able to ping each other. Remote desktop can be accessed as well. I suspect the problem lies in Synergy's configuration.

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Sharing VPN access between two computers on the LAN

- by Axelle Ziegler

I have VPN access to several machines in my office from my home machine. I'd like to be able to access those machines from another computer on my LAN, without setuping a second VPN access. Both computers are Windows 7 machines. Is there a way for my "main" computer to share its VPN access to another machine on the LAN? How would one setup this share? I don't think "simple" Internet connection sharing fits my needs because: My LAN already has its own DHCP/Router to access the Internet, and I'd like to keep it this way I can't access the Internet through my VPN connection

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extra managed+unmanaged switches @ home/office -- best (mis)usage scenario? what would you do?

- by locuse

up front -- definitely NOT a mission-critical kind of question. after a 'spring cleaning' of my local office, i've ended up with two 'spare' GigE switches at my home/office -- one managed, capable of VLANs, QoS, etc, and the other unmanaged. i've got more ports than i need. in fact EACH switch has more total ports than i need. but, since i can't have these just sitting around not doing SOMETHING ... ;-) i'm interested in ideas for best combined use of these switches. my local topology is simple: [ net ] -- [ adsl2 modem ] -- [linux firewall/router/DNS ] _______________| | [ some arrangement of the 2 GigE switches ] | ( ... stuff on the lan ... ) [WAP1] [voip ATA] [printer] [desktop1] [mail server] [Xen server [desktop2] ( mostly dev, [desktop3] + file server [desktop4] + media server)] the MailServer is a production mail server the XenServer serves some low vol to the 'net; the MediaServer guest serves ONLY to the LAN is there, e.g., any performance value in segmenting off any of the LAN using the managed switch (VLAN? QoS tagging? something?), feeding the rest into the connected unmanaged switch? or should i simply use one of the switches & be done with it, and use the other for a coffee-cup stand?

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C# - How to detect all IP addresses from a LAN?

- by SAMIR BHOGAYTA

string strHostName = string.Empty; cmbIPAddress.Items.Clear(); // Getting Ip address of local machine... // First get the host name of local machine. strHostName = Dns.GetHostName(); // Then using host name, get the IP address list.. IPHostEntry ipEntry = Dns.GetHostByName(strHostName); IPAddress[] iparrAddr = ipEntry.AddressList; if (iparrAddr.Length 0) { for (int intLoop = 0; intLoop cmbIPAddress.Items.Add(iparrAddr[intLoop].ToString()); }

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USB To Serial under OpenSuse 11.3

- by Lars

I have a LogiLink USB-To-Serial adapter. This has the PL2303 chip inside. When I insert the device: [26064.927083] usb 7-1: new full speed USB device using uhci_hcd and address 9 [26065.076090] usb 7-1: New USB device found, idVendor=067b, idProduct=2303 [26065.076099] usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [26065.076105] usb 7-1: Product: USB-Serial Controller [26065.076110] usb 7-1: Manufacturer: Prolific Technology Inc. [26065.079181] pl2303 7-1:1.0: pl2303 converter detected [26065.091296] usb 7-1: pl2303 converter now attached to ttyUSB0 So the device is recognized and the converter is attached to ttyUSB0. When I do screen /dev/ttyUSB0 9600 I get the error: bash: /dev/ttyUSB0: Permission denied So I went looking in the file permissions. ls -l from the /dev folder reports: crw-rw---- 1 root dialout 188, 0 2011-04-26 15:47 ttyUSB0 I added my user lars to the dialout group. When I use the commands groups under lars it shows that I'm in the group. Though I still recieve the permissions denied error, as lars, and as root. I'm trying to connect to a console cable to configure some Cisco switches. My OS is OpenSuse 11.3 x86_64 with kernel version 2.6.34.7-0.7-desktop.

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USB To Serial under OpenSuse 11.3

- by Exsisto

I have a LogiLink USB-To-Serial adapter. This has the PL2303 chip inside. When I insert the device: [26064.927083] usb 7-1: new full speed USB device using uhci_hcd and address 9 [26065.076090] usb 7-1: New USB device found, idVendor=067b, idProduct=2303 [26065.076099] usb 7-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [26065.076105] usb 7-1: Product: USB-Serial Controller [26065.076110] usb 7-1: Manufacturer: Prolific Technology Inc. [26065.079181] pl2303 7-1:1.0: pl2303 converter detected [26065.091296] usb 7-1: pl2303 converter now attached to ttyUSB0 So the device is recognized and the converter is attached to ttyUSB0. When I do screen /dev/ttyUSB0 9600 I get the error: bash: /dev/ttyUSB0: Permission denied So I went looking in the file permissions. ls -l from the /dev folder reports: crw-rw---- 1 root dialout 188, 0 2011-04-26 15:47 ttyUSB0 I added my user lars to the dialout group. When I use the commands groups under lars it shows that I'm in the group. Though I still recieve the permissions denied error, as lars, and as root. I'm trying to connect to a console cable to configure some Cisco switches. My OS is OpenSuse 11.3 x86_64 with kernel version 2.6.34.7-0.7-desktop.

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COM port on VirtualBox, XP

- by Alex Farber

I am using Sun VirtualBox v. 3.1.4 on WinXP. Host OS is also WinXP. In the Host Machine settings, Serial Ports, Port 1, I set: Enable Serial Port Port Number: COM1 Port Mode: Host Device Port File/Path: COM1 In the Host OS Device Manager I don't see COM1 port. What is wromg?

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How can I login (send text) with minicom?

- by Travis

I am attempting to login from a Linux client to a set top box running Linux via a USB to serial cable. When I power on the device, I can see the init messages scroll past, and I get to the login prompt, like this: (none) login: but I cannot login. The cursor stops flashing as if it is receiving input, but there is no response. My serial port setup is: Device: /dev/ttyUSB0 Bps: 115200 8N1 Hardware Flow Control: Yes Software Flow Control: No Any help would be greatly appreciated!

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