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• Adding 2008 Server to 2008 Domain

  - by Phillip

  Hello, I'm trying to create a lab for testing before I deploy solutions, I'm no experienced IT Administrator, and therefore I come here for help. I'm running 2 Virtual Servers on the same machine on a local connection between those two. They'are able to ping each other. Their names is TSDATA1 and TSDATA2 where TSDATA1 is the Domain Controller. I am able to ping between those two, on both "ping TSDATA1" and "ping 10.0.0.1" which is the IP address of TSDATA1. The IP address of TSDATA2 is 10.0.0.2. I'm trying to join the domain with TSDATA2 both I'm getting this error when trying: Note: This information is intended for a network administrator. If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:\Windows\debug\dcdiag.txt. The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller for domain tsdata.local: The error was: "DNS name does not exist." (error code 0x0000232B RCODE_NAME_ERROR) The query was for the SRV record for _ldap._tcp.dc._msdcs.tsdata.local Common causes of this error include the following: The DNS SRV records required to locate a AD DC for the domain are not registered in DNS. These records are registered with a DNS server automatically when a AD DC is added to a domain. They are updated by the AD DC at set intervals. This computer is configured to use DNS servers with the following IP addresses: 10.0.0.1 One or more of the following zones do not include delegation to its child zone: tsdata.local local . (the root zone) For information about correcting this problem, click Help. I've figured out it has something to do with DNS lookup, but I have no clue what to do. Can anyone help?

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• Need Routing help (tagged/untagged)

  - by TheCleaner

  I really need some help trying to figure some "basic" routing. My brain is fried from being sick for a week and I'm not thinking clearly. Picture below describes my "setup". I'm trying to accomplish routing a user from their workstation to the Juniper SSG520 and then "OUT" through the internet connection. I can't move the connection as it is physically located where the user's switch is. Here's what I CAN do at this point: I can ping from the Juniper SSG520 eth3/3 to 6x.xxx.253.116 from 6x.xxx.253.114 I can ping from the x450 in the top right to 6x.xxx.253.112 from 6x.xxx.253.116 What I CANNOT DO: I cannot ping from the SSG520 eth3/3 to 6x.xxx.253.112 from 6x.xxx.253.114 (basically from the Juniper box to the gateway. I've tried changing port 1 in the x450 VLAN 666 as tagged but when I do that then I can't even ping from the Juniper SSG520 eth3/3 to the VLAN on the x450 (6x.xxx.253.116). I need to route traffic out the eth3/3 interface on the SSG520 THROUGH the 2 x450 Switches and out the internet connection. The caveat is that the 2 x450 switches are connected via fiber over distance and have tagged VLANs in them for the routing. Thoughts? http://img251.imageshack.us/img251/7752/drawing1.jpg

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• server and user directly connected no pinging...

  - by jtzero

  I have a server(fedora 12) with two nics on it, directly connected to say 192.168.1.0 and 192.168.2.0 the route table looks like this Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 192.168.1.1 255.255.255.0 U 0 0 0 eth0 192.168.2.0 * 255.255.255.0 U 0 0 0 eth1 eth0 = 192.168.1.15 eth1 = 192.168.2.1 and a directly connected user (Mythdora) on the 192.168.2.0 network with ip 192.168.2.2 and route table like so Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.2.0 * 255.255.255.0 U 0 0 0 eth0 the cable is a crossover and it works all three nics work -- connected my laptop to either end and assign it a valid 192.168.2.0 ip the pings will work. In fact if I disconnect the server side and plug the eth cable into the laptop and have thte box ping the laptop continually remove the eth cable and plug it back into the server both sides ping... unfortunately the box realizing it's connected to a different pc wipes its route table after say ten minutes or so. if I do a trace route from a box on the 1.0 network to the servers 192.168.2.1 interface never get a reply from it. as a note at one point I could ping the server from the 192.168.2.2 box but the server couldnt ping the 192.168.2.2 box.

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• DL380 G7: Not able to access ILO on DL380 via ssh from a client

  - by user117140

  I have problem where I can't access my ILO(ssh to ILO IP) thru client which is in different network.I am able to ping ILO IP thru this clinet but ssh access is not possible. Is it possible to have ssh to ILO IP from a client which is in different network? FYI, from the same client I can do ssh to server application IP but ssh to this server ILO IP is not possible. Kindly help? Some more info added: ILO IP address is 10.247.172.70 and its VLAN is different than Client VLAN. Client IP address is 10.247.167.80. ping to ILO IP from this client is possible but not ssh. I can do ssh to ILO IP if I try to do it from the server(hostname:node1) having ILO port or from the other node of this cluster itself,So ssh login is enabled. [root@node1 ~]$ssh -v 10.247.173.70 OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to 10.247.173.70 [10.247.173.70] port 22. [root@node1 ~]$ping 10.247.173.70 PING 10.247.173.70 (10.247.173.70) 56(84) bytes of data. 64 bytes from 10.247.173.70: icmp_seq=1 ttl=254 time=0.283 ms 64 bytes from 10.247.173.70: icmp_seq=2 ttl=254 time=0.344 ms 64 bytes from 10.247.173.70: icmp_seq=3 ttl=254 time=0.324 ms 64 bytes from 10.247.173.70: icmp_seq=4 ttl=254 time=0.367 ms

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• Monitoring multiple sites on a single server using OpsView

  - by Kev

  We have several web servers. On each of these servers there can be ~250 web sites. I need to add a HTTP check for each site on each server. Each site has a reserved host header that we know can always be resolved in the format of: w10000.hostchecks.mycompany.com w10020.hostchecks.mycompany.com w11992.hostchecks.mycompany.com ..and so on.. What I want is for there to be a master ping check on the web server's main IP address and then separate HTTP checks for each of the sites on the server. If the master ping test fails then I want the HTTP tests to cease until the master ping check goes OK. I had a stab at this and tried do the following: Create a parent host that does a ping check on the server's main ip address (e.g. server is named WEB0001). For each of the sites that reside on WEB0001: Create a separate Host with a Primary Hostname of wXXXXX.hostchecks.mycompany.com Make WEB0001 the parent host Add a monitor (HTTP check to a special url that is mapped into each site using a virtual directory: H- $HOSTADDRESS$ -u /__hostcheck/IsAlive.aspx -w 5 -c 10 -p 80 However I find that if I down the parent server (WEB0001) the http checks seem to continue. Am I going about this completely the wrong way?

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• Netbook (Samsung N220) on Ubuntu 10.04 slows down WiFi for other computers

  - by Joachim

  I encountered a really odd problem with my new netbook. I am running Ubuntu 10.04 on a Samsung N220 Mito. So far everything worked fine. Now I tried the machine for the first time in our work group where we have a wifi (with internet access) for all laptops. The wifi is controlled by a computer running Suse 9.3 which provides a DHCP server and imposes a firewall. At the moment there is only a macbook in the wifi, where no problems with the internet or wifi connection are encountered. Now coming to my actual problem: In addition to the macbook i connect the Samsung N220 to the Wifi. Problem: My download speed is for some reason limited to 70KB/s max. This is neither a limitation of the server/website i browse on, nor a configuration of the netbook: at home i have 500KB/s download speeds. Furthermore, it is not a default limitation for "untrusted" or "new machines" in the wifi, as for instance other new laptops get full speed internet with our wifi. Problem: Once the Samsung N220 is generating traffic in the wifi, the wifi is slowed down dramatically for all other machines: I run a ping to the router from the macbook. The ping times with the N220 ideling are 2-6ms. When I start downloading or browsing in the web with the N220 the ping speed drops to 800ms. Vice versa, when the macbook is generating the traffic the ping of the N220 to the rooter stays constant at around 2-6ms. So clearly, it is some problem originating from my netbook or maybe its treatment in the wifi. Thanks for any help

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• Getting SMB file shares working over a PPTP VPN

  - by Ben Scott

  I'm having issues getting SMB file shares working over a PPTP VPN. The server setup consists of a security device (DrayTek V3300) which passes the PPTP authentication to a SBS2003 server running RRAS. The server is the DC and provides DNS and WINS, the single NIC's name server is set to 127.0.0.1, and DHCP on the DrayTek sets the server IP as the DNS. If I create a new VPN connection in Win7, leaving everything as default apart from the server, username, password and domain, I can: ping everything by IP address resolve IPs with nslookup using their fully-qualified name, as in nslookup fileserver.mydomain.local ping machines by fully-qualified name, as in ping fileserver.mydomain.local However if I try to access a file share: within Explorer, I get "Windows cannot access ..." with "Error code: 0x80004005 Unspecified Error", using net use z: \\fileserver.mydomain.local\share, I get "System error 53 has occurred. The network path was not found." If I add the machine name to my HOSTS file I can use the file share, which is my last-ditch workaround, but I have a number of VPN users and would rather a solution that doesn't involve me trying to hand-edit system files on computers half a country away. If I set the WINS server explicitly in the connection's IPv4 settings I don't have to use the FQN to ping the machine, but that doesn't change anything else.

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• Why would one of my servers stop being able to access other servers by FQDN?

  - by Newlyn Erratt

  I have a number of servers on our local network and our debian server has suddenly stopped being able to access the other servers via their FQDN. Initial symptom was inability to login with Active Directory accounts. On further inspection, this machine, porkbelly, was unable to access our other servers (e.g. bacon and albert) via their FQDN. That is, they can ping albert by running ping albert but not by running ping albert.domain.local though when running ping albert it will be expanded to albert.domain.local. The server is still accessible from other servers via both porkbelly and porkbelly.domain.local. Upon examination of hosts information and running hostname its hostname and FQDN are correct. The resolv.conf appears correct. It contains: domain domain.local search domain.local nameserver 192.168.0.xxx (the nameserver) The dns server is also our Windows AD server. I'm not even sure where to go from here or why dns seems to be partially working though I don't have much experience. Where should I go from here? What might be causing this issue where machines are visible via their hostname but not their FQDN?

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• Windows 7 can't see wireless printer

  - by Chance Robertson

  I have a P1102W printer from HP. I have a Windows 7 machine. I have a MacBook Pro. I setup the printer following the instructions from the Windows 7 machine. I am able to print from the Mac but not the Windows 7 machine. And to add, I am not able to print from any Windows 7 machines. The MacBook Pro address is 198.168.2.115, the Windows machine is 192.168.2.117, and the printer in 192.168.2.140. I can ping the printer from the Mac. I can ping the Windows 7 machine from the mac. I can ping the mac from the windows 7 machine. When I try to ping the printer from the Windows 7 machine I get destination unreachable. I can browse to the printer IP address from the mac and not the Windows 7. I have turned off the firewall on the Windows 7 machine and turned on network sharing. Is there something else I am missing. I can connect the printer with a USB cable to the Windows machine and print. I can not get the Windows machine to see the printer even though they are on the same network.

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• Amazon EC2 Nat Instance - goes out but not back in

  - by nocode

  I've followed Amazon's steps and list what I've done. I've created 6 subnets (4 private SN1: 10.50.1.0/24, SN2: 10.50.2.0/24, SN3: 10.50.3.0/24, SN4: 10.50.4.0/24) and 2 public (SN5: 10.50.101.0/24 and SN6: 10.50.102.0/24) -I have a Bastion host and a NAT instance on SN5 and assigned EIP's to both. I created a test instance on SN1. edit: -NAT instance has source/destination check disabled -On the NAT instance, I had enabled the following commands to be bootstrapped: echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -A POSTROUTING -s 10.0.0.0/16 -j MASQUERADE -In my VPC, the private subnets have their own route table and configured 0.0.0.0/0 to the NAT instance with 4 subnets being associated with the route table. I have a second route table for my public subnets and 0.0.0.0/16 is pointed towards the IGW (with the other 2 subnets associated with it). -For Security Groups, I have the NAT instance accepting all traffic on each of the 4 subnets and all OUTBOUND traffic is allowed. For my test server, I have allowed all outbound access and have allowed all traffic from the public subnet of the NAT host. I can ping internally with no issues. On my test instance, if I try to ping google.com, DNS resolves however I don't get a reply back. On my NAT instance, I run a tcpdump and can see the request being requested to google.com but it's not sending the reply back. My NAT host can ping and receive a reply from google. From the test host, when I ping the NAT instance, the tcpdump shows a request and receive. Is there something I'm missing? EDIT: I've figured it out - I had to save the iptable config and restart the service.

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• My DNS works! But, what is the simplest way to add something to it?

  - by Alex

  This is my current DNS example.com.db zone file. I followed a tutorial. It works, because when I point to this DNS from another server via resolve.conf, it will actually forward me to the right IP when I do "ping example.com". ; ; BIND data file for example.com ; $TTL 604800 @ IN SOA example.com. info.example.com. ( 2007011501 ; Serial 7200 ; Refresh 120 ; Retry 2419200 ; Expire 604800) ; Default TTL ; @ IN NS ns1.example.com. @ IN NS ns2.example.com. example.com. IN MX 10 mail.example.com. example.com. IN A 192.168.254.1 www IN CNAME example.com. mail IN A 192.168.254.1 ftp IN CNAME example.com. example.com. IN TXT "v=spf1 ip4:192.168.254.1 a mx ~all" mail IN TXT "v=spf1 a -all" Right now, ping example.com....goes to 192.168.254.1. That's great!!! it works! My question is--how can I add something do this file so that when my other servers: ping dbserver1....goes to 44.245.66.222 ping cacheserver1 ....goes to 38.221.44.555 I want to use it like a universal hosts file for my machines.

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• Connect to Nonencrypted Wireless Network Using Ubuntu Commands

  - by Tim

  I failed to connect to an open i.e. nonencrypted wireless network using Ubuntu command lines. Here is what I did: $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo /sbin/ifconfig wlan0 up $ sudo iwconfig wlan0 essid "Cavalier High-Speed 866-4-CAVTEL" $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 10812 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPREQUEST of 192.168.1.67 on wlan0 to 255.255.255.255 port 67 DHCPREQUEST of 192.168.1.67 on wlan0 to 255.255.255.255 port 67 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 8 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 21 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6 No DHCPOFFERS received. Trying recorded lease 192.168.1.67 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. --- 192.168.1.1 ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms Trying recorded lease 192.168.1.45 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. --- 192.168.1.1 ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms No working leases in persistent database - sleeping. $ sudo /sbin/iwconfig wlan0 wlan0 IEEE 802.11bg Mode:Managed Frequency:2.422 GHz Access Point: Not-Associated Tx-Power=27 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Encryption key:off Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 I was wondering what the problem is and how I can do it right? Thanks and regards!

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• Any program to help me check whether an ethernet channel can support full-length VLAN packet?

  - by Jimm Chen

  Sometimes, I have to face such a situation that I need to quickly and explicitly know whether a full length VLAN packet can traverse between two RJ45 ports. Yes, I mean 802.1Q ethernet frame with Etype=81 00 (diagram below). What I can do now is: Get two Windows PCs, for each PC, intall Intel Gigabit NIC and Intel specific driver to create a virtual NIC, with VLAN ID=3 assigned. Then connect the two PCs to each of the two RJ45 port. Finally execute ping to generate a full-length ethernet packet. ping -f -l 1472 <dest-IP> This way, I can be sure that the sent packet has the maximum "IP data payload" of 1500 bytes(8 bytes of ICMP header and 1472 bytes of ICMP data). If the ping gets reply, I know that the ethernet channel support full-length VLAN packet. From my experiment, some home switch or broad band routers(e.g. Linksys WRT54G) does not support full-length VLAN packet switching, so only ping -f -l 1468 succeeds. You see, I have to use an expensive Intel NIC to carry on that test, quite inconvenient. You know, for most laptop today, they do not equip an Intel NIC, and, even it is an Intel NIC, Intel VLAN driver, Intel has limitations on the models on which VLAN driver can be installed. So, my question is: Is there a small program that can let me send a full-length VLAN packet without installing a dedicated VLAN driver? Or better, the program has a stock feature that does the very job for my situation. Windows programs preferred, Linux solution welcome. Simpler the program, the better. Thank you.

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• Unable to connect via NetBIOS Name

  - by grom

  I can't connect to machines/shares by NetBIOS names. Below is console output showing the problem. C:\>nbtstat -n Local Area Connection: Node IpAddress: [192.168.1.100] Scope Id: [] NetBIOS Local Name Table Name Type Status --------------------------------------------- BEAST <00> UNIQUE Registered WORKGROUP <00> GROUP Registered BEAST <20> UNIQUE Registered WORKGROUP <1E> GROUP Registered WORKGROUP <1D> UNIQUE Registered ..__MSBROWSE__.<01> GROUP Registered C:\>nbtstat -A 192.168.1.3 Local Area Connection: Node IpAddress: [192.168.1.100] Scope Id: [] NetBIOS Remote Machine Name Table Name Type Status --------------------------------------------- BRCLAPTOP <00> UNIQUE Registered WORKGROUP <00> GROUP Registered BRCLAPTOP <20> UNIQUE Registered WORKGROUP <1E> GROUP Registered MAC Address = 00-1C-BF-14-B8-6E C:\>ping beast Pinging beast [fe80::59b8:179f:b90b:a63f%11] with 32 bytes of data: Reply from fe80::59b8:179f:b90b:a63f%11: time<1ms Reply from fe80::59b8:179f:b90b:a63f%11: time<1ms Reply from fe80::59b8:179f:b90b:a63f%11: time<1ms Reply from fe80::59b8:179f:b90b:a63f%11: time<1ms Ping statistics for fe80::59b8:179f:b90b:a63f%11: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms C:\>ping brclaptop Ping request could not find host brclaptop. Please check the name and try again. C:\>nbtstat -a brclaptop Local Area Connection: Node IpAddress: [192.168.1.100] Scope Id: [] Host not found.

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• Unable to ssh to a Linux VM after a day

  - by jogabonito

  I have a machine running 4 VMs on it. There is one Fedora VM which is causing me some trouble. The IPs of the VMs are something like 10.100.100.* I have a Windows PC which is in the same network. It has an IP 10.100.25.77. When I reboot the Fedora VM, I am able to ping it from my Windows PC as well as use putty to ssh to it. The next day, I cant ping it or ssh from my Windows PC. However I can ping and ssh to the other VMs on the machine. If I ssh to one of the other VMs, I can ping and ssh to the Fedora VM. Next if I restart it, things get back to normal and I can access it without any issues. The IP of the VM doesn't change after rebooting and it is statically assigned I would like to know what is causing this and how to get it fixed. As a last resort, I am thinking of running a cron job to restart the VM every night, it is not a critical server, but will be generally used occasionally in the day time.

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• Redirecting or routing all traffic to OpenVPN on a Mac OS X client

  - by sdr56p

  I have configured an OpenVPN (2.2.1) server on an Ubuntu virtual machine in the Amazon elastic compute cloud. The server is up and running. I have installed OpenVPN (2.2.1) on a Mac OS X (10.8.2) client and I am using the openvpn2 binary to connect (in opposition to other clients like Tunnelblick or Viscosity). I can connect with the client and successfully ping or ssh the server through the tunnel. However, I can't redirect all internet traffic through the VPN even if I use the push "redirect-gateway def1 bypass-dhcp" option in the server.conf configurations. When I connect to the server with these configurations, I get a successful connection, but then an infinite series of error messages: "write UDPv4: No route to host (code=65)". Traffic routing seems to be compromised because I am not able to access anything anymore, not even the OpenVPN server (by pinging 10.8.0.1 for instance). This is beyond me. I am finding little help on the web and don't know what to try next. I don't think it is a problem of forwarding the traffic on the server since, first, I have also took care of that and, second, I can't even ping the VPN server locally through the tunnel (or ping anything at all for that matter). Thank you for your help. Here is the server.conf. file: port 1194 proto udp dev tun ca ca.crt cert ec2-server.crt key ec2-server.key # This file should be kept secret dh dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt push "redirect-gateway def1 bypass-dhcp" client-to-client keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log verb 3 And the client.conf file: client dev tun proto udp remote servername.com 1194 resolv-retry infinite nobind persist-key persist-tun ca ca.crt cert Toto5.crt key Toto5.key ns-cert-type server comp-lzo verb 3 Here is the connection log with the error messages: $ sudo openvpn2 --config client.conf Wed Mar 13 22:58:22 2013 OpenVPN 2.2.1 x86_64-apple-darwin12.2.0 [SSL] [LZO2] [eurephia] built on Mar 4 2013 Wed Mar 13 22:58:22 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Wed Mar 13 22:58:22 2013 LZO compression initialized Wed Mar 13 22:58:22 2013 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ] Wed Mar 13 22:58:22 2013 Socket Buffers: R=[196724->65536] S=[9216->65536] Wed Mar 13 22:58:22 2013 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ] Wed Mar 13 22:58:22 2013 Local Options hash (VER=V4): '41690919' Wed Mar 13 22:58:22 2013 Expected Remote Options hash (VER=V4): '530fdded' Wed Mar 13 22:58:22 2013 UDPv4 link local: [undef] Wed Mar 13 22:58:22 2013 UDPv4 link remote: 54.234.43.171:1194 Wed Mar 13 22:58:22 2013 TLS: Initial packet from 54.234.43.171:1194, sid=ffbaf343 d0c1a266 Wed Mar 13 22:58:22 2013 VERIFY OK: depth=1, /C=US/ST=CA/L=SanFrancisco/O=Fort-Funst ... ost.domain Wed Mar 13 22:58:22 2013 VERIFY OK: nsCertType=SERVER Wed Mar 13 22:58:22 2013 VERIFY OK: depth=0, /C=US/ST=CA/L=SanFrancisco/O=Fort-Funst ... ost.domain Wed Mar 13 22:58:23 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key Wed Mar 13 22:58:23 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Wed Mar 13 22:58:23 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key Wed Mar 13 22:58:23 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Wed Mar 13 22:58:23 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA Wed Mar 13 22:58:23 2013 [ec2-server] Peer Connection Initiated with 54.234.43.171:1194 Wed Mar 13 22:58:25 2013 SENT CONTROL [ec2-server]: 'PUSH_REQUEST' (status=1) Wed Mar 13 22:58:25 2013 PUSH: Received control message: 'PUSH_REPLY,route 10.8.0.0 255.255.255.0,topology net30,ping 10,ping-restart 120,ifconfig 10.8.0.6 10.8.0.5' Wed Mar 13 22:58:25 2013 OPTIONS IMPORT: timers and/or timeouts modified Wed Mar 13 22:58:25 2013 OPTIONS IMPORT: --ifconfig/up options modified Wed Mar 13 22:58:25 2013 OPTIONS IMPORT: route options modified Wed Mar 13 22:58:25 2013 ROUTE default_gateway=0.0.0.0 Wed Mar 13 22:58:25 2013 TUN/TAP device /dev/tun0 opened Wed Mar 13 22:58:25 2013 /sbin/ifconfig tun0 delete ifconfig: ioctl (SIOCDIFADDR): Can't assign requested address Wed Mar 13 22:58:25 2013 NOTE: Tried to delete pre-existing tun/tap instance -- No Problem if failure Wed Mar 13 22:58:25 2013 /sbin/ifconfig tun0 10.8.0.6 10.8.0.5 mtu 1500 netmask 255.255.255.255 up Wed Mar 13 22:58:25 2013 /sbin/route add -net 10.8.0.0 10.8.0.5 255.255.255.0 add net 10.8.0.0: gateway 10.8.0.5 Wed Mar 13 22:58:25 2013 Initialization Sequence Completed ^CWed Mar 13 22:58:30 2013 event_wait : Interrupted system call (code=4) Wed Mar 13 22:58:30 2013 TCP/UDP: Closing socket Wed Mar 13 22:58:30 2013 /sbin/route delete -net 10.8.0.0 10.8.0.5 255.255.255.0 delete net 10.8.0.0: gateway 10.8.0.5 Wed Mar 13 22:58:30 2013 Closing TUN/TAP interface Wed Mar 13 22:58:30 2013 SIGINT[hard,] received, process exiting toto5:ttntec2 Dominic$ sudo openvpn2 --config client.conf --remote ec2-54-234-43-171.compute-1.amazonaws.com Wed Mar 13 22:58:57 2013 OpenVPN 2.2.1 x86_64-apple-darwin12.2.0 [SSL] [LZO2] [eurephia] built on Mar 4 2013 Wed Mar 13 22:58:57 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Wed Mar 13 22:58:57 2013 LZO compression initialized Wed Mar 13 22:58:57 2013 Control Channel MTU parms [ L:1542 D:138 EF:38 EB:0 ET:0 EL:0 ] Wed Mar 13 22:58:57 2013 Socket Buffers: R=[196724->65536] S=[9216->65536] Wed Mar 13 22:58:57 2013 Data Channel MTU parms [ L:1542 D:1450 EF:42 EB:135 ET:0 EL:0 AF:3/1 ] Wed Mar 13 22:58:57 2013 Local Options hash (VER=V4): '41690919' Wed Mar 13 22:58:57 2013 Expected Remote Options hash (VER=V4): '530fdded' Wed Mar 13 22:58:57 2013 UDPv4 link local: [undef] Wed Mar 13 22:58:57 2013 UDPv4 link remote: 54.234.43.171:1194 Wed Mar 13 22:58:57 2013 TLS: Initial packet from 54.234.43.171:1194, sid=a0d75468 ec26de14 Wed Mar 13 22:58:58 2013 VERIFY OK: depth=1, /C=US/ST=CA/L=SanFrancisco/O=Fort-Funst ... ost.domain Wed Mar 13 22:58:58 2013 VERIFY OK: nsCertType=SERVER Wed Mar 13 22:58:58 2013 VERIFY OK: depth=0, /C=US/ST=CA/L=SanFrancisco/O=Fort-Funst ... ost.domain Wed Mar 13 22:58:58 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key Wed Mar 13 22:58:58 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Wed Mar 13 22:58:58 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key Wed Mar 13 22:58:58 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Wed Mar 13 22:58:58 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA Wed Mar 13 22:58:58 2013 [ec2-server] Peer Connection Initiated with 54.234.43.171:1194 Wed Mar 13 22:59:00 2013 SENT CONTROL [ec2-server]: 'PUSH_REQUEST' (status=1) Wed Mar 13 22:59:00 2013 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway def1 bypass-dhcp,route 10.8.0.0 255.255.255.0,topology net30,ping 10,ping-restart 120,ifconfig 10.8.0.6 10.8.0.5' Wed Mar 13 22:59:00 2013 OPTIONS IMPORT: timers and/or timeouts modified Wed Mar 13 22:59:00 2013 OPTIONS IMPORT: --ifconfig/up options modified Wed Mar 13 22:59:00 2013 OPTIONS IMPORT: route options modified Wed Mar 13 22:59:00 2013 ROUTE default_gateway=0.0.0.0 Wed Mar 13 22:59:00 2013 TUN/TAP device /dev/tun0 opened Wed Mar 13 22:59:00 2013 /sbin/ifconfig tun0 delete ifconfig: ioctl (SIOCDIFADDR): Can't assign requested address Wed Mar 13 22:59:00 2013 NOTE: Tried to delete pre-existing tun/tap instance -- No Problem if failure Wed Mar 13 22:59:00 2013 /sbin/ifconfig tun0 10.8.0.6 10.8.0.5 mtu 1500 netmask 255.255.255.255 up Wed Mar 13 22:59:00 2013 /sbin/route add -net 54.234.43.171 0.0.0.0 255.255.255.255 add net 54.234.43.171: gateway 0.0.0.0 Wed Mar 13 22:59:00 2013 /sbin/route add -net 0.0.0.0 10.8.0.5 128.0.0.0 add net 0.0.0.0: gateway 10.8.0.5 Wed Mar 13 22:59:00 2013 /sbin/route add -net 128.0.0.0 10.8.0.5 128.0.0.0 add net 128.0.0.0: gateway 10.8.0.5 Wed Mar 13 22:59:00 2013 /sbin/route add -net 10.8.0.0 10.8.0.5 255.255.255.0 add net 10.8.0.0: gateway 10.8.0.5 Wed Mar 13 22:59:00 2013 Initialization Sequence Completed Wed Mar 13 22:59:00 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:00 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:01 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:01 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:01 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:02 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:02 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:02 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:02 2013 write UDPv4: No route to host (code=65) Wed Mar 13 22:59:02 2013 write UDPv4: No route to host (code=65) ... The routing table after a connection WITHOUT the push redirect-gateway (all traffic is not redirected to the VPN and everything is working fine, I can ping or ssh the OpenVPN server and access all other Internet resources through my default gateway): Destination Gateway Flags Refs Use Netif Expire default user148-1.wireless UGSc 50 0 en1 10.8/24 10.8.0.5 UGSc 2 7 tun0 10.8.0.5 10.8.0.6 UH 3 2 tun0 127 localhost UCS 0 0 lo0 localhost localhost UH 6 6692 lo0 client.openvpn.net client.openvpn.net UH 3 18 lo0 142.1.148/22 link#5 UCS 2 0 en1 user148-1.wireless 0:90:b:27:10:71 UHLWIir 50 0 en1 76 user150-173.wirele localhost UHS 0 0 lo0 142.1.151.255 ff:ff:ff:ff:ff:ff UHLWbI 0 2 en1 169.254 link#5 UCS 1 0 en1 169.254.255.255 0:90:b:27:10:71 UHLSWi 0 0 en1 71 The routing table after a connection with the push redirect-gateway option enable as in the server.conf file above (all internet traffic should be redirected to the VPN tunnel, but nothing is working, I can't access any Internet ressources at all): Destination Gateway Flags Refs Use Netif Expire 0/1 10.8.0.5 UGSc 1 0 tun0 default user148-1.wireless UGSc 7 0 en1 10.8/24 10.8.0.5 UGSc 0 0 tun0 10.8.0.5 10.8.0.6 UHr 6 0 tun0 54.234.43.171/32 0.0.0.0 UGSc 1 0 en1 127 localhost UCS 0 0 lo0 localhost localhost UH 3 6698 lo0 client.openvpn.net client.openvpn.net UH 0 27 lo0 128.0/1 10.8.0.5 UGSc 2 0 tun0 142.1.148/22 link#5 UCS 1 0 en1 user148-1.wireless 0:90:b:27:10:71 UHLWIir 1 0 en1 833 user150-173.wirele localhost UHS 0 0 lo0 169.254 link#5 UCS 1 0 en1 169.254.255.255 0:90:b:27:10:71 UHLSW 0 0 en1

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• Local Network - Windows 7 and Vista can't see each other

  - by ca8msm

  I've got a strange issue at home that has been bugging me for weeks, but I really need to get it sorted now so I'll detail as much as I can and hopefully someone can spot what might might be wrong. I have a wireless router connected to the internet and 3 devices connected to it. They are: Name OS Network IPv4 PC1 Windows 7 WORKGROUP 192.168.2.2 LAPTOP1 Vista WORKGROUP 192.168.2.3 PS3 192.168.2.4 and they all get their IP addresses dynamically. Both PC1 and LAPTOP1 can ping PS3 and get a response. PC1 and LAPTOP1 are unable to ping each other by ip address unless I ping by their name (which bizarrely shows that it is pinging via the IPv6 address). Also, to confirm this both PC1 and LAPTOP1 can ping each other via the long IPv6 address that they both have so they can obviously see each other just not via IPv4. I've disabled the firewalls on both machines as well to rule that out. I don't really know what IPv6 is used for and I've tried disabling it on both machines but all that happens then is that neither machine can see each other at all then. Does anyone have any idea of what may be stopping them seeing each other, any ways I can look at fixing this, or any network tools that may help identify where it is failing? Thanks, Mark

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• What causes this sonar sound on OS X?

  - by Richard Metzler

  Both of my Macs play this sonar sound that sounds like "ping ping ping ping" with a small amount of delay / echo. It occurs to me that it is played once a day but I'm not sure why. I checked iCal but didn't found anything (I don't use iCal anyways but maybe it's connected to Google calendar or my iPhone). I've heard this sound played by both my MacBook and my iMac but not yet simultaneously. Update This sound is not submarine.aiff. It sounds much more like what skub linked to but there are 4 "pings" instead of 1. It is played at different times (today around 5pm and again at 8.45, but as far as remember not everyday). That's why I'm not sure I could record it, but I could try. The sound might come from my iPhone, though I'm not sure which apps are alowed to play sound when they are not running. Also I don't see any indication in the message center or something similar. I think I have to start taking notes on which apps running.

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• Can only ssh when not using wifi

  - by AChrapko

  So I have 3 machines, a windows 7 desktop that is always wired to my router, osX laptop, and raspberry pi running debian linux. My router is a Linksys e1000 wireless N. My goal is to be able to ssh the raspi from any machine, while it is connected via wifi. My problem is that when trying to ssh from either the win7 or osX to the Pi it either times out, or gives an error: "ssh: connect to host 192.168.1.### port 22: No route to host" The only times that I have managed to connect to the pi from any machine were when it connected to the router via an Ethernet cable. Currently with win7 desktop wired, macbook wireless, and pi wireless tests give the following: win7 ping macbook: Destination host unreachable. macbook ping win7: Request timeout. win7 ping pi: Destination host unreachable. macbook ping pi: Request timeout. blah blah blah Plugging the macbook into the router with an Ethernet cable all communication between win7 and macbook works. Pings, ssh, ftp, smb ect... No changes to the pi, still no connections possible to or from any of the other 2 machines. Note All machines, are able to connect to the internet and ssh to the same machine on a completely different network, wired or over wifi. Plugging the Pi in with Ethernet (and macbook still wired) I can ssh to the pi from both win7 and macbook. I can ssh from the pi to macbook. All machines still able to connect the the off network machine. Also another little side note- I was playing warcraft 3 with my roommates the other day, and the only time they were able to see my LAN game was when they were plugged into the router with an Ethernet cable. Once or twice one of the laptops was able to connect over wifi, but not without another computer connecting first via Ethernet. So basically does anyone have any info as to why my router seems to completely ignore local wireless traffic?

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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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• What is wrong with my home network? (Routing and connection issues)

  - by David

  I have a corporate laptop that was provided to me by a client and I'm having some rather odd difficulties with it when I put the laptop on my home network. When I first brought the machine home it behaved like any other laptop. Once it was connected to the network it was assigned an IP address and I could remote into it just fine using the machine name. Lately though, whenever I put this laptop on my network I am not able to ping or RDP into the machine as the host name doesn't properly resolve. Additionally I'm able to see the device and it's assigned IP address clearly in my router firmware. This gets even more strange as now when I try to ping it's IP address listed in my router, I see that it's actually trying to ping my own machine (screenshot of this very odd event below). This has actually driven me crazy to the point that I have actually replaced my router (it was behaving oddly in other ways), and I'm continuing to have these problems. The above ping capture is from the new router. As far as network goes I am now currently using an NetGear R7000 Nighthawk and I haven't customized any of the networking settings in the router just yet (installed yesterday). I would appreciate any advice possible and would be happy to provide further diagnostic information. Networking isn't my strong suit, so I'm not even sure where to begin unraveling this thing.

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• Mocking property sets

  - by mehfuzh

  In this post, i will be showing how you can mock property sets with your expected values or even action using JustMock. To begin, we have a sample interface: public interface IFoo {     int Value { get; set; } } Now,  we can create a mock that will throw on any call other than the one expected, generally its a strict mock and we can do it like: bool expected = false;  var foo = Mock.Create<IFoo>(BehaviorMode.Strict);  Mock.ArrangeSet(() => { foo.Value = 1; }).DoInstead(() => expected  = true);    foo.Value = 1;    Assert.True(expected); Here , the method for running though our expectation for set is Mock.ArrangeSet , where we can directly set our expectations or can even set matchers into it like: var foo = Mock.Create<IFoo>(BehaviorMode.Strict);   Mock.ArrangeSet(() => foo.Value = Arg.Matches<int>(x => x > 3));   foo.Value = 4; foo.Value = 5;   Assert.Throws<MockException>(() => foo.Value = 3);   In the example, any set for value not satisfying matcher expression will throw an MockException as this is a strict mock but what will be the case for loose mocks, where we also have to assert it. Here, let’s take an interface with an indexed property. Indexers are treated in the same way as properties, as with basic indexers let you access your class if it were an array. public interface IFooIndexed {     string this[int key] { get; set; } } We want to  setup a value for a particular index,  we then will pass that mock to some implementer where it will be actually called. Once done, we want to assert that if it has been invoked properly. var foo = Mock.Create<IFooIndexed>();   Mock.ArrangeSet(() => foo[0] = "ping");   foo[0] = "ping";   Mock.AssertSet(() => foo[0] = "ping"); In the above example, both the values are user defined, it might happen that we want to make it more dynamic, In this example, i set it up for set with any value and finally checked if it is set with the one i am looking for. var foo = Mock.Create<IFooIndexed>();   Mock.ArrangeSet(() => foo[0] = Arg.Any<string>());   foo[0] = "ping";   Mock.AssertSet(() => foo[0] = Arg.Matches<string>(x => string.Compare("ping", x) == 0)); This is more or less of mocking user sets , but we can further have it to throw exception or even do our own task for a particular set , like : Mock.ArrangeSet(() => foo.MyProperty = 10).Throws(new ArgumentException()); Or  bool expected = false;  var foo = Mock.Create<IFoo>(BehaviorMode.Strict);  Mock.ArrangeSet(() => { foo.Value = 1; }).DoInstead(() => expected  = true);    foo.Value = 1;    Assert.True(expected); Or call the original setter , in this example it will throw an NotImplementedExpectation var foo = Mock.Create<FooAbstract>(BehaviorMode.Strict); Mock.ArrangeSet(() => { foo.Value = 1; }).CallOriginal(); Assert.Throws<NotImplementedException>(() => { foo.Value = 1; });   Finally, try all these, find issues, post them to forum and make it work for you :-). Hope that helps,

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• SOLVED: network issue ubuntu 8.04 in vmware esx

  - by hoberion

  ok, this is really pissing me off I have one ubuntu 8.04 instance running on vmware (esx) which decided after a reboot to stop resolving dns requests, I also cant connect to it using ssh although I can ping the server and its really that server (when I shutdown the server the ping also stops) stuff I tried: - reboot again :) - nslookup - serverip - setting networking to dhcp - offering some cute kittens to lucifer - removing the virtual nic and adding another (to get a different mac) - migrating the instance to another esx host - drinking 20 cups of espresso - stopped all services - running dnsmasq on another server and connecting to that dns - tcpdumping - disabling ip6 symptoms: cant resolve anything nslookup just says "no servers found..." although I can ping the servers traceroute to gateway doesnt work (even with traceroute -4 -n gatewayip) collegues laughing at me any thoughts solved it: a collegue told me to upgrade/reinstall the vmware tools, I did and it solved my issue after rebooting

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• Software to Monitor the Stability of Internet Connection

  - by Ngu Soon Hui

  Thanks to the excellent internet connection service offered by one of the best ISP in the world, the internet connection in my area is very, very unstable. I can connect some of the time, but MOST of the time the connection will just drop off ( with the error message unable to resolve host) and after a few minutes, it will resume back. If I ping the domain name directly (i.e., ping www.google.com -t in cmd command), I will get a cannot ping message. Because of the flickery nature of the connection, it's pretty hard to prove to the support staff that internet connection is unstable. So I am thinking about using one software to record down the connection situation, so that I can present to the technical staff and make sure that they have no excuse not to fix my problem. Any such software available? Edit: Of course, such software should not record my browsing habit, and must be able to monitor and record the internet connection condition even when I am not online.

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• Unable to access VLAN host from VLAN interface in CentOS

  - by Amrit

  I am playing with VLAN (Virtual LAN) configuration on CentOS 6.4. I have 2 interfaces, eth0 and eth1. I have configured 2 VLAN interfaces eth0.20 and eth0.30 as #file: ifcfg-eth0.20 #------------- VLAN=yes DEVICE=eth0.20 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=static IPADDR=192.168.20.1 GATEWAY=192.168.20.1 NETMASK=255.255.255.0 USERCTL=no #file: ifcfg-eth0.30 #------------- VLAN=yes DEVICE=eth0.30 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=static IPADDR=192.168.30.1 GATEWAY=192.168.30.1 NETMASK=255.255.255.0 USERCTL=no Then connected a desktop to interface eth0 port using LAN cable and assigned 192.168.30.2/24 IP. When I try to ping 192.168.30.1 from 192.168.30.2 machine, It shows destination host unreachable. I am also not able to ping 192.168.130.2 from 192.168.30.1. However ping -I eth0 192.168.30.2 works fine. Any pointers?

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