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  • RRAS VPN Server on Windows 2008 Behind NAT

    - by Chris
    Ok, so I have kind of a funky setup, let me see if I can describe it. I have a single VMware host with a public IP address 74.xx.xx.x Inside that host, I have 3 VM's Web Server - 1 NIC - 192.168.199.20 SQL Server - 1 NIC - 192.168.199.30 RRAS/VPN Server - 2 NICs 192.168.199.40 & 192.168.199.45 Due to Limitations of my ISP, all of the VM's are connected to the host VIA NAT. I have NAT setup for the webserver so all incoming requests on 74.xx.xx.x via port 80 route to 192.168.199.20. This works fine. Now I want to set up a Windows 2008 VPN server inside this NAT network and forward the correct traffic to it. My questions are as follows? What are the TCP/UDP ports that i have to forward? What special configuration is needed on the server and clients since this is behind a NAT Any other advice would be wonderful.

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  • network is not available even when cisco vpn client is connected. wrong route?

    - by javapowered
    I'm using Vodafone 3G modem. I've disabled other network devices in the system (ethernet, wifi, wimax) turned off firewall and antivirus. cisco vpn client connects successfully but I still can not access computer 192.168.147.120 (as well as any other computer from network). Any suggestions are welcome as I don't know what to do. ipconfig /all and route print commands (translated to english): Microsoft Windows [Version 6.1.7601] (C) Microsoft Corporation (Microsoft Corp.), 2009. All rights reserved. C: \ Users \ Oleg> ipconfig / all IP Configuration for Windows The name of the computer. . . . . . . . . : OlegPC The primary DNS-suffix. . . . . . : Node Type. . . . . . . . . . . . . : Hybrid IP-routing is enabled. . . . : No WINS-proxy enabled. . . . . . . : No Ethernet adapter Local Area Connection 4: DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Cisco Systems VPN Adapter Physical Address. . . . . . . . . 00-05-9A-3C-78-00 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes Local IPv6-address channel. . . : Fe80:: c073: 41b2: 852f: eb87% 26 (Preferred) IPv4-address. . . . . . . . . . . . : 10.53.127.204 (Preferred) The subnet mask. . . . . . . . . . : 255.0.0.0 Default Gateway. . . . . . . . . : IAID DHCPv6. . . . . . . . . . . : 536872346 DUID the client DHCPv6. . . . . . . 00-01-00-01-14-6F-4C-8D-60-EB-69-85-10-2D DNS-servers. . . . . . . . . . . : Fec0: 0:0: ffff:: 1% 1 fec0: 0:0: ffff:: 2% 1 fec0: 0:0: ffff:: 3% 1 NetBios over TCP / IP. . . . . . . . : Disabled Adapter mobile broadband connection through a broadband adapter mobile communications: DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Vodafone Mobile Broadband Network Adapter (Huawei) Physical Address. . . . . . . . . 58-2C-80-13-92-63 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes IPv4-address. . . . . . . . . . . . : 10.229.227.77 (Preferred) The subnet mask. . . . . . . . . . : 255.255.255.252 Default Gateway. . . . . . . . . : 10.229.227.78 DNS-servers. . . . . . . . . . . : 163.121.128.134 212.103.160.18 NetBios over TCP / IP. . . . . . . . : Disabled Tunnel adapter isatap. {737FF02E-D473-4F91-840E-2A4DD293FC12}: State of the environment. . . . . . . . : DNS Suffix. DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Adapter Microsoft ISATAP # 3 Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes Tunnel adapter isatap. {EF585226-5B07-4446-A5A4-CB1B8E4B13AC}: State of the environment. . . . . . . . : DNS Suffix. DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Adapter Microsoft ISATAP # 4 Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes Tunnel adapter Teredo Tunneling Pseudo-Interface: DNS-suffix for this connection. . . . . : Description. . . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . 00-00-00-00-00-00-00-E0 DHCP is enabled. . . . . . . . . . . : No Autoconfiguration Enabled. . . . . . : Yes IPv6-address. . . . . . . . . . . . : 2001:0:4137:9 e76: ea: b77: f51a: 1cb2 (Basically d) Local IPv6-address channel. . . : Fe80:: ea: b77: f51a: 1cb2% 16 (Preferred) Default Gateway. . . . . . . . . ::: NetBios over TCP / IP. . . . . . . . : Disabled C: \ Users \ Oleg> route print ================================================== ========================= List of interfaces 26 ... 00 05 9a 3c 78 00 ...... Cisco Systems VPN Adapter 23 ... 58 2c 80 13 92 63 ...... Vodafone Mobile Broadband Network Adapter (Huawei) 1 ........................... Software Loopback Interface 1 19 ... 00 00 00 00 00 00 00 e0 Adapter Microsoft ISATAP # 3 20 ... 00 00 00 00 00 00 00 e0 Adapter Microsoft ISATAP # 4 16 ... 00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface ================================================== ========================= IPv4 Route Table ================================================== ========================= Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.229.227.78 10.229.227.77 296 10.0.0.0 255.0.0.0 On-link 10.53.127.204 286 10.6.93.21 255,255,255,255 10.0.0.1 10.53.127.204 100 10.13.50.12 255,255,255,255 10.0.0.1 10.53.127.204 100 10.53.8.0 255.255.252.0 10.0.0.1 10.53.127.204 100 10.53.127.204 255.255.255.255 On-link 10.53.127.204 286 10.53.128.0 255.255.248.0 10.0.0.1 10.53.127.204 100 10.53.148.0 255,255,255,240 10.0.0.1 10.53.127.204 100 10.53.148.16 255,255,255,240 10.0.0.1 10.53.127.204 100 10.229.227.76 255.255.255.252 On-link 10.229.227.77 296 10.229.227.77 255.255.255.255 On-link 10.229.227.77 296 10.229.227.79 255.255.255.255 On-link 10.229.227.77 296 10.255.255.255 255.255.255.255 On-link 10.53.127.204 286 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.147.0 255,255,255,240 10.0.0.1 10.53.127.204 100 192.168.147.96 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,112 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,128 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,144 255,255,255,240 10.0.0.1 10.53.127.204 100 192,168,147,224 255,255,255,240 10.0.0.1 10.53.127.204 100 192.168.214.0 255.255.255.0 10.0.0.1 10.53.127.204 100 192.168.215.0 255.255.255.0 10.0.0.1 10.53.127.204 100 194.247.133.19 255,255,255,255 10.0.0.1 10.53.127.204 100 213,247,231,194 255,255,255,255 10.229.227.78 10.229.227.77 100 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.229.227.77 296 224.0.0.0 240.0.0.0 On-link 10.53.127.204 286 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.229.227.77 296 255.255.255.255 255.255.255.255 On-link 10.53.127.204 286 ================================================== ========================= Persistent Routes: None IPv6 Route Table ================================================== ========================= Active Routes: If Metric Network Destination Gateway 16 58:: / 0 On-link 1306:: 1 / 128 On-link 16 58 2001:: / 32 On-link 16 306 2001: 0:4137:9 e76: ea: b77: f51a: 1cb2/128 On-link 16 306 fe80:: / 64 On-link 26 286 fe80:: / 64 On-link 16 306 fe80:: ea: b77: f51a: 1cb2/128 On-link 26 286 fe80:: c073: 41b2: 852f: eb87/128 On-link 1306 ff00:: / 8 On-link 16 306 ff00:: / 8 On-link 26 286 ff00:: / 8 On-link ================================================== ========================= Persistent Routes: None C: \ Users \ Oleg>

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  • Turn Windows Event Logs EVT files into Syslog to send to LogLogic

    - by TrevJen
    I have a a requirement to analyze 13gb of Windows logs by feeding it into a LogLogic Log aggregator. LogLogic is essentially Linux Syslog server, it can take a Syslog (Tcp/udp 514) feed or log on to a windows share and pull a flat file log. The only problem is that it cannot read the binary .EVT files from Windows Event logs. Normally, I would use Lasso to end the logs to a loglogic as syslog, but it has to read the logs from WMI and uses the DLLs on the log source host to format them and transmit them as syslog in the formatting that LogLogic expects. Does anyone know: A. Is there some kind of product out there to do this? or - B. Is there some way to import them into a Windows event veiwer in a way that lasso (or snare for that matter) will see them as actual real event logs on that host and forward them to the loglogic device as syslog.

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  • Networked Parallel Port in Linux / KVM / QEMU

    - by korkman
    What I want to use is the "-parallel" tcp or udp option from KVM / QEMU, but I don't seem to find any server for this client. I don't serve a printer but a hardware dongle. I checked ser2net, which does provide "/dev/lp0" sharing, but it doesn't seem to work for KVM / QEMU. I suspect KVM / QEMU requires "/dev/parport0". I did rmmod lp, modprobe ppdev, linked ser2net to parport0, but it didn't work out. Perhaps ser2net is not suited for this. I tried socat as well, and I tried netcat. No success. Does anyone know any KVM / QEMU compatible parallel port server? Or did any of netcat, socat or ser2net work for you?

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  • Mounting NFS share between OSX and Centos VM

    - by Adam
    I'm having issues mounting an NFS share I've made on my Mac host (server) from a Centos VM (client). I'm getting a permission denied error. I have this line in /etc/exports on server: /Users/adam/Sites/ 192.168.1.223(rw) and in /etc/fstab on client: 192.168.1.186:/Users/adam/Sites/ /home/adam/Sites/ nfs rw 0 0 I'm sure this is a simple configuration issue, but I've never set up NFS properly before. Extra info: # mount -v 192.168.1.186:/Users/adam/Sites/ /home/adam/Sites/ mount: no type was given - I'll assume nfs because of the colon mount.nfs: timeout set for Mon Nov 26 07:31:40 2012 mount.nfs: trying text-based options 'vers=4,addr=192.168.1.186,clientaddr=192.168.1.223' mount.nfs: mount(2): Protocol not supported mount.nfs: trying text-based options 'addr=192.168.1.186' mount.nfs: prog 100003, trying vers=3, prot=6 mount.nfs: trying 192.168.1.186 prog 100003 vers 3 prot TCP port 2049 mount.nfs: prog 100005, trying vers=3, prot=17 mount.nfs: trying 192.168.1.186 prog 100005 vers 3 prot UDP port 958 mount.nfs: mount(2): Permission denied mount.nfs: access denied by server while mounting 192.168.1.186:/Users/adam/Sites/

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  • Lots of TIME_WAIT connections in netstat (Windows Server 2008)

    - by Rhys Causey
    I'm having some issues on a Windows 2008 server with some network connections not going through. For instance, in a web application on the server, we need to open a socket connection to another server, and this fails sometimes with the following message: Only one usage of each socket address (protocol/network address/port) is normally permitted I looked up the error, which led me to this page: http://msdn.microsoft.com/en-us/library/aa560610(v=bts.20).aspx, which indicates that it might be TCP/IP port exhaustion. When I perform netstat -n, I get tons of TIME_WAIT connections on port 80. Does anyone have any idea what could be causing this?

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  • diagnostic multicast issue using wireshark

    - by Abruzzo Forte e Gentile
    I have a network that is setup for multicast traffic. My setup is the following -Machine A : a server generates multicast traffic. -Machine A : few clients subscribing to that multicast traffic -Machine B : few clients subscribing to that multicast traffic # Address I am using IP : 239.193.0.21 PORT: 20401 The clients in machine A , even if they join the group (I can see IGMP messages through wireshark), don't receive any data while (and this is the funny part) machine B,C and D receive everything. I sorted that issue by completely disabling Linux firewall. Before doing that, I enabled the multicast on the firwall ('reject all'). iptables -A INPUT -m addrtype --src-type MULTICAST -j ACCEPT My question is the following: what I can check in wireshark that can help me in spot such firewall issues in the futures? For TCP/IP I realize by using ping and looking at ICMP packets rejected. What I can check/monitor for multicast? I am using LInux/Red-Hat Enterprise 6.2

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  • Intermittent Connection Issues to SQL Server 2008 R2 RTM

    - by Chandan Jha
    The problem I am facing is a very complex one and inspite of trying to gather a root cause of the problem, I am standing at the same place after 2 months with just bits and pieces of information.Here is a scenario: There is a windows 2003 server which uses an system DSN ODBC connection. I looked into the driver properties and it is as follows: Name Version File SQL Server 2000.86.3959.00 SQLSRV32.DLL Now, this system DSN has been given configured with TCP\IP in Network Libraries and 'determine port dynamically' is checked. Now, lets come to the database destination. It is hosted on Windows 2008 having SQL 2008 R2 RTM version 64-bit. Now, I will give you a an overview about the events that happen and whatever troubleshooting I could perform: I get an email saying 'blah blah' failed and the only message their application gets is 'cannot connect to database' I go the SQL Server logs and find the following information: Login failed for user ''. Reason: An attempt to login using SQL authentication failed. Server is configured for Windows authentication only. [CLIENT: 10.0.0.xx Error: 18456, Severity: 14, State: 58.] A quick search shows that this error may come when an SQL Server is configured with windows authentication but its not true. We have mixed mode and connection issue is intermittent. This SQL Server is configured to run on a local system account but since we use only SQL Server accounts to connect to this, there should not be any Kerberos errors. When I run a profiler trace and see only 'existing connections', i see a lot of them coming from my client server displaying the sql user but NO hostname is shown. Textdata field shows TCP\IP information along with some arithabort and ansi-null settings. Now, I tried looking into ring connectivity buffer by using following: SELECTCAST(record AS XML) FROM sys.dm_os_ring_buffers WHERE ring_buffer_type = 'RING_BUFFER_CONNECTIVITY' One sample output is: <ConnectivityTraceRecord> <RecordType>Error</RecordType> <RecordSource>Tds</RecordSource> <Spid>118</Spid> <SniConnectionId>5124905D-D1EC-460E-AD78-201050B78C67</SniConnectionId> <OSError>0</OSError> <SniConsumerError>18452</SniConsumerError> <SniProvider>7</SniProvider> <State>1</State> <RemoteHost>10.0.0.21</RemoteHost> <RemotePort>5008</RemotePort> <LocalHost>10.1.0.38</LocalHost> <LocalPort>1433</LocalPort> <RecordTime>6/6/2012 21:14:57.527</RecordTime> <TdsBuffersInformation> <TdsInputBufferError>0</TdsInputBufferError> <TdsOutputBufferError>0</TdsOutputBufferError> <TdsInputBufferBytes>120</TdsInputBufferBytes> </TdsBuffersInformation> <TdsDisconnectFlags> <PhysicalConnectionIsKilled>0</PhysicalConnectionIsKilled> <DisconnectDueToReadError>0</DisconnectDueToReadError> <NetworkErrorFoundInInputStream>0</NetworkErrorFoundInInputStream> <ErrorFoundBeforeLogin>0</ErrorFoundBeforeLogin> <SessionIsKilled>0</SessionIsKilled> <NormalDisconnect>0</NormalDisconnect> </TdsDisconnectFlags> </ConnectivityTraceRecord> <Stack> <frame id="0">0X000000000174C34B</frame> <frame id="1">0X0000000001748FDD</frame> <frame id="2">0X0000000002461001</frame> <frame id="3">0X0000000000C47E98</frame> <frame id="4">0X00000000008015AD</frame> <frame id="5">0X0000000000801492</frame> <frame id="6">0X00000000003CBBD8</frame> <frame id="7">0X00000000003CB8BA</frame> <frame id="8">0X00000000003CB6FF</frame> <frame id="9">0X00000000008E8FB6</frame> <frame id="10">0X00000000008E9175</frame> <frame id="11">0X00000000008E9839</frame> <frame id="12">0X00000000008E9502</frame> <frame id="13">0X0000000074E437D7</frame> <frame id="14">0X0000000074E43894</frame> <frame id="15">0X00000000775A652D</frame> Somehow all the errors show error number 18452 whereas I never found this error in my SQL logs where I see only 18456. I am just stuck on a dead end because this connection issue appears intermittently. Sorry for a long question but I hope if you read this, you can make out that I tried a lot at my end before giving up.

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  • Unable to browse Server 2008R2 from XP clinets

    - by Dave M
    We have just deployed a Windows 2008R2 server in our Windows 2003 domain. XP clinets are unable to browse in "entire network" and find the new server. It can be accessed by entering \\servername and it can be pinged by name and IP address. Users access shares without issue. Netbios over TCP/IP is enabled. Computer browser is running on the Windows 2008R2 system. Turn on Network Discovery is enabled. These services were started as a result of an MS article Computer Browser DNS Client Function Discovery Resource Publication SSDP Discovery UPnP Device Hosts

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  • HAProxy -- pause/queue all traffic without losing requests

    - by Marc
    I basically have the same problem as mentioned in this thread -- I would like to temporarily suspend all requests to all servers of a certain backend, so that I can upgrade the backend and the database it uses. Since this is a live system, I would like to queue up requests, and send them to the backend servers once they've been upgraded. Since I'm doing a database upgrade with the code change, I have to upgrade all backend servers simultaneously, so I can't just bring one down at a time. I tried using the tcp-request options combined with removing the static healthcheck file as mentioned in that thread, but had no luck. Setting the default "maxconn" value to 0 seems to pause and queue connections as desired, but then there seems to be no way to increase the value back to a positive number without restarting HAProxy, which kills all requests that had been queued up until that point. (The "hot-reconfiguration" options using -sf and -st start a new process, which doesn't seem to do what I want). Is what I'm trying to do possible?

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  • Poor upload/download speed on 2 x ADSL lines into a Cisco 2621XM

    - by 2020mobile
    Hi, Sorry never been on this site before so I apologise if not the right section or even forum. I have users complaining of very slow internetn connectivity on site and have checked with our ISP who have said that the line is testing at 8mb. We have 2 x BT lines that have our ISP broadand on them. Both lines go into a Cisco 2600 series router that then has a PIX firewall off that. Connectivity is successful just gone really slow and unable to download anything. Config is below: version 12.3 no service pad service tcp-keepalives-in service tcp-keepalives-out service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname ROUTER-ADSL-INTERNET ! logging buffered 16384 informational enable secret xxx enable password xxx ! username xxx username xxx clock summer-time UK recurring last Sun Mar 1:00 last Sun Oct 1:00 aaa new-model ! ! aaa authentication login default local aaa authorization exec default local aaa session-id common ip subnet-zero no ip source-route ! ! ! ip audit notify log ip audit po max-events 100 no ip bootp server ip name-server 213.208.106.212 no mpls ldp logging neighbor-changes no ftp-server write-enable ! ! ! ! ! ! ! ! ! ! no voice hpi capture buffer no voice hpi capture destination ! ! ! ! ! ! ! ! interface ATM0/0 description 01270 111111 no ip address no atm ilmi-keepalive pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1 ! dsl operating-mode auto ! interface FastEthernet0/0 ip address 82.133.32.9 255.255.255.248 shutdown speed 100 full-duplex no cdp enable ! interface ATM0/1 description 01270 222222 no ip address no atm ilmi-keepalive pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1 ! dsl operating-mode auto ! interface FastEthernet0/1 ip address 217.146.115.49 255.255.255.240 duplex auto speed auto no cdp enable ! interface Dialer0 ip address 217.146.115.250 255.255.255.248 encapsulation ppp dialer pool 1 dialer-group 1 ppp authentication chap callin ppp chap hostname [email protected] ppp chap password 7 xxxxx ppp multilink ! ip classless ip route 0.0.0.0 0.0.0.0 Dialer0 ! no ip http server no ip http secure-server ! no logging trap access-list 10 permit 217.146.115.50 access-list 10 permit 82.133.32.10 access-list 10 deny any access-list 22 permit 217.146.115.50 access-list 22 permit 217.206.239.86 access-list 22 permit 82.133.32.10 access-list 22 deny any dialer-list 1 protocol ip permit no cdp run ! ! snmp-server community xxxxxx RO 10 snmp-server enable traps tty radius-server authorization permit missing Service-Type ! ! ! ! ! ! line con 0 exec-timeout 5 0 password 7 xxxxxx line aux 0 no exec line vty 0 4 access-class 22 in exec-timeout 5 0 password 7 xxxxxx transport input telnet ssh transport output none line vty 5 15 password 7 xxxxxx transport input telnet ssh ! ntp clock-period 17180095 ntp server 130.88.200.98 ! ! end Now my knowledge is very limited but ISP have said that while the lines are bonded each needs a seperate login as they've recently changed their L2TP router and that enforces the use of seperate logins - when the lines were configured we were given two logins. So, my question is what changes do I need to make to the config in order to get this working? it was ok before their change and I do have another login :- 01270 111111 - [email protected] 01270 222222 - [email protected] Apologies for the long email and thanks for taking the time to read it. Any more info I can provide please let me know. Thanks,

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  • Linux networking "jail" for a single process

    - by halp
    I need to tune up a networking app for network specific things like: make it use a DNS server different than the default one from /etc/resolv.conf make sure it does not try to connect to certain hosts/ports using tcp/udp connections I know I can get away with just modifying /etc/resolv.conf and writing some iptables rules, but going for a default DENY firewall policy for outgoing IP packets can trigger malfunctions in other services running on the server. I know I can set up a virtual machine with a whole OS and run my app there, but it seems a bit overkill. Is it possible to have a networking "jail" for a single app (think single Linux process) that could accept iptables-like rules for network traffic (think in terms of IP packets and above) allowed to and from this particular app? Maybe this is achievable through some dynamically loaded library that can deal with the networking layer, the same manner tsocks does, but more fine-grained?

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  • Error "fileid changed" when accessing files over NFS

    - by Roman Prikhodchenko
    I have an nfs-kernel-server configured and running on Ubuntu 10.04 Server. /export THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) /export/ebs THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,nohide,insecure,no_subtree_check,async) I mounted the exported folder to the second server: mount -t nfs4 -o proto=tcp,port=2049 NFS_SERVER_IP_HERE:/ebs /ebs and it works just fine. I mounted it to the third server but I cannot access files from it. ls -l /ebs ls: reading directory /ebs: Stale NFS file handle total 0 The syslog on the third server says: kernel: [11575.483720] NFS: server NFS_SERVER_IP_HERE error: fileid changed kernel: [11575.483722] fsid 0:14: expected fileid 0x2, got 0x6e001 Some info: uname -r 2.6.32-312-ec2 uname -m i686

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  • Accessing apache in ubuntu 10 virtualbox guest from ubuntu 10 host

    - by Francis L
    I did the following: installed VirtualBox 3.1.6 OSE in ubuntu 10 desktop. installed ubuntu 10 server on a virtual machine in VirtualBox. select "LAMP server" and "OpenSSH server" options during the ubuntu server installation. leave network "adapter 1" of virtual machine as "NAT". use "VBoxManage" described in manual to setup port forwarding on the host (Protocol: TCP, GuestPort: 80, HostPort: 8080). verify "ExtraDataItem" have been added to "ubuntuServer1.xml" (my virtual machine name) correctly. run command "pgrep apache" in ubuntu server in virtual machine to ensure apache is running. Everything went well. But, when I try to access the apache from the browser on the host with "http://localhost:8080/", it just continue fetching with no response. Now, I'm struck! Please help! Many many thanks in advance!

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  • OpenVPN performance: how many concurrent clients are possible?

    - by Steffen Müller
    I am evaluating a system for a client where many OpenVPN clients connect to a OpenVPN server. "Many" means 50000 - 1000000. Why do I do that? The clients are distributed embedded systems, each sitting behind the system owners dsl router. The server needs to be able to send commands to the clients. My first naive approach is to make the clients connect to the server via an openvpn network. This way, the secure communication tunnel can be used in both directions. This means that all clients are always connected to the server. There are many clients summing up over the years. The question is: does the OpenVPN server explode when reaching a certain number of clients? I am already aware of a maximum TCP connection number limit, therefore (and for other reasons) the VPN would have to use UDP transport. OpenVPN gurus, what is your opinion?

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  • Intermittent login issues to SQL Server

    - by Etienne
    My website is an ASP.NET 2.0 website connecting to a SQL Express Database. Every now and then I get the following error message when I load my site. Login Failed for Username 'MyUsername'. Then on another time I get the following error message. A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The specified network name is no longer available.) After pressing F5 a few times it will go away. It is very intermittent and it drives me nuts as the company hosting my website cant figure out why this is happening. Then it works then it does not, then it does then it does not! Any idea???

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  • Print server not being recognized after switching router and upgrading to 64 bit

    - by picardo
    I recently upgraded Windows 7 from 32 bit to 64 bit. I also switched my router from a very old model of Netgear to TP-Link. Before these updates, I had been using a USB print server by IOGear. After the updates, I took care to reinstall the drivers for both the print server and the printer, and picked the option to install a printer via TCP/IP, but no matter what I did, the driver software couldn't locate the print server on my network. I hit refresh, restarted my machine, turned off the firewalls and tried again. Still nothing. I'm at my wit's end. What else is left to try? Edit: More info. The print server is connected to the router via LAN line. The computer is connected to the router with a wireless connection.

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  • AT&T U-verse 2Wire Router - Increase session table limit?

    - by caleban
    AT&T U-verse VDSL "fiber to the node" 24Mbit down / 3Mbit up 2Wire Router Model 3800HGV-B Software Version 6.1.9.24-enh.tm The 2Wire router appears to have a limit of 1024 TCP and UDP sessions. This limit appears to apply to all sessions regardless of any static IP, firewall off, DMZ plus, secondary router configurations. I've tried using the 2Wire router alone and also configuring the 2Wire static IP addressing, firewall off, DMZ plus, etc. setup along with my own pfSense router/firewall. Either way it appears I exceed the 1024 session limit and sessions start being reset. Running out of sessions isn't being caused by torrents or p2p etc. We're a business and our legitimate uses are exceeding this session limit. AT&T tells me it's not possible to bridge the router or increase or avoid the session table limit. I'm curious if anyone has found a way around either of these issues.

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  • How to monitor current output/receive queue length in Linux

    - by IZhen
    I want to check the capacity and performance of my network. Besides checking the txkB/s and rxkB/s via Sar, I'd also like to see the average queue length of the network interface(so that the average queueing time in the interface can be calculated). It seems that netstat can give a per socket queue length, is it possible to get a per interface statics(a bit like Network Interface\Output Queue Length in Windows)? A related and kind of reverse questions is How do I view the TCP Send and Receive Queue sizes on Windows? Thanks

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  • Auto Start of Proftpd on OpenSuse Linux

    - by a_ak
    I´m trying to activate the Ftpservice on my Root Server, i have OpenSuse installed, and I´m using the xinetd method .. i added this to my xineted.conf: service ftp { flags = REUSE socket_type = stream protocol = tcp wait = no user = root server = /usr/sbin/in.proftpd disable = no } I´m not sure about this "server = /usr/sbin/in.proftpd" .. i added the code directly in the xinetd.config and not in a seperate file.. and to my proftpd.conf as the documentation of profdtp ( was already setted) : ServerType inetd Then I restarted the xineted service .. and no errors to see, but the proftpd ist still not statrting/launching .. I searched alot on google, but everywhere they say to do what i did abouve, nothing more.. did i miss something ?

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  • Need help diagnosting a random BSOD

    - by diimdeep
    I have random BSOD even in idle .. Already tried: memtest - ok scandisk- ok netsh int ip reset Winsock fix. tcpip.sys+2c13e 21.06.2011 15:21:00 DRIVER_IRQL_NOT_LESS_OR_EQUAL tcpip.sys+2de08 22.06.2011 15:09:28 DRIVER_IRQL_NOT_LESS_OR_EQUAL tcpip.sys+2de08 22.06.2011 16:09:31 DRIVER_IRQL_NOT_LESS_OR_EQUAL tcpip.sys+2c13e 23.06.2011 9:48:16 DRIVER_IRQL_NOT_LESS_OR_EQUAL Fastfat.SYS+4dc 21.06.2011 11:55:10 SYSTEM_THREAD_EXCEPTION_NOT_HANDLED ipnat.sys ipnat.sys+6751 ntoskrnl.exe ntoskrnl.exe+699e0 tcpip.sys tcpip.sys+2c13e 0 HTTP.sys HTTP.sys+15d00 ipnat.sys ipnat.sys+6751 tcpip.sys tcpip.sys+2de08 ipnat.sys ipnat.sys+6751 ntoskrnl.exe ntoskrnl.exe+79d94 tcpip.sys tcpip.sys+2c13e Fastfat.SYS Fastfat.SYS+4dc ntkrnlpa.exe ntkrnlpa.exe+8d820 Here is .dmp files and report generated by BlueScreenView https://skydrive.live.com/redir.aspx?cid=7e5eafae5336f402&resid=7E5EAFAE5336F402!116 Please help !! I know this questions but answers in it not help Only browser causes BSOD -- all other TCP operations okay

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  • Unable to connect to local SQL Express (2008)

    - by Will
    I'm trying to get an installation of SQL Express 2008 working, but no matter what I do I can't connect to it with management studio. I've enabled TCP/IP for the instance. I've tried connecting with machinename\instance, .\instance, (local), etc etc etc. Nothing works, and I always get the same message. If I browse for a server, the only server listed is the local integration services, which I can connect to just fine. The SQL server service is running (SQLEXPRESS), SQL Server Agent is not (and won't, can't enable it), and SQL Server Browser is. Anyone have any suggestions on where to go next? I've tried uninstalling EVERYTHING sql and reinstalling, no change.

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  • SharePoint 2010 Server Configuration Error -> "Cannot connect to database master"

    - by Chrish Riis
    I recieve the following error when I try to configure SharePoint 2010 Server: "Cannot connect to the database master at SQL server at [computer.domain]. The database might not exist, or the current user does not have permission to connect to it." I run the following setup: Windows Server 2008 R2 Standard with SP1 and all the updates SQL Server 2008 R2 with SP1 SharePoint Server 2010 with SP1 Everything is installed on the same server (it's a testserver) I have tried the following: Rebooting the server Checking the install account's DB rights (dbcreator, securityadmin - I even let it have sysadmin) Opened up the firewall on port 1433 and 1434 Uninstalled both SQL and SP, then reinstalled the both Enabled all client protocols in SQL Server Configuration Made sure I used the correct account for installing SharePoint (local admin) Useful links: TCP/IP settings – http:// blog.vanmeeuwen-online.nl/2010/10/cannot-connect-to-database-master-at.html http:// ybbest.wordpress.com/2011/04/22/cannot-connect-to-database-master-at-sql-server-at-sql2008r2/ Wrong slash - http:// yakimadev.com/2010/11/cannot-connect-to-database-master-at-sql-server-at-serverdbname-error-during-sharepoint-2010-products-configuration-wizard-and-installation/ Port error - http:// www.knowsharepoint.com/2011/08/error-connecting-to-database-server.html

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  • Multiple home routers

    - by netvope
    Suppose I have the following configuration: Router A: WAN port connected to the Internet, LAN = 192.168.1.0/24 Computer A: Connected to router A as 192.168.1.101 Router B: WAN port connected to router A as 192.168.1.102, LAN = 192.168.2.0/24 Computer B: Connected to router B as 192.168.2.101 Now I want computer A to communicate with computer B seamlessly (e.g. can establish a TCP connection by running nc 192.168.2.101 <port>) by means of routing, rather than merging the two networks into one (which can be easily accomplished using router B as a switch). Most routers are shipped with NAT turned on, of which I definitely need to turn off in router B. But what other steps do I need to take so that packets from computer A to computer B would go through router B? I could manually add a routing table entry in computer A so that all packets targeted to 192.168.2.0/24 go through gateway 192.168.1.102, but I would prefer an automatic way if it exist.

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  • Multiple home routers

    - by netvope
    Suppose I have the following configuration: Router A: WAN port connected to the Internet, LAN = 192.168.1.0/24 Computer A: Connected to router A as 192.168.1.101 Router B: WAN port connected to router A as 192.168.1.102, LAN = 192.168.2.0/24 Computer B: Connected to router B as 192.168.2.101 Now I want computer A to communicate with computer B seamlessly (e.g. can establish a TCP connection by running nc 192.168.2.101 <port>) by means of routing, rather than merging the two networks into one (which can be easily accomplished using router B as a switch). Most routers are shipped with NAT turned on, of which I definitely need to turn off in router B. But what other steps do I need to take so that packets from computer A to computer B would go through router B? I could manually add a routing table entry in computer A so that all packets targeted to 192.168.2.0/24 go through gateway 192.168.1.102, but I would prefer an automatic way if it exist.

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