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  • DFS keeps constantly replicating almost all files

    - by Adrian Godong
    We have always had problems with DFS, but recently it has gotten worse (with no apparent reason) to the point it's becoming harmful. We have one master server and DFS connections to other four servers. The four severs don't modify any files, so all replications always propagate from the master to the four other servers. The replicated directory has about 900,000 files. In the recent weeks, every time we check DFS, the DSF backlogs have hundredths of thousand of files. For instance now, the master server now replicates about 700,000 to three of the four servers while the fourth one is fine. Sometimes, only one is off, sometimes two and this time three. Also, it is never the same set of servers. It is inconceivable that something periodically touches all 900,000 files. The biggest change which happens is a scheduled update of several thousand files every six hours. Does anybody have the same problem? Is it a known issue?

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  • Linux Mint Wireless doesn't connect [migrated]

    - by guisantogui
    I'm having a great problem, I've installed Linux mint debian edition (LMDE), and following this tutorial http://community.linuxmint.com/tutorial/view/161 I did installed the network driver. The available connections appears to me, but when i try to connect to my connection at first time, I got this message: "(4) Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken." And the following tries, I got this another message: "(32) Insufficient privileges." I'm accepting ideas. Thanks.

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  • Removing port forwardings programmatically on a ControlMaster SSH session

    - by aef
    Quite a while ago I got an answer telling me how to add a port-forwarding on a running SSH ControlMaster process. To know that helps a lot, but I'm still missing a way to remove such a port forwarding after I don't need that anymore. As far as I know, you can do that through the internal command key sequence on normal connections, this seems to be disabled for ControlMaster clients. Even if that would be possible I would need a solution which I can automatize with scripts, which is surely not so easy this way. Is there a way to do it? And is it easily automatizable?

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  • Configuring Fortigate OS4 for FTPS

    - by Paul
    I configured iis7 ftp to allow ssl connections. I set the ssl firewall to use ports 50000-50050. If I set up a custom service on my fortigate firewall for ftps with source ports 990-50050 and destination ports 990-50050, set it to a firewall policy and connect from a client it connects and works successfully. If I create a service FTPS Control with source port 990 and destination port 990 and another service,FTP Data with source ports 50000-50050 and destination ports 50000-50050 add them to a group FTPSSL, replace the ftps policy with FTPSSL and try connecting it tries to connect to port 990 and eventually times out. Is there a way to configure the service to only use the ports I need and not every port from 990 up?

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  • Lots of 408 Request Timed Out from same IPs

    - by GreatFire
    Web server: Nginx. Checking our log files, there are many log entries of connections that: take 59-61 seconds send an empty request (or at least none is logged) result in a 408 response (request timed out) do not contain any http_user_agent originate from a limited number of IPs We are monitoring average times to serve responses and this obviously inflates our statistics. Apart from that though, is this a problem? Any idea why it is occurring? Does it suggest that somebody is intentionally messing with us? What should we do?

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  • Dial PPPoE connection on Windows startup

    - by alex
    Is there a way to automatically dial a PPPoE connection on startup? In Mac OS X, this is done automatically after login. It was also possible in Windows XP: when creating a new connection, it also created a shortcut to it on the desktop. Adding it to the startup folder and setting it to not prompt for credentials solved the problem. But in Vista and Windows 7, there are no shortcuts to the newly created connections, so I can't do the same thing here. Is there any other way to do this?

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  • iDrac6 Email Alert Problem

    - by theotherreceive
    I'm trying to setup the email alerts on the iDrac6 Express on an R610, but when i run the test it just says "Sending Failed". Platform Event Filter Alerts are enabled. The network setup is: 192.168.1.22/255.255.255.0 Gateway: 192.168.1.1 DNS: 192.168.1.1 SMTP: 192.168.1.1 Exim is listening 192.168.1.1 and is set to allow mail on 192.168/16. There's nothing in the exim logs about connections from the drac. Is there a way to get the drac to give more information about why it's sending failed?

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  • Stunnel delaying boot

    - by Onitlikesonic
    My stunnel implementation works fine when the network is plugged in but it takes an awful amount of time, which delays the whole boot process, when there is no network connected to the machine. As extra information: I'm using "delay=yes" I'm using an fqdn (e.g: stunnel.mydomain.com) for the connections Using ubuntu but this also happened with centos5 previously How can this be avoided or a timeout specified? edit: doing an strace as suggested by symcbean shows the following (including the last part where it hangs): [...] --- SIGCHLD (Child exited) @ 0 (0) --- rt_sigreturn(0x11) = 0 close(3) = 0 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6039 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7ff9ce0c79d0) = 6046 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6046 --- SIGCHLD (Child exited) @ 0 (0) --- rt_sigreturn(0x11) = 6046 write(1, "[Started: /etc/stunnel/stunnel.c"..., 37) = 37 write(1, "stunnel.\n", 9) = 9 exit_group(0) = ? [...] stunnel hangs in this line: wait4(-1, and when i plug in the network cable it continues to show [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6046

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  • allow SSH to bypass VPN on OSX mavericks, openvpn, pf

    - by zycho42
    My home computer connects to the internet through an OpenVPN connection. However, I would like to be able to connect to my home computer from outside over ssh. Ssh is set up and working, but when I connect to the vpn ssh is only accessible from inside my home network. I figure what's going wrong is my router forwards incoming ssh connections to my mac, but then my mac replies over the vpn, so the connection from outside times out. I've got pf set up for a couple of other things, but I can't figure out how to let the ssh replies bypass the vpn using pf. I've come across other solutions that use ip tables, routing tables and rules, but I can't figure out how to set that up on mavericks. I've been searching for this for a while now but I haven't found a working solution. Any help would be greatly appreciated!

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  • How do I deny all requests not from cloudflare?

    - by phillips1012
    I've recently gotten denial of service attacks from multiple proxy ips, so I installed cloudflare to prevent this. Then I started noticing that they're bypassing cloudflare by connecting directly to the server's ip address and forging the host header. What is the most performant way to return 403 on connections that aren't from the 18 ip addresses used by cloudflare? I tried denying all then explicitly allowing the cloudflare ips but this doesn't work since I've set it up so that CF-Connecting-IP sets the ip allow tests for. I'm using nginx 1.6.0.

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  • Need a Company to Fix My Plesk & IIS on windows 2008 [SOLVED]

    - by DevCompany
    Hello: I need to know a name of a company to fix my server install and get my sites running again. Windows 2008 IIS 7 Plesk 9.x The problem started when Level 2 of my hosting company adjusted a FTP users to have certain permissions....apparently he did this outside of plesk and it has been nothing but permission headaches all around. Connections....uploading files, etc. now somethings gone wrong where plesk isnt even loading properly and IIS too... I need to see if someone can fix this remotely before I give the green light to format and reinstall server, IIS, Plesk and Domains! looking to pay a company to get this working ASAP - This is not requested as a free job so I need someone good and who can fix it without the huge hassle of formatting and such. Need to resolve today Post expires on Monday 04-26-20010

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  • "Couldn't resolve host" for any external content

    - by scatteredbomb
    On our site we run a few different scripts for various sites (uploading to amazon s3, data from chartbeat, script to count twitter followers) and all of them just stop working from time to time. They work most days, but then some days (like today) they all just stop working. This simple script to get follower count into PHP $url = "http://twitter.com/users/show/username"; $response = file_get_contents ( $url ); $t_profile = new SimpleXMLElement ( $response ); $count = $t_profile->followers_count; Just sits there for a couple minutes, then finally spits out an error that says "Couldn't resolve host". Any script we use for an external site gives us this error. I'm not really sure where to check what's blocking these connections all of a sudden, and why it seems to work most times, then doesn't for a day or so, then works again. Any tips? Update: Contents of resolv.conf search 147.225.210.rdns.ubiquityservers.com nameserver 72.37.224.5 nameserver 72.37.224.6

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  • Citrix Secure Gateway not redirecting to login URL

    - by Dave
    We have an older setup for XenApp - users log in through Citrix Secure Gateway running on a windows box. (We hope to start using a NetScaler soon.) Earlier today, connections to https://citrix.company.com/ starting throwing up a 503 error page, instead of redirecting to https://citrix.company.com/Citrix/XenApp/ If you go directly to the /Citrix/Xenapp/ URL, the user is properly directed to the login page, and can launch apps. We've restarted the service, and rebooted the server. We haven't yet tried uninstalling and reinstalling the software. Before we do this, I'm looking for ideas as to how we can get the redirect working again without a fairly major outage window. To make things more interesting, many of our users have Citrix Receiver installed, also pointed at https://citrix.company.com/. Receiver makes itself the default launcher for ICA files, and gives a connection error when it tries to load apps - probably because of the same non-functional rediect?

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  • Optimizing MySQL for small VPS

    - by Chris M
    I'm trying to optimize my MySQL config for a verrry small VPS. The VPS is also running NGINX/PHP-FPM and Magento; all with a limit of 250MB of RAM. This is an output of MySQL Tuner... -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.41-3ubuntu12.8 [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 1M (Tables: 14) [--] Data in InnoDB tables: 29M (Tables: 301) [--] Data in MEMORY tables: 1M (Tables: 17) [!!] Total fragmented tables: 301 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 2d 11h 14m 58s (1M q [8.038 qps], 33K conn, TX: 2B, RX: 618M) [--] Reads / Writes: 83% / 17% [--] Total buffers: 122.0M global + 8.6M per thread (100 max threads) [!!] Maximum possible memory usage: 978.2M (404% of installed RAM) [OK] Slow queries: 0% (37/1M) [OK] Highest usage of available connections: 6% (6/100) [OK] Key buffer size / total MyISAM indexes: 32.0M/282.0K [OK] Key buffer hit rate: 99.7% (358K cached / 1K reads) [OK] Query cache efficiency: 83.4% (1M cached / 1M selects) [!!] Query cache prunes per day: 48301 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 144K sorts) [OK] Temporary tables created on disk: 13% (27K on disk / 203K total) [OK] Thread cache hit rate: 99% (6 created / 33K connections) [!!] Table cache hit rate: 0% (32 open / 51K opened) [OK] Open file limit used: 1% (20/1K) [OK] Table locks acquired immediately: 99% (1M immediate / 1M locks) [!!] InnoDB data size / buffer pool: 29.2M/8.0M -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Reduce your overall MySQL memory footprint for system stability Enable the slow query log to troubleshoot bad queries Increase table_cache gradually to avoid file descriptor limits Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 64M) table_cache (> 32) innodb_buffer_pool_size (>= 29M) and this is the config. # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 32M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 sort_buffer_size = 4M read_buffer_size = 4M myisam_sort_buffer_size = 16M # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 100 table_cache = 32 tmp_table_size = 128M #thread_concurrency = 10 # # * Query Cache Configuration # #query_cache_limit = 1M query_cache_type = 1 query_cache_size = 64M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 log_error = /var/log/mysql/error.log # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ The site contains 1 wordpress site,so lots of MYISAM but mostly static content as its not changing all that often (A wordpress cache plugin deals with this). And the Magento Site which consists of a lot of InnoDB tables, some MyISAM and some INMEMORY. The "read" side seems to be running pretty well with a mass of optimizations I've used on Magento, the NGINX setup and PHP-FPM + XCACHE. I'd love to have a kick in the right direction with the MySQL config so I'm not blindly altering it based on the MySQLTuner without understanding what I'm changing. Thanks

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  • Windows Server 2008 - unable to bind any TCP port

    - by Kalphiter
    OS: Win Server 2008 RC2 Windows firewall on (no effect when off) I have suddenly been plagued by an issue in which I cannot find any similar ones with a search. I am running about 20 game servers that bind to a UDP port, then bind to a TCP port 1 above the UDP port. Suddenly, a day ago, new TCP binds stopped functioning. Now, I have confirmed that other applications cannot listen on most ports. For example, I have a java program that I made a copy of, and tried the following ports: 33001, 23789, 89... completely random ports. As far as the applications already that have TCP bindings, such as HTTP and MySQL, only port 8080 was one port I discovered could work, and only for Apache. If applications would leave their default port they could not bind, however they returned to normal when the port was default. I've checked for listening applications through netstat and curports, also checked for any connections on these ports, and they're completely free.

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  • Increasing FreeBSD threads

    - by sh-beta
    For network apps that create one thread per connection (like Pound), threadcount can become a bottleneck on the number of concurrent connections you can server. I'm running FreeBSD 8 x64: $ sysctl kern.maxproc kern.maxproc: 6164 $ sysctl kern.threads.max_threads_per_proc kern.threads.max_threads_per_proc: 1500 $ limits Resource limits (current): cputime infinity secs filesize infinity kB datasize 33554432 kB stacksize 524288 kB coredumpsize infinity kB memoryuse infinity kB memorylocked infinity kB maxprocesses 5547 openfiles 200000 sbsize infinity bytes vmemoryuse infinity kB pseudo-terminals infinity swapuse infinity kB I want to increase kern.threads.max_threads_per_proc to 4096. Assuming each thread starts with a stack size of 512k, what else do I need to change to ensure that I don't hose my machine?

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  • Installing raid controller forces reinstall of Windows Server 2008

    - by Tyler
    So, I've tried two different RAID controllers that have external SATA connections on my Server 2008 machine. I can install the hardware, boot into Windows, install the drivers and reboot again. No problems. However, as soon as I try to use eSATA-connected drives and reboot something happens to the Windows install and I can no longer boot into Windows. I tried repairing from the command line, and the end result is that repair console tells me I have 0 Windows installations (?). I end up having no choice but to reinstall Windows to get back on track. I must be doing something fundamentally wrong here, but I don't know what :(

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  • Predictive vs Least Connection Load Balancing Techniques

    - by Mani
    I have a windows based desktop application that communicates via TCP to the application servers. (windows 2003). No sticky sessions between client calls. We have exactly 2 servers to load balance and we are thinking to use a F5 hardware NLB. The application is a heavy load types, doing not much bussiness logic in the services but retrieving quite a big amount of data at most of the times. May be on an average 5000 to 10000 records at all times. Used mainly for storing and retirieving data and no special processing of data or calculations running on the server side. I am favouring 'predictive' considering my services take a while at times to return data and hence tracking the feedback would yield some better routing as in predictive. I am not sure if the given data is sufficient enough to suggest some ideas but considering these, what would be some suggestions\things to consider\best between Predictive and Least Connections ? Thanks.

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  • What causes winsock 10055 errors? How should I troubleshoot?

    - by Tom Kerr
    I'm investigating some issues with winsock 10055 errors on a chain of custom applications (some of which we control, some not) and was hoping to get some advice on techniques to troubleshoot the problem. No buffer space available. An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. From research, non-paged pool and ports seem to be the only resources which can cause this error. Is there another resource which might cause 10055 errors? Currently, we have perfmon counters setup on the applications and non-paged pool usage looks low in most circumstances. Open TCP connections looks low and I am unaware of another way to monitor ports. Since it only happens in production, we are unable to use more invasive counters. Is there some other tool or procedure you would recommend to diagnose which application is causing the issue?

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  • Route gameserver traffic through cloudflare?

    - by Michael
    I use cloudflare for my website and we have a gameserver I was wondering if it is possible to route traffic through cloudflare. This recently sprung into my head when I realized that I could route Shoutcast through another of cloudflares port (8080) which does not do any performance enhancing or anything it just acts as a reverse proxy and stops DDoS. I then tried by setting up a subdomain with my gameserver IP cloudflared and then pinged the IP and Port. It seems to have connections but when actually connecting via the game it doesnt. Any ideas?

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  • forward ssh ports on EC2

    - by Will Glass
    I have an SSH server on a private subnet within an EC2 vpc listening for ssh on port 9022 I also have a nat instance (standard Amazon EC2 nat) on a public instance. I would like to forward incoming SSH connections (port 9022) to my nat to the internal server (port 9022). I tried this, but it didn't work: sudo iptables -t nat -I PREROUTING -p tcp -i eth0 --dport 9022 -j DNAT --to-destination 10.0.2.11:9022 I verified that 10.0.2.11 is listening on port 9022. (I can telnet). I verified my security group allows incoming port 9022. I verified that /proc/sys/net/ipv4/ip_forward is 1. What am I missing? Edit: Turns out this was correct after all. I had a mistake in my security group.

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  • Disabling weak ciphers on Windows 2003

    - by Kev
    For PCI-DSS compliance you have to disable weak ciphers. PCI-DSS permits a minimum cipher size of 128 bits. However for the highest score (0 I believe) you should only accept 168 bit ciphers but you can still be compliant if you permit 128 bit ciphers. The trouble is that when we disable all but 168 bit encryption it seems to disable both inbound and out bound secure channels. For example we'd like to lock down inbound IIS HTTPS to 168 bit ciphers but permit outbound 128 bit SSL connections to payment gateways/services from service applications running on the server (not all payment gateways support 168 bit only we just found out today). Is it possible to have cipher asymmetry on Windows 2003? I am told it is all or nothing.

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  • What can I do to give some more love and disk space to my database on Ubuntu?

    - by Yaron Naveh
    I'm new to linux. I've deployed a db to ubuntu server on amazon and found out I'm low on disk space. did df (see below) - and found out that I'm 89% capacity on one file system, but less on others. What does this mean? Do I have a few partitions and can now utilize others besides /dev/xvda1? Also /dev/xvdb seems large, is it safe to put the db in it and only use it? If so do I need to mount it or do something special? $> df -lah Filesystem Size Used Avail Use% Mounted on /dev/xvda1 8.0G 6.7G 914M 89% / proc 0 0 0 - /proc sysfs 0 0 0 - /sys none 0 0 0 - /sys/fs/fuse/connections none 0 0 0 - /sys/kernel/debug none 0 0 0 - /sys/kernel/security udev 3.7G 8.0K 3.7G 1% /dev devpts 0 0 0 - /dev/pts tmpfs 1.5G 164K 1.5G 1% /run none 5.0M 0 5.0M 0% /run/lock none 3.7G 0 3.7G 0% /run/shm /dev/xvdb 414G 199M 393G 1% /mnt

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  • How to disable Tcp/Ip settings in windows 7 via GPO?

    - by Akash Kava
    I have enabled following policies, "Prohibit TCP/IP advanced connection" "Prohibit access to properties of components of a LAN connection" "Enable Windows 2000 Network Connections setings for Administrators" after doing all these, all machines running windows xp, 2000 and vista have network settings properties button disabled as expected. However all machines running windows 7 have no effect, I believe there are few more steps, all Windows 7 machines are on domain and we want to control this via Domain Controler's GPO. Please let me know, what I need to do to have Windows 7 disable the properties of network connection, I am not network expert, I read few articles about what new has been added in GPO of windows 7 but I am blank. Everything works fine on Windows XP, Vista, 2003 Server. Only Windows 7 is a problem.

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  • Lingering tcp connection in LISTEN state

    - by Silvio Donnini
    My java application can sometimes be killed by an external script. This can be done either with SIGTERM or with SIGKILL. The application is a server which receives many connections per second, and it can be killed while trying to serve them. I would like to restart the application whenever it's killed, so I have prepared a script for that purpose. The problem is that, once the app has been killed, the new application instance can't bind to the port used by the previous instance, because the "Address is already in use". The previous instance's process has been definitely terminated, anyway the offending listening port is still there, but it is assigned to bash (or sh on other machines). Obviouly, my goal is to restart the application and let it bind successfully to the previous address. I've tried waiting more than 200 seconds before restarting to no avail, anyway I can't afford to wait that much. I've encountered this problem on all the machines I've ran the application (which is a jetty server with java 1.6). Any suggestion is appreciated, thanks, Silvio

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