Search Results

Search found 13119 results on 525 pages for 'tcp ip'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 336/525 | < Previous Page | 332 333 334 335 336 337 338 339 340 341 342 343  | Next Page >

  • Shaping outbound Traffic to Control Download Speeds with Linux

    - by Kyle Brandt
    I have a situation where a server makes lots of requests from big webservers all at the same time. Currently, I have not control over the amount of requests or the rate of the requests from the application that does this. The responses from these webservers is more than the internet line can handle. (Basically, we are launching a DoS on ourselves). I am going to get push to get this fixed at the application level, but for the time being, is there anyway I can use traffic shaping on the Linux server to control this? I know I can only shape outbound traffic, but maybe there is a way I can slow the TCP responses so the other side will detect congestion and this will help my situation? If there is anything like this with tc, what might the configuration look like? The idea is that the traffic control might help me control which packets get dropped before they reach my router.

    Read the article

  • How to access Java servlet running on my PC from outside ?

    - by Frank
    I used Netbeans6.7 to write a servlet, when it runs, it opens a browser window with this address : http://localhost:8080/My_App/Test_Servlet, I replaced the "localhost" with my IP address, now it looks like this : http://192.???.1.??:8080/My_App/Test_Servlet, but I tried to access it from another computer outside my home, it can't read anything, I wonder if I need to change Windows Fire Wall setting to allow outside traffic, it's a Paypal IPN app, so I call Paypal, they said they can't access : http://192.???.1.??:8080/My_App/Test_Servlet What on my side should I do to allow traffic from "paypal.com" to access "My_App/Test_Servlet" ? Frank

    Read the article

  • Non-Linear Database Retrieval

    - by pws5068
    I'm building an article system, and each article will have one more Tags associated with it (similar to the Tags on this site). The tables are set up something like this: Article_Table Article_ID | Title | Author_ID | Content | Date_Posted | IP ... Tag_Table Tag_ID | Name ... Tag_Intersect_Table Tag_ID | Article_ID Is it possible query an article and all of its associated tags in one database call? If so, how is this done?

    Read the article

  • How to set up an FTP user on UBUNTU 9 server using vsftpd utility?

    - by Pavel
    Hi guys. I'm kinda new to this so bear with me. I've set up a server and now I need to create ftp user for it. I'm doing this by typing: useradd pavel passwd pavel And then I'm running iptables -I INPUT 1 -p tcp --dport 21 -j ACCEPT iptables-save > /etc/iptables.rules in order to open ftp ports and lastly, I'm changing the usermod by: usermod -s /bin/sh pavel So now tell me - what I'm doing wrong here? I just want to connect using FTP protocol. Please help...

    Read the article

  • 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

    Read the article

  • apache tomcat loadbalancing clustering on ubuntu

    - by user740010
    i am facing a problem in clustering the tomcat with apache as a loadbalancer using mod_jk on ubuntu. i have install apache2 on my ubuntu 11.04 and i have downloaded tomcat7 created two copies and kept them at two different location. 1st one is at /home/net4u/vishal/test/tomcatA 2nd one is at /home/net4u/vishal/test1/tomcatB i have made following changes to server.xml file in /conf folder 1. <Server port="8205" shutdown="SHUTDOWN"> 2. <Connector port="8280" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> 3.<Connector port="8209" protocol="AJP/1.3" redirectPort="8443" /> <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcatB"> 4. <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> similarly i have modified other tomcat i.e tomcatA server.xml content of the server.xml is as follow: -- <!--The connectors can use a shared executor, you can define one or more named thread pools--> <!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" minSpareThreads="4"/> --> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8080 --> <Connector port="8280" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <!-- A "Connector" using the shared thread pool--> <!-- <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> --> <!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation --> <!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> --> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8109" protocol="AJP/1.3" redirectPort="8443" /> <!-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html --> <!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcatB"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- uncomment for clustering--> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> <!-- Use the LockOutRealm to prevent attempts to guess user passwords via a brute-force attack --> <Realm className="org.apache.catalina.realm.LockOutRealm"> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> <!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Access log processes all example. Documentation at: /docs/config/valve.html Note: The pattern used is equivalent to using pattern="common" --> <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log." suffix=".txt" pattern="%h %l %u %t &quot;%r&quot; %s %b" resolveHosts="false"/> </Host> </Engine> i have install libapache2-mod-jk step 1. i have Created jk.load file in /etc/apache2/mods-enabled/jk.load content is as follows: LoadModule jk_module /usr/lib/apache2/modules/mod_jk.so Create /etc/apache2/mods-enabled/jk.conf: JkWorkersFile /etc/apache2/workers.properties JkLogFile /var/log/apache2/jk.log JkMount /ecommerce/* worker1 JkMount /images/* worker1 JkMount /content/* worker1 step 2. Created workers.properties file in /etc/apache2/workers.properties content is as follows: workers.tomcat_home=/home/vishal/Desktop/test/tomcatA workers.java_home=/usr/lib/jvm/default-java ps=/ worker.list=tomcatA,tomcatB,loadbalancer   worker.tomcatA.port=8109 worker.tomcatA.host=localhost worker.tomcatA.type=ajp13 worker.tomcatA.lbfactor=1   worker.tomcatB.port=8209 worker.tomcatB.host=localhost worker.tomcatB.type=ajp13 worker.tomcatB.lbfactor=1 worker.loadbalancer.type=lb worker.loadbalancer.balanced_workers=tomcatA,tomcatB worker.loadbalancer.sticky_session=1 i tried the same thing on the windows machine it is working.

    Read the article

  • Is opening ports in the firewall bad?

    - by Steven
    From what little I know about networking, opening ports lets external data get sent in. But how that data is handled is entirely up to the applications running on my machine. So if I'm not running any malicious applications, there should be nothing wrong with disabling the firewall, right? Also, how do applications work when ports aren't forwarded? For example, I need to forward port TCP 6112 to host Blizzard games, but I've heard that HTTP uses port 80, but I haven't forwarded that port, yet Firefox still works. Btw I'm using Windows Vista.

    Read the article

  • Port forwarding does not work always?

    - by ITFan
    I opened port 25374, this is eMule TCP port, then I use canyouseeme.org to check if it is really opened. I got the weird problem : when eMule is running, canyouseeme.org see my port. I got the message : "Success: I can see your service on xxx.xx.xxx.xx on port (25374) Your ISP is not blocking port 25374" When I close eMule then check the port again on canyouseeme.org I got : Error: I could not see your service on xxx.xx.xxx.xx on port (25374) Reason: Connection timed out But when I turn off the windows firewall I got a different error : Error: I could not see your service on xxx.xx.xxx.xx on port (25374) Reason: Connection refused Can anyone please explain to me why it happened like that and how to make the port always opened ? Thanks

    Read the article

  • Windows XP periodically disconnects, reconnects; Windows 7 doesn't

    - by einpoklum
    My setup: I have a PC with a Gigabyte GA-MA78S2H motherboard (Realtek Gigabit wired Ethernet on-board). I have the latest drivers (at least the latest driver for the NIC. I'm connecting via an Edimax BR-6216Mg (again, wired connection). For some reason I experience short periodic disconnects and reconnects. Specifically, Skype disconnects, tries to connect, succeeds after a short while; incoming SFTP sessions get dropped; using a browser, I sometime get stuck in the DNS lookup or connection to the website and a page won't load. A couple of seconds later, a reload works. All this happens with Windows XP SP3. With Windows 7, it doesn't happen. The connection is smooth (OS is sluggish though, but never mind that). Like I said, I updated the NIC driver. I tried reducing the MTU (used something called Dr. TCP), thinking maybe that would help, but it didn't. (I'm a bit but not super-knowledgeable about TCP parameters.) I'm guessing it's either a problem with the driver or some settings which are different between the two OSes. ipconfig for my adapter: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller Physical Address. . . . . . . . . : 00-1D-7D-E9-72-9E Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.0.2 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.0.254 DHCP Server . . . . . . . . . . . : 192.168.0.254 DNS Servers . . . . . . . . . . . : 192.117.235.235 62.219.186.7 Lease Obtained. . . . . . . . . . : Saturday, March 10, 2012 8:28:20 AM Lease Expires . . . . . . . . . . : Friday, January 26, 1906 2:00:04 AM

    Read the article

  • Memcached failover

    - by user25164
    We have 2 memcached servers configured and use the Eniym client. When one of the server is down, it appears this server is added to the deadServers list (ServerPool.cs) and tries to resurrect the server every 10seconds (we have configured deadTimeOut to be 10seconds). Attempting to connect to the failed server causes a TCP timeout, the pages take a long time to load which results in bad user experience. 1) What is the standard way of resolving this issue? There are some posts about removing the server from the deadServers list. Is it okay to do this? 2) What is the recommended deadTimeOut setting (I understand by default it's 2 mins and we've changed it to 10seconds in our implementation) 3) Am I correct in my understanding that the cached data is not replicated across Server 1 and Server 2? If Server 1 is down, then it goes to the database to fetch these values (and it doesn't really check Server2)? Any help is really appreciated.

    Read the article

  • PostgreSQL won't start anymore

    - by Sander Declerck
    Today, my PostgreSQL doesn't start anymore on my windows machine... I've tried to start the service in windows services and got the following error: Windows could not start the PostgreSQL Database Server 8.3 service on Local Computer. Error 1053: The service did not respond to the start or control request in a timely fashion. Then I went to the command line to manually start C:/Program Files (x86)/PostgreSQL/8.3/bin/psql.exe, and then I got this error: psql: Could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "???" and accepting TCP/IP connections on port 5432? Edit: I found this in the logs: 2011-04-22 13:13:16 CEST LOG: could not receive data from client: No connection could be made because the target machine actively refused it. 2011-04-22 13:13:16 CEST LOG: unexpected EOF on client connection

    Read the article

  • vsftpd status stop/waiting Ubuntu

    - by Majin Vegeta
    I'm trying to configure ftp over amazon EC2 instance, I've installed vsftpd and did the steps of adding user and modifying the vsftpd.conf file, but I'm getting my service status as ubuntu@ip-10-38-106-212:~$ sudo service vsftpd status vsftpd stop/waiting I've tried to reinstall vsftpd but still getting the same, I've also added the port 20 and 21 in my security group policy to skip the firewall. Can anyone tell me how to check whats wrong with this vsftpd, why its stopped and not coming into running state. Thank u

    Read the article

  • How to clear stuck locked maildrop pop3 process

    - by Joshua
    I am using cyrus for imap and pop One of my users is getting the following error: Unable to lock maildrop : Mailbox is locked by POP server. I can see where it starts in the log. I've read that there is no physical lock file anymore (i've tried looking for it anyways) and that the solution is to just wait for the timeout, or kill the offending pop3 process. I know that this is happening because of a lossy connection on the part of the affected user, and that pop3 can only have 1 session active at a time. I need to manually clear the lock and I am having trouble finding the offending pop process. I have tried lsof, but it doesn't say how long the individual files (sockets) have been opened for. I've reduced the tcp keepalive time down to 5 mins, but I still need to reset this guy's lock. I could use some pointers. Thanks!

    Read the article

  • how to access locally deployed webapp on ipodtouch ?

    - by abhinav
    Hi, I have a wifi network at home with a couple of laptops. I am running a Tapestry webapp on my machine. I can access this webapp from the other laptop if I use the IP address of my machine (I mean enter something like : http://192.168.1.53:8080/webapp/index.html). However, when I try to do so in Safari on my iPodTouch, it fails. Could someone point out what's the problem here ? Thanks, Abhinav.

    Read the article

  • IIS restart causes many Connection_Abandoned_By_AppPool messages in log

    - by PP
    After about half a day the IIS 6.0 ASP (VBScript) web server appears to die. It accepts TCP connections (i.e. I can telnet localhost 80 successfully) however it does not return any response. When I restart the server (going through My Computer - Manage - IIS - All Tasks - Restart) I get a lot of entries in C:\WINDOWS\system32\LogFiles\HTTPERR\httperr1.log at the time of restart that say: ... 80 HTTP/1.1 GET / - 843545307 Connection_Abandoned_By_AppPool DefaultAppPool ... 80 HTTP/1.0 GET / - 843545307 Connection_Abandoned_By_AppPool DefaultAppPool ... 80 HTTP/1.0 GET / - 843545307 Connection_Abandoned_By_AppPool DefaultAppPool where the ... refers to the prefix of the line, e.g. 2010-03-17 10:05:06 127.0.0.1 4927 127.0.0.1 80 There are 583 such lines (Connection_Abandoned_By_AppPool) in my log at time of restart. What could be the cause of this problem?

    Read the article

  • validate hostname string in Python

    - by kostmo
    Following up to Regular expression to match hostname or IP Address? and using Restrictions on valid host names as a reference, what is the most readable, concise way to match/validate a hostname/fqdn (fully qualified domain name) in Python? I've answered with my attempt below, improvements welcome.

    Read the article

  • Simple monitoring utility with up/down statuses of the host's network connectivity and services

    - by Beaming Mel-Bin
    We've looked at many monitoring tools (SolarWinds, Zabbix, Nagios) through out the last 10 years but they never took hold because they are overly complicated. I am willing to try them again or something new at this point but with a much simpler goal: ping to check up and down of host tcp probes to test up and down of service notifications via e-mail web GUI prefer an OSS solution Wanted to know if someone has any recommendations on this. This could be a Windows or Linux application. Preferably without the reqirement of agents. I don't even need SNMP support but that may be nice for expanding once we have the above mentioned bare minimum in place.

    Read the article

  • Download file from a regular site via proxy c#

    - by Dani
    I need to be able to download some file from a regular site using my proxy server, I already try this: System.Net.WebClient client = new System.Net.WebClient(); client.Proxy = new WebProxy(ip, port); client.DownloadFile(url); but it's not works at all, I don't know what I missed,(without a proxy it works) thanks, Dani.

    Read the article

  • With dnsmasq as the DNS server, 'dig' and 'ping' succeed while 'nslookup' fails

    - by einpoklum
    I installed dnsmasq on a machine of mine (It's a Kubuntu 12.04 LTS), backed only by /etc/hosts (no connection to the Internet until later). Now, if I dig mymachine, I get 192.168.0.1, but if I try to nslookup mymachine, I get: >> connection timed out; no servers could be reached Tried also nslookup mymachine.mynicedomain.org - didn't work either. pinging (Edit:) succeeds. This happens both on the server machine itself and on other machines on the network. How can I the DNS lookups to work? What problem is preventing nslookup from succeeding? Additional Information In the server's /etc/hosts: 192.168.0.1 mymachine In the server's nsswitch.conf: hosts: files mdns4_mininal [NOTFOUND=return] dns mdns4 (admittedly, this is a bit weird; but I also tried: hosts: files dns instead, with the same effect) In resolv.conf (which is generated by dnsmasq): nameserver 127.0.0.1 search mynicedomain.org In the server's /etc/hosts.allow: domain: ALL In the other machines' /etc/resolv.conf (this is set by the DHCP client): nameserver 192.168.0.1 search mynicedomain.org Relevant netstat output on the server: Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN tcp 0 0 192.168.0.1:53 0.0.0.0:* LISTEN Finally, here's the ipconfig output from one of the client machines on the network (running Windows 7): Connection-specific DNS Suffix . : mynicedomain.org Description . . . . . . . . . . . : Intel(R) 82579LM Gigabit Network Connection Physical Address. . . . . . . . . : 12-34-56-78-9A-BC DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.0.50(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Sunday, October 20th 2013 16:20:25 Lease Expires . . . . . . . . . . : Sunday, October 20th 2013 18:20:24 Default Gateway . . . . . . . . . : 192.168.0.1 DHCP Server . . . . . . . . . . . : 192.168.0.1 DNS Servers . . . . . . . . . . . : 192.168.0.1 NetBIOS over Tcpip. . . . . . . . : Enabled Notes: May be related to this question.

    Read the article

  • use of tcp_delack_min on redhat linux (kernel 2.6.18)

    - by user41466
    Hello, we're moving from Solaris to Redhat Linux, and trying to duplicate our low-latency setup, that, on solaris, includes the ndd settings related to TCP NO DELAY, and NAGLE ALGORITHM. I got the impression that those parameters are not all configurable system-wide, but still found some info. we have configured our applications to run with no nagle algorithm, but that is not sufficient. we have found an interesting RH article talking presenting the tcp_delack_min parameter, however, when browsing /proc/sys/net/ipv4/ , I can't find it there. would it be safe to assume that simply "adding" the parameter as it's said on the doc would be enough, or rather that the option is not supported by this version (would be strange, as RH specify that it "can be performed on a standard Red Hat Enterprise Linux installation") ? any other idea / recommendation to improve latency further ? thanks

    Read the article

  • Can't enable Windows XP file sharing

    - by colemanm
    The "sharing and security" option in the right-click context menu on a folder is no longer there. The File and Print sharing option is "installed" and turned on in the TCP/IP properties, but the ability to share any folders has disappeared, along with all previously shared folders. Where should I check to see what the issue is here? EDIT From comments below: "Server" service is not starting, see comment below for more... Firewall is completely disabled, too. This is XP Pro, Simple File Sharing is turned on. We've discovered that the "Server" Windows service is not starting on bootup for some reason. When attempting manual start, we get "error 2001: specified driver is invalid."

    Read the article

  • apache2 slow responding (debian)

    - by baloo
    I'm running an apache2 2.2.9 webserver with modpython and mpm_worker_module. The current config for the mpm is ServerLimit 32 StartServers 10 MaxClients 800 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 The server has 1G of ram and a 100Mbit connection. Checking netstat -na | grep ESTABLISHED | wc -l gives me a number between 50 - 60. The load is about 1.0 Every pageload is also cached by memcached. I can't see why the server is so slow in responding to new connections, sometimes droping them completely? Also tried disabling iptables to make sure it's not because of a full state table or something like that. The only thing in dmesg is a lot of spam about "TCP: Treason uncloaked!"

    Read the article

  • How to improve long text readability in Chrome?

    - by amiregelz
    I need to start reading The TCP/IP Guide. I have to admit that compared to other informative guides/tutorials/articles out there, this guide isn't so cluttered. However, I still find it a little bit hard to read, especially when reading for several hours. I don't know if it's the font, the contrast or the spacing, but this is why I've always preferred learning from books rather than from the internet. What can I do to make this guide more readable? I am reading it on Google Chrome.

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 332 333 334 335 336 337 338 339 340 341 342 343  | Next Page >