Software :: Where Are Server Bogus Sessions Open
Jan 27, 2011
I've used NoMachine's NX software for some time, but on one of my machines it simply will not work. At first it did, but now when I log in it authenticates, starts downloading a session, but then drops dead. There is no hint of what the problem may be except in /var/log/messages on the server machine:
User 'bill' from '192.168.1.1' logged out. 'NXLogin::reset'
Notice that it's a login reset, after authentication went fine. Researching this I find the problem is often caused by a missing fixed font, which is remedied with an: # apt-get install xfonts-base --reinstall but that doesn't help. I have completely deinstalled and purged the three Nomachine packages on the server, deleting all associated directories, and reinstalled them, but no help. From my client machine I can log into a NX session just fine, so I'm sure it's not the client machine. The Linux version of this software has a limit of 2 sessions, and I suspect the server may have some bogus sessions open, but where? I've done a purge and deleted /usr/NX and /home/bill/.nx so where else could this be?
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Jun 18, 2009
I am using using Red Hat Enterprise Linux ES release 3 (Taroon)
dhcp server ver: dhcp-3.0pl2-6.14
I am trying to bind macid 00-21-6B-A1-C9-4C & 00-15-00-1D-AD-57; but it give, when I start dhcp service, I get the following error messages. I am sure macid are absolutely correct. Following the error message I get.
Starting dhcpd: Internet Software Consortium DHCP Server V3.0pl2
Copyright 1995-2003 Internet Software Consortium. All rights reserved.
For info, please visit [URL]
/etc/dhcpd.conf line 2196: Bogus number: 00-21-6B-A1-C9-4C.
hardware ethernet 00-21-6B-A1-C9-4C;
Configuration file errors encountered -- exiting
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Sep 1, 2011
Is there a way to determine the time of last reboot and open all sessions and/or files that were open with a BASH script?
Oh also on this topic, does anyone know where a good repository of BASH, PERL and other Linux System Scripts are?
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Apr 8, 2009
I look after a server which accepts automatic overnight PASV FTP uploads from remote clients. When the uploads are complete, my Bash script copies the files to another location. The problem is, my script needs to be a bit smarter when it comes to detecting active FTP sessions.
I was using:
Code:
netstat -n | grep ":21 " | grep ESTABLISHED
to test if there were active sessions, but came unstuck when a local user left an unrelated FTP session active. The result - my script hung around all night thinking there was an active upload from a remote client. My server is behind a firewall, so remote clients all show an internal (NAT) address,so I can't differentiate by source IP address.I can't install LSOF or FUSER for security reasons. Is there a way I can test for active FTP sessions from specific users? I am running Red Hat Enterprise Linux Server release 5.2 (Tikanga).
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Aug 21, 2010
I've two internet based server ( xx.xx.xx.xx and yy.yy.yy.yy ) The Y server is running VNC server and is responsible for answering to VNC sessions. But I need to hide the IP of Y server so I want X server to be as VNC Proxy and redirect all VNC sessions to Y server.
I guess the best way is to use iptables but actually I can't get it working so
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Mar 20, 2010
I am using Fedora 12 and i have enable XDMCP i have boot client with dhcp all is going well but when remote user logout than remote client display XDMCP: fatal error: Session declined Maximum number of open sessions. and after that i have reboot Fedora 12 server than it will work but after logout it will again create same problem.
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Dec 10, 2010
I have an issue with my web server. We are running RedHat Enterprise Linux 3.0 with Apache 2.0 and Tomcat 5.5. The situation has arisen that the httpd sessions never terminate. New connections continue and continue to be created and never die. I have restarted the apache services to reset the connection and have even rebooted the server, however, to no avail. Yes, that does the trick of getting the web sites operational, however, this is not a solution.
I have searched and searched here, www.google.com/linux to no avail. I have looked through the apache.org bug tracker and can't find anything like what I am experiencing. This happened 6 months ago and I got lucky and it stopped, however, the situation has resurfaced. I have reviewed the logs and found nothing that provides any insight.
During the business day, the number of httpd connections continue to grow and I decided to let it see how high it would get before the web sites would crash. That magical number is 203. Now that it is later in the evening and about 2 hours since I restarted the httpd services, I now only have 59 connections. However, I'm fairly certain based upon the traffic on these 2 websites, that in the evening, there aren't many connections after 2000 hours.
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Jul 21, 2011
after installing Debian 6 on a server. When I try to install a software called ActiveCampaign, I get the following error ... "Your server does not appear to be handling sessions properly."I have install Apache, PHP, MySql and Perl already. Also, after the server restarts, I Webmin will not automatically start, even thou it is setup in the Webmin configuration to start with the server. I have to use /etc/init.d/webmin start from a command line after I su.
My last question is about ftp permissions. I have install proftpd and it seems to be working fine, but when I try to edit any file or upload, I can not. In order to upload and manipulate files, I am using WinSCP under root, wich is a big NO NO.Sorry for the three questions, but I figured I would ask all in one post, instead of creating multiple, since I already have your attention.
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Oct 5, 2010
Here's the setup: One x86 server (Red Hat 4) with two serial connections to an embedded linux device. One serial connection is to a power control so the device can the restarted, and the other is used for a console to this device. Both serial connections use minicom. People on my team VNC to the x86 server, where they find the two minicom sessions waiting for them as they are left open. I would like to automate connecting to the server and communicating over the serial lines.
Supposing I use ssh to the x86 server, could minicom be used over the serial lines without terminating the minicom processes seen through VNC? If not, is there a way to re-open those windows from within the ssh session, so a user who VNCs to the server won't have to reopen them? Could a single ssh connection control two minicom terminals simultaneously, or would there need to be two ssh connections? It is assumed a user and the automated process will *not* try to access the device at the same time; the automation would trigger during off hours.
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Dec 22, 2010
We started hosting some very large content on our site, and the usage patterns in cacti have revealed that the HTTP sessions through our load-balancers drop off dramatically right at midnight.
The logrotate process runs right at midnight, and issues a reload command through the service tool (CentOS 5.5):
Code:
$ cat /etc/logrotate.d/httpd
/data/websites/logs/*_log /var/log/httpd/*log {
missingok
daily
dateext
compress
rotate 7
sharedscripts
postrotate
/sbin/service httpd reload > /dev/null 2>/dev/null || true
endscript
}
Looking at the init script reveals that the reload section is suppose to trigger a HUP of the httpd process:
Code:
reload() {
echo -n $"Reloading $prog: "
if ! LANG=$HTTPD_LANG $httpd $OPTIONS -t >&/dev/null; then
RETVAL=$?
echo $"not reloading due to configuration syntax error"
failure $"not reloading $httpd due to configuration syntax error"
else
killproc -p ${pidfile} $httpd -HUP
RETVAL=$?
fi
echo
}
In which, Apache should reload it's configuration and start the new logfile without breaking current sessions. However that clearly isn't what is going on. I'm tempted to edit the logrotate script to trigger a HUP directly by cat'ing the PID file directly. Is this normal behavior for Apache when signaled with a HUP?
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Jul 6, 2010
1-what is the shell command which allows me to know how many opened sessions on a mysql server?
2- what are the important points we can manage in a mysql server?
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Apr 25, 2011
i m using Centos 5.4 Dovecot and Sendmail serve my secondary server have some problems and shwoing me BOGUS files in var/mail
m using Centos 5.4 wiht dovecot and Sendmail my all users receiving a message 20times every time when they press their send/receive button three messages are repeating on every system i deleted all mail from my accounts but some of my accounts facing this problem
i have another problem when i insert my Cd or DVd in DVDwrite on my server and mount him mount /dev/scd0 ---- it dispaly that dev/scd0 does not exist in et/fstab i tried it clicking on DVDWriter Mount but seems error no media,..
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Nov 24, 2009
I'm running VNC Server on CentOS5 on a brand new installation, this is for some of my students to use specific software via VNC on their machines from home that they otherwise don't have access to on their Windows machines. This has been working fine on our previous server for a few years but the hardware is now outdated so I have upgraded and put a fresh install of CentOS 5 on. This works fine for about 24 hours and then eventually one of the session ends up freezing where the user then can see everything on their session, the cursor can move but they cant click a single thing.
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Nov 4, 2010
having a weird problem with my wireless connection on a Dell Latitude E6400 laptop.This machine has a Dell 1510 half-card. It uses a Broadcom chipset.I've gotten to the point where fedora sees the card, and I can create wireless connections. But every time I try to connect to a network, it scans, connects, and disconnects several times, until it gets a completely bogus IP address, that has nothing to do with any of the networks onnect to. It is always "10.42.43.1", yet I have no static configuration for that address.
Code:
# lspci|grep -i wireless
0c:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN
[code]....
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Dec 2, 2010
I've been banging my head against the screen on this strange problem. Somehow my server sends out spam mails to a lot of aol mail addressess. The mail.log file looks like:
Code:
Dec 2 16:10:55 Ubuntu-904-jaunty-64-minimal postfix/qmgr[7685]: E95C2B48DB4: from=<HappyShopping@somedomain.nl>, size=1912, nrcpt=1 (queue active)
Dec 2 16:10:55 Ubuntu-904-jaunty-64-minimal postfix/qmgr[7685]: 5D4E0B48DB5: from=<HappyShopping@somedomain.nl>, size=1904, nrcpt=1 (queue active)
Dec 2 16:10:55 Ubuntu-904-jaunty-64-minimal postfix/qmgr[7685]: 8F540B48D04: from=<NewYearSale@somedomain.nl>, size=1894, nrcpt=1 (queue active)
[Code]...
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May 3, 2010
Not sure why, but the last couple of tiems I have started xampp from root terminal, I have got this message after each program start.
Warning a bogus unix line
Since that last time it was not there, other that add sweb spahes etc., I have only tried to unpack the Control Panel which was unsuccesfull anyway saying I needed some other programs.
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Jul 4, 2010
An a stable FC13 system, after resolving deps and downloading rpms, 'yum update' aborts with this single error message:Transaction Check Error:installing package kernel-PAE-2.6.33.5-124.fc13.i686 needs 801KB on the /boot filesystem.Silly thing is, I have at least 52MB available on /boot.An important datapoint is that I resized the boot partition since the initial install from 64MB to 128MB, which makes me think perhaps yum or anaconda recorded the original partition size, and is not looking at the current (correct) size of /boot.
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Jan 20, 2011
During Slackware 13.1 setup, I chose the hostname stella-sl2. This hostname is also the one that the system is displaying before I configured network access. After configuring wired network access to my Apple Time Capsule, my hostname suddenly changed to INTERFACE='eth0'. As a result I'm noticing some very strange things, like the login prompt which has become "INTERFACE='eth0' login: ".
After configuring wireless network access to the Time Capsule, the hostname changed to "INTERFACE='wlan0'". Note that, during boot, wlan0 is brought up AFTER eth0.
Also strange is this:
bash-4.1$ cat /etc/HOSTNAME
INTERFACE='eth0'.DNSSERVERS='10.0.1.1'
bash-4.1$ /bin/hostname
INTERFACE='wlan0'
bash-4.1$
Until now, it was only a minor annoyance, it didn't prevent anything from happening, internet connection was not affected. But now I'm configuring sendmail which needs to talk to a relay SMTP server, and sendmail "HELO"'s itself using the bogus hostname:
>>> HELO INTERFACE='wlan0'
<<< 501 HELO requires valid address
554 5.0.0 Service unavailable
Probably this is caused by the Time Capsule not adhering to standards. However, the Time Capsule's firmware is the latest version, so I cannot fix this. Is there a way to prevent dhcp from changing the hostname? How can I make sure that the hostname that I configured during setup remains active?
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Apr 14, 2010
I have sendmail running on my centOS 4.6. My lamp server also runs on it. I want to send mail through php mail function. when i execute php page, which fires the mail function, it takes so much long tim1 say even 1 minute, and at last displays that message sent successfully. Suppose, destination address is [URL].... I did not get any mail there. My server is running in LAN. I checked the status of sendmail, it shows me that it ios running. when i issue "nmap localhost" it shows me that SMTP port 25 is open, but when i issue "nmap myserver" (192.168.1.20 myserver ( written in hostfile)), it does not show that SMTP port is open.
I checked the /var/log/maillog, one person in my previous post advice me to see that. There it shows that message is accepted for delivery...but i do not get any mail in my destination, even not in spam folder. One more confusion is that, in my case my server is in LAN and if I am at all enable to open the SMTP port on it, does i need to open SMTP port on my router (which connects my LAN to internet) also needs to open? I think no, because SMTP is application layer protocol, it will wrap my mail in IP packet, which router just need to forward. am i right?
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Jan 27, 2010
I have configured a squid proxy; it's running, but there was a problem: it does not provide service to client side.
The error was: "could not connect to session manager" "cannot open the network socket"
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Jan 29, 2010
i want to configure an Open LDAP server in Ubuntu....and also want it to connect to its clients, i have two machines for testing,one for client & one for server, i followed the tutorials on ubuntu documentation,but did not succeed in making either the client or the server,
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Jul 25, 2011
Because our visitors/customers are short term, and may be configured incorrectly with their own mail servers we automagically redirect all port 25 traffic going to internal IP's to our own mail servers while on our network.(postfix on centos 5.6)While I have taken some measures to prevent it from spamming, I would greatly appreciate some assistance.I will be putting in clamav, but I haven't configured it yet with the mail.I am using postfix, but can also put on procmail or even spam assassin
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Jul 30, 2010
Has anyone setup an ubuntu server as an Open Directory Server for MAX OS X, and other Open Directory clients?
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Jan 2, 2010
GDM has no session options listed when I click on my username. I should have openbox and lxde. I read that GDM finds it's sessions from /usr/share/xsessions so I checked there and I have desktop files for both. currently I'm using WDM and it's working fine.
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Feb 9, 2010
Where is sessions in 9.10? How do i get it, Is it called something different.
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Oct 17, 2010
I have Lucid Lynx 10.04 installed on my eee 900ha and I'm unable to log in to my desktop.
Earlier today I logged in successfully and I uninstalled a couple of unused programs (pitivi, evolution, fspot, and another that I can't remember). I then shut down the computer. Later when I booted the computer back up, I was greeted with the usual ubuntu login screen but I noticed that there were no options in the sessions drop-up menu. I entered my login information and pressed enter, and the screen went black, then went back to the login screen again.
I'm using gnome.
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Feb 15, 2010
How to encrypt the sessions in red hat 4.2.
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Feb 28, 2010
i have a problem in my /etc/X11/gdm i found the folders for the settings on gdm. the Init/ folder is there and inside it was the PreSession/ and PostSession/ folder which is correct based on this:
Code:
Init/
PostSession/
PreSession/
Sessions/
source found in [URL] but i dont have the Sessions folder. right now i trying to install a login screen which i downloaded from the [URL]
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Jan 18, 2011
I have two Debian boxes, A and B. I would like that a window (for example vlc, or whatever) displays on both A and B. The process (i.e., the X11 client) runs on A. If I interact with the window from box A, it should affect the window on box B. And, if I interact with the window from box B, it should affect the window on box A.
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Feb 20, 2009
I can't seem to get F-10 to save my desktop session..I panel several workspace screens with apps, tools..Then, I pull down: System -> Preferences -> Personal -> Sessions and tab into: Options, and select:: "Automatically remember running Applications when logging out.For the Startup Programs, everything in that list is checked on.I logoff via System -> Shutdown, and come back sometime later, all the Workspaces are totally EMPTY
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