Red Hat / Fedora :: Finding The Maximum Limit Of Connections FTP Server?
Jul 1, 2010tell me the maximum limit of connections FTP server
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Server :: Limit The SSH Connections?
Jul 14, 2011Is it possible to do limit the SSH connections using IPTABLES, like per day minimum 10 times only ssh connections can allow like that, or any other way to limit the SSH connections.
View 1 Replies View RelatedFedora :: Thunderbird 3.1.10 X64 - You May Have Exceeded You Maximum Connections
May 3, 2010I upgraded to FC15 in early june, come June 15 Thunderbird suddenly ceases to send or receive any email. It pops up with the message "You may have exceeded you maximum connections" and I've tried changing the cache connection count to 1 instead of the default 5 and every OTHER post about that error suggests to no avail. Funny thing, my primary desktop is still on FC13, same thunderbird version, arch and account setup (with SSL enabled) and works flawlessly. Even with -safe-mode enabled it doesn't work. My lightning calendar also doesn't sync since then.
I have found that if I turn SSL off IMAP works again, SSL SMTP still fails. If I turn SMTP SSL off it sends mail. The calendar is an https (SSL) link. Obviously the issue is SSL and Thunderbird in FC15. There are no errors/messages in the console, maillog or the in-built error console.I will NOT use mail without SSL as I may occasionally use unencrypted WiFi.
Server :: Limit Number Of Simultaneous Connections From Any Given IP Addrss Every 5mins Say
Jul 28, 2010except is there is a way to enhance mod_limitipconn.c to ensure that apart from restricting one connection allowed from a given IP, also set so that an IP can only connect on every set interval ?e.g.restrict the number of connections from a given source IP to say once every 5 minutes or so?if not mod_limitipconn.c, any other mechanism to do the expected result?
View 2 Replies View RelatedFedora Networking :: Limit Outbound TCP Connections To Single IP?
Oct 19, 2009I'm having a problem that seems to plague a lot of people judging from my research on the web. I have a hosting provider that limits the number of incoming connections to the shared host to 50 per IP.
I have a single IP for outbound connections and I use Squid as a proxy server.
Lately I've tripped across the 50 connection limit frequently - and that's with only 1 user. It seems the problem is related to the performance you can get out of a desktop these days. Its not impossible to have several browsers open with several connections to different sites on the same server - and boom - locked out!
So it occurred to me that there must be some way to limit the number of outbound connections in the kernel - but I've not found it. I did find that Microsoft had been limiting the number of outbound connections in XP to 10 to address the virus problem, and I've found countless hosting complaints and dialog on the subject with no easy solution.
So my question is simply, does anyone know how to limit the number of OUTBOUND connections to a single IP in the kernel?
Fedora :: User Memory Allocation - Set A Maximum Limit On The Amount Of Ram A User Can Utilize?
Jul 24, 2009I have a few multi-user servers in an academic laboratory. I am having a problem with some users maxing out the available RAM, causing such sever slowdowns the machine essentially crashes. My servers are Dell Power Edge's running Ubuntu 8.10 Server Edition (Not my choice). I would like to set a maximum limit on the amount of ram a user can utilize. This morning I experimented with setting limits via /etc/security/limits.conf and using ulimit. Neither of them prevented my test program, a simple infinite loop of mallocs, from crashing the server.
View 7 Replies View RelatedSlackware :: Limit For Maximum Amount Of Locked Memory?
May 9, 2011When I run ardour sound editing I get this message , but it starts ok Your system has a limit for maximum amount of locked memory! This might cause Ardour to run out of memory before your system runs out of memory. You can view the memory limit with 'ulimit -l', and it is normally controlled by /etc/security/limits.conf
bash-4.1$ ulimit -l
64
my limits.conf is like this
audio - rtprio 99
@audio - memlock 250000
[Code]...
Server :: Apache Virtual Host To Limit The Concurrent Connections Of Virtual Hosts?
Jul 3, 2009apache virtual host to limit the concurrent connections of virtual hosts? Taking into account the host of each virtual user's home directory can also have more than one subdirectory, which should be restricted to a subdirectory. Is beyond the control of the operation of these sites in a subdirectory. Best local restrictions or limitations to the overall situation.
View 1 Replies View RelatedUbuntu Servers :: Maximum Of 1024 File Descriptor Limit?
May 4, 2011I'm running nginx for static files and as a proxy server for a comet IM server on ubuntu Jaunty. On high load I'm hitting a limit of 1024 file descriptors. I've tried increasing this limit but still can't pass 1024. Does "more /proc/sys/fs/file-nr" gives me the global count of used file descriptors? Why do I see a maximum of 1024 open file descriptors in /proc/sys/fs/file-nr if this is the global count for the machine and each user should have at least 1024 allowed file descriptors by default? Is there a way to increase the limit while the server is running?
Some relevant info on my server:
sudo more /proc/sys/fs/file-nr
1024038001
sudo sysctl fs.file-max
fs.file-max = 38001
sudo nano /etc/security/limits.conf
...
* hard nofile 30000
* soft nofile 30000
I also added this to /usr/local/nginx/conf/nginx.conf:
worker_rlimit_nofile 10240;
Uncommented the following line in /etc/pam.d/su:
session required pam_limits.so
Security :: Limit The Number Of Ssh Connections?
Dec 13, 2010Dist: Fedora 14
SSHD: OpenSSH 5.5p1
I need to limit the number of ssh connections a user has. All the users are using tunnel only so their shell is set to /sbin/nologin The logins do not open a shell they just create the tunnel so /etc/security/limits.conf has no effect on them at all.
I tried setting 'MaxSessions 1' in sshd_config but either that doesn't not do what I expect it to or it plain does not work as even with a normal user I was able to open an unlimited number of sessions. I need a good secure way to limit each user to 1 ssh session without them having a shell but Im unable to find a solution.
Hardware :: Finding The Maximum Supported Resolution Of Video Card By Using Xrandr?
Aug 25, 2010I am trying to find the maximum supported resolution of my video card by using xrandr. My card is an NVidia GeForce Go 7300 (in a laptop). The official documentation does not list specific resolutions that are supported. My laptop display is detected as "AUO" in the NVidia X Server Settings dialog (Ubuntu 10.04 amd64) and has a native resolution of 1280x800. However, I would like to know what is the maximum resolution that I could use on a display with the VGA adapter irrespective of whether the laptop's display is on. This is what I get from xrandr: Screen 0: minimum 512 x 384, current 1280 x 800, maximum 2304 x 864 default connected 1280x800+0+0 0mm x 0mm
1280x800 50.0* 51.0 56.0 52.0
1024x768 52.0 50.0
[code]....
I am guessing the maximum width of 2304 would be for using TwinView with the laptop's 1280-width display next to a 1024 CRT or similar. Surely these cannot be the only supported resolutions. I would like to use a LCD display of width somewhere around 1600 pixels (in particular while turning off the laptop's screen so as to use the external LCD as the primary display) if possible.
Security :: Limit Number Of Connections For Single Ip On Port 80 To CentOS 5.5
Sep 5, 2010How to number of connections for a single ip on port 80 to CentOS 5.5 with iptables? connlimit did not work on CentOS and nginx does not provide a module for that
View 4 Replies View RelatedProgramming :: Finding Maximum Length File In A Directory Recursively Using Shell Scripting?
Nov 8, 2010I want to find maximum length file in a given directory. It should search recursivley. I want this to be done using ls and simple looping constructs.
View 6 Replies View RelatedServer :: Limit The Suphp User Memory Limit?
May 12, 2010I have a VPS server with 512 MB memory. The php.ini is set so script memory limit = 16 MB. However, I have noticed in my top report, instances like the following:
Quote:
5484 coldclim 25 0 46476 32m 5920 R 0.0 6.4 0:00.93 php
The bold number of 6.4 is the % of sever memory this process is using. 6.4 % of 512 MB of memory is about 32 MB of memory, so it appears that this isn't being limited by php.ini. Am I correct? This leads to the next question: Is there some way to limit the amount of memory a single suphp process can use? (Basically, something like the setting in php.ini which limits suphp processes in the same way.)
Networking :: Finding The PPTP Active Connections?
Sep 29, 2009I've created VPN server(PoPToP version 1.3.3) using webmin and all clients are connected successfully. I want to check "current active connections" from CLI(command line interface). what is the command to list all active connections.
View 1 Replies View RelatedUbuntu Security :: Finding Connections On Ports Despite Ufw Rules?
May 2, 2010my ufw rules have been loaded and active yet using iptraf i see tcp connections on ports that were never allowed by ufw. can anyone explain this too me does ufw just not work?
View 6 Replies View RelatedFedora Installation :: Network Connections Is Inactive - Cannot Set Internet Connections
May 30, 2011I recently installed Fedora 15 now, and during installation I set the internet connection manually, then did update and after reboot, the internet connection settings have been removed. Now I can not set because the network connection to the Internet Connection is inactive. I mention that before the update was functional internet connection.
View 5 Replies View RelatedFedora Networking :: Two Internet Connections On F10 Server?
Feb 25, 2009I have a question, regarding the use of two internet connection on the same server. So, the thing is like this: The server will have 3 network adapters: connected to a DSL modem (on this adapter I have one of the internet connections, a PPPoE connection. It's only purpose is to share the internet connection to all LAN users using SNAT.
eth1 ----> the other internet connection, a much more expensive one actually, used for hosting a website, a domain name server, and a qmail server. eth2 ----> LAN connection So what I want is to make eth1 the "default gateway" (for outgoing mail, DNS requests, etc) and, as I said, use the ppp0 connection on eth0 only for internet sharing in LAN.
My question is (since I'l configure this server in about one week), does anybody have any suggestions regarding how could I accomplish this? I mean, I'm affraid that ppp0 will also try to use the default gateway from the other internet connection and vice-versa. Now, I know I can use the ip route/ip rule commands, but for many reasons I'd like to keep it simple and not use them.
Networking :: Binding 2 Internet Connections On Same Fedora Server
Apr 11, 2009Can I bind 2 interent connections or more on same fedora server to create bigger one with double bandwidth ,or it needs a specific router to be able to do this.
View 1 Replies View RelatedFedora :: Firefox Can Not Connect To Anything - 'proxy Server Refusing Connections'
May 11, 2011I use Fedora 14 and Firefox as my web browser. I use Astrill VPN service. I have the following persistent problem: I start my computer. Astrill is not set to start on boot. I start Firefox. Firefox can not connect to anything, it says 'proxy server refusing connections'. I go to Edit>Preferences>Advanced>Network>Settings I click the radio button 'no proxy'. The problem remains. I am completely unable to connect to the net. Even on reboot, I cannot connect. On reboot, Firefox is set to use a proxy, although it was not on shutdown. Some init script is setting this. My normal connection is often faster than through Astrill, so I only really need to use it when I want to get at a website that is blocked by the govt here in China.
where Firefox is being told to use a proxy, and how to reset it to not use a proxy, assuming Astrill is not active. There must be something left in a .conf file somewhere which is overriding the settings in Edit>Preferences. Because, if I set it now to 'no proxy', I cannot connect to the net.
Ubuntu :: 2 Pptp Vpn Connections - When I Dial One Of My Vpn Connections, My Other Vpn Connections Be Disabled?
Feb 7, 2011have a problem with my network-manager in ubuntu 10.10.when I dial one of my vpn connections, my other vpn connections be disabled and I can't use them!I tried to restart network-manager and gnome-panel, but it does't seem to solve this problem.
View 1 Replies View RelatedServer :: Loopback Device - Maximum Size
Sep 24, 2010This seems like a relatively simple question, but the answer seems to elude everyone: What is the MAXIMUM SIZE of a Linux loopback device (not counting any specific filesystem limitations)? Is it the maximum size of a linux block device?
View 4 Replies View RelatedServer :: Maximum LVM2 Logical Volumes ?
Sep 15, 2010Are there any maximum amount of logical volumes a LVM2 volume group can contain?
View 1 Replies View RelatedServer :: Maximum Number Of Hard Links?
Dec 8, 2010I have a 32-bit Linux server with an ext3 file system. Is there any kind of upper-limit to the number of hard links I am allowed to use? (Per inode...? Per directory...? Per filesystem...?) And (just out of curiosity) would this be any different if I had a 64-bit machine or a different file system?
View 1 Replies View RelatedSoftware :: Pam_limits(sudo:session): Wrong Limit Value 'unlimited' For Limit Type 'soft'
Dec 28, 2010my secure log is flooding with these messages..
sudo: pam_limits(sudo:session): wrong limit value 'unlimited' for limit type 'hard'
Dec 28 22:42:29 yn54 sudo: pam_limits(sudo:session): wrong limit value 'unlimited' for limit type 'soft'
Dec 28 22:42:29 yn54 sudo: pam_limits(sudo:session): wrong limit value 'unlimited' for limit type 'hard'
Server :: Setting Up Harddrives On Fileserver For Maximum R/w Speed
Mar 19, 2010I am currently in process of remodeling my home file server and would like some advice. The server has two internal hard drives that are rather small (10-15G) and I've now ordered a larger 2 TB drive which for the time being will have to run as an external drive through USB 1 (going to be rather slow).
I'm probably going to put the OS and swap on one of the internal drives but I was wondering if there was a good option for increasing the system's performance by making the second internal drive act as a kind of buffer for the 2TB usb drive. I'd like both the advantages of the large size of the USB drive and the fast read/write speed of the internal drive. Would it be possible to put it together so all reads and writes to the fileserver would first go to the fast internal drive (or even better, to internal drive and USB drive at once, although I suppose RAID is not an option with USB attached storage), and would then be put to the large drive. It would also be nice if the most used files from the large USB drive would be cached on the internal drive for fast read speed. I understood that ZFS would help me accomplish something the like but as I understand, it's not that easily available on Linux.
The current plan is to make the large drive a simple XFS drive and build a small daemon on the server that would simply move all new files from the internal drive to the USB one, once they are not used but it would be nice to have a more low level solution.
Server :: 32bit Tomcat On 64bit RHEL - Maximum Heapsize?
Jul 20, 2011I have running 32bit Tomcat on 64bit Redhat machine. What is the maximum Xms Heapsize for 32bit applikation working in 64bit environment. Code: -Xms2048M -Xmx3300M Today I saw that my Tomcat swapping. Seems to bee problem with memory.
View 1 Replies View RelatedCentOS 5 Server :: What Is The Maximum Number Of Logical Volumes In A Volume Group
May 15, 2009what the maximum number of logical volumes is for a volume group in LVM ? Is there any known performance hit for creating a large number of small logical volumes vs a small number of large volumes ?
View 1 Replies View RelatedFedora :: Maximum Amount Of Ram A 32bit OS?
Feb 14, 2009I will be upgrading my RAM soon. What is the maximum amount of ram a 32bit OS can see?
View 14 Replies View RelatedFedora :: Maximum Settings But Low Sound In F12
Apr 6, 2010I hava a ASUS P5GC-MX/1333 and I want to install the driver from my Realtek audio, because, in windows 7 the volume is very loud, but in fedora even in the maximum is very low.
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