Debian Configuration :: Server Is Not Visible?
Sep 16, 2010
I have ssh and http server running on a linux box.The interface is DHCP configured, using dyndns.org to register its assigned IP, my ADSL modem does not do routing.When i reboot the system none of the servers are visible from the outside...Recently i got a hint to add "ping google.com" to cron run every 5mins. With this hack the servers become visible, and i can see/connect from the outside; - but for obvious reasons ont like this solution.Anyone is able to shed some light why the server needs to do outgoing tarffic to become visible?
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Sep 3, 2010
Everything default.Everything works nicely with one exception. I can't connect to MySQL from the network.nmapping localhost tells me 3306 is open but nmap from the outside shows only ports 22 and 111 open. To my knowledge I have no firewall, iptables -L gives an empty set.I have several similar installations on the same network without any problems of this nature.
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Apr 5, 2010
I am *finally* getting around to rebuilding my file-sharing computer. I'll be sharing files with both Linux and Windoze machines. It's a home network, so there's nothing fancy needed. I know I have to tweak my smb.conf file until I'm satisfied with the features and security. I'm using SWAT and I'm starting with a bare-bones conf file. It's not secure but I can see the server and selected files/directories from my other Linux box.
My really dumb question is, do I have to reboot both the server and the client machines every time I change the SAMBA configuration? I thought I just had to stop and restart the SAMBA service in the SWAT software - but then the server disappears from my client. It looks like I need to reboot both machines for the client to see the server.
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Jan 25, 2011
I will be relocating to a permanent residence sometime in the next year or two. I've recently begun thinking about the best way to implement a home-based network. It occurred to me that the most elegant solution might be the use of VM technology to eliminate as much hardware and wiring as possible.My thinking is this: Install a multi-core system and configure it to run several VMs, one each for a firewall, a caching proxy server, a mail server, a web server. Additionally, I would like to run 2-4 VMs as remote (RDP)workstations, using diskless workstations to boot the VMs over powerline ethernet.The latest powerline technology (available later this year) will allow multiple devices on a residential circuit operating at near gigabit speed, just like legacy wired networks.
In theory, the above would allow me to consolidate everything but the disklessworkstations on a single server and eliminate all wired (and wireless) connections except the broadband connection to the Internet and the cabling to the nearest power outlets. It appears technically possible, but I'm not sure about the various virtual connections among VMs. In theory, each VM should be able to communicate with the other as if it was on the same network via the server data bus, but what about setting up firewall zones? Any internal I/O bandwidth bottlenecks? Any other potential "gotchas", caveats, issues? (Other than the obvious requirement of having enough CPU and RAM).Any thoughts or observations welcome, especially if they are from real world experience in a VM environment. BTW--in case you're wondering why I'm posting here, it's because I run Debian on all my workstations/servers (running VirtualBox as a VM for Windows XP on one workstation).
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Jun 26, 2010
I'm running the current release of Debian with the 2.6.26-2 kernel. This is an upgrade from an older (2.4 kernel) series redhat release. One of the things I had working in the older system was a dns server with accompanying monthly update of the root hints file. I tried working through a dns how-to to set this up again, but it seems much has moved around since I last played with this. All of the files listed in the how-to are not where it says they should be. I am looking for a better reference on keeping the dns server running with current server information.
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May 3, 2011
I have installed nfs-kernel-server on the server and nfs-common on the client. Assumeserver 192.168.1.1client 192.168.1.3
content of /etc/exports is:
/home 192.168.1.0/255.255.255.0(rw,sync,no_root_squash)
/home/nfsroot 192.168.1.0/255.255.255.0(rw,no_subtree_check,async,no_root_squash)
[code]....
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Jun 14, 2011
I wanted to setup my server as a router/gateway just for educational purposes and also when it succeeded i will keep the gateway and place it on the front line right after my modem.
My current setup as it is now :
The GATEWAY/ROUTER will be doing the main work to act as a dhcp server and firewall.
Now my setup as it is now :
So now what i ment to do was :
Let the clients connect to the gateway via ETH1 and all the stuff being router to ETH0 which is the NIC that is connected to the internet.
But now i have two huge problems :
1. The DHCP configuration seems to be fine the client machines get their ip adresses and /etc/resolve.conf looks fine to. But somehow the GATEWAY/ROUTER wont let me use the specified external DNs server so i cant do anything on these machines.
2. The firewall script [url] at line 27 should be DROP but if i use this line of code the GATEWAY/ROUTER cannot use his dns server settings so when i try to browse the internet or ping a machine outside my local network it would came up with nothing.
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May 3, 2011
I've been searching around the internet for the last two days trying to solve this problem, because I know how much everyone hates people who ask questions without looking first. Alas, I haven't found anything.
I have Ubuntu Server 11.04 running on a spare machine, which I've configured and got running just fine. I am trying to set up an IRC server on this machine for some friends of mine using UnrealIRCd. I have built and configured the server program, and am able to run it. Anyone who is connected to my home router (wirelessly or hard-wired) can connect to the server while it is up using either the internal IP, external (router) IP, or the dyndns.org name which is tied to the external IP.
However, anyone outside my home network cannot connect to the server. I DO have ports 6660-6669 forwarded on my router (IRC standard port is 6667). When connected to an external network, I cannot join the server by using the external IP, nor the DNS name.
I also have OpenSSH set up on the server machine, and have port 22 forwarded on my router. I CAN ssh into my server machine from within my home network, and I CAN ssh into my server machine from an external network.
Strangely, I can successfully ping my DNS name from inside my network, but not from outside. This doesn't make sense to me considering I am able to successfully ssh into the machine.
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Feb 5, 2010
i installed elastix on a server with a real or static ip address
i can access elastix webased system from inside my lan but i cannot do that from outside (i mean when i try to manage it from another place)
i also use D-Link DSL 2640T with a disabled firewall
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Feb 14, 2011
I am trying to replace an existing ubuntu installation with the current debian testing release. But when it comes to select partitions to install on none of the existing partitions is visible. I only see my SATA hard drive empty. The existing installation of Windows is still bootable and fdisk as well as cfdisk correctly recognize the partition table while parted (which I assume is used by the installation process; all tools run from a live cd) is not:
[root@localhost liveuser]# cfdisk /dev/sda
cfdisk (util-linux-ng 2.18)
Disk Drive: /dev/sda
Size: 160041885696 bytes, 160.0 GB
Heads: 255Sectors per Track: 63Cylinders: 19457 .....
[root@localhost liveuser]# parted /dev/sda unit s print
Error: Can't have overlapping partitions.
I am not sure what parted's error message means. I can hardly imagine that it complains about the logical partitions with in the extended one. The reasons for the trouble might come frome the fact that sda4 is marked as primary partition (see cfdisk output). If this is the case, how can I repair this?
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Apr 18, 2015
I have a laptop running Debian stable. I have used xfce for a long time, but in an attempt to get away from needing to haul a mouse everywhere, I decided to migrate to xmonad (raw, with no DE), a tiling window manager that is extremely keyboard-friendly. I've also switched to conkeror (not konqueror, mind you), a very keyboard-friendly firefox-based browser. I have completely eliminated my need for a mouse on this laptop and have even disabled the touchpad by blacklisting the psmouse driver. There is still an annoying visible cursor sitting in the middle of the screen upon starting X. Is there anyway to (probably in the X config files) disable the visible cursor, or if not, have its default starting location be the bottom right corner (where it's least visible)?
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Jul 20, 2015
Debian Jessie on a raspberry pi 2
I'm trying to get nfs server working at boot up and it isn't starting because it says portmapper isn't running. I've read through a bunch of documentation on this and have gotten to the point that if the documentation tells me to Code: Select all$ apt-get install nfs-kernel-server portmap I usually stop there as it is outdated. I cant find a process doc that utilizes rpcbind. So, here is what I've done on my own:
setup /etc/exports with a proper nfs dir and exportfs it
Code: Select all$ apt-get install nfs-common nfs-kernel-server
$ sysv-rc-conf
---│ nfs-kerne$ [ ] [X] [X] [X] [X] [ ] [ ] [ ] │
---│ rpcbind [ ] [X] [X] [X] [X] [ ] [ ] [ ] │
$ service rpcbind start
[Code] ....
The errors however don't seem critical as I'm able to mount the exported directory. OK so it appears to me that nfs server is working. However through a boot, the nfs-kernel-server and the rpcbind services are not starting. The nfs-kernel-server didn't start because rpcbind wasn't running. So I start rpcbind and then nfs-kernel-server and then nfs server works. So what am I missing? Why will rpcbind not start at boot?
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Nov 14, 2015
I'm having a lot of difficulty trying to use tab completion while working in my FTP server from a terminal.I access this server with other Linux distros and OSX and the completion works fine. I've tried changing a lot of Debian config, but it seems to only affect the completion within the local scope.
Tab completion does work for system related tasks, no problem.
System:
Debian 8.2/Kernel 3.16.0-4-amd64
FTP Server:
Trendnet TS-I300 NAS with FTP/upnp
Settings:
Enabled in bashrc:
Code: Select allif ! shopt -oq posix; then
if [ -f /usr/share/bash-completion/bash_completion ]; then
. /usr/share/bash-completion/bash_completion
elif [ -f /etc/bash_completion ]; then
. /etc/bash_completion
fi
fi
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Jun 13, 2010
I tryed to install a DNS server on debian lenny, i installed bind9 and webmin, and then i installed a bind module for webmin. I created a domain with webmin but when i tryed to add a address record with it i had a Error-Missing Content-Type Header.
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Nov 26, 2010
I have since a couple of days a vps. I discovered that there's is no nameserver is running.
# host google.com
Nameserver not running
google.com A record not found, try again
Also there's no resolv.config in /etc/. I re-installed the OS several times without any changes. I ask my host about this but he has not answered my questions.
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Dec 27, 2010
I'm trying to get my simple home web server on the internet but I cannot seem to make it work. I've set up a LAMP stack to host my website and it works perfectly on my local network (accessing from [URL].. but not from the internet. To test it for now before I set up a dynamic dns service, I am trying to access my website via my WAN IP address from within and outside of my home network (ie http://69. When I do this, I get a "taking too long to respond" message, instead of a host not found or 404 or something of that nature. My box has a pentium 4, 2 gigs of ram, and is on a DSL line so I have a hard time believing anything is "taking too long". Here are the software packages I've installed:
-ssh
-apache2
-php5
-mysql
-phpmyadmin
-proftpd
-mediatomb
All of these packages work perfectly fine from within my home LAN, but NONE work outside of my network.
Other configs:
-My router forwards traffic on port 80 to my server
-My iptables allow incoming traffic on port 80
-My ISP, AT&T, does not block port 80 (or any port, according to various online sources)
Perhaps Apache is not configured correctly? What apache config options would be related to this problem?
I've previously tried a similar setup with the dyndns service fully configured (I followed a very thorough guide down to the t - wish I had the link it was excellent), but to no avail - I got the same "too long to respond" accessing from my domain name. I understand that there are a multitude of causes for this problem, so what can I do to narrow down the source? "How to set up a LAMP server" guide, because all of them have lead me to where I am now.
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May 25, 2011
Let me start by saying its a school assignment, and therefore not a real world situation. Nevertheless, I would appreciate any help I can get.The company ProvidIT has contacted us, their website has been hacked. Instead of their normal website, it shows Buy creditcard details online, click here (cc4u.jpg). A classical defacement.The following offenses also might have been committed. So its our job to find evidence for those offences.(I had to translate the Dutch law articles, so they might not be 100% acurate legally speaking, but you get the idea)
- Unlawfully accessing automated systems
- Copy or tap (eavesdrop) data after hacking
- Unlawfully access or use system resources of a 3rd party computer
[code]....
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Jun 18, 2011
I have a strange problem. I have set up a server to run without a keyboard, mouse, or video. If I boot it connected to a monitor, there is no issue. However, if I boot it without a monitor attached, the CPU just runs at 100%. Below is a shot of my HTOP from the machine: The weird part is that if you sort the processes by CPU%, they don't actually total 100%. I was trying to see what was pushing the CPU so high, but most of the time the running processes only total between 5 and 20%. Has anyone else seen the problem? Any idea what's happening? I'm worried that if I leave it running like that, the processor could burn up. My temporary work around is to boot it up with a monitor, then disconnect the monitor, but that's really inconvenient.
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Jan 6, 2010
I have a mail server running ubuntu 9.04 w/ the default setup (for the most part): Postfix + Dovecot + SSL. I generally use Ubuntu 9.10 as the client machine running evolution. I have a myriad of subfolders to the inbox on the server that I created in Evolution. Occassionally I do connect using another machine and use IMAP. In one instance I use the Windows 7 I have on the same machine (dual boot) and access the server. Most of the server's sub-folders are not visible but many are.
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May 4, 2009
am new to this Linux world and a full time windows user. Now planning for a switch over and installed Debian into my PC as a parallel OS with windows.However, am facing the following problems after installing the os.
1. The menu bar is not visible, nor the application bar. I use Gnome and have attached a screen shot of what I see when logged in.
2. I am not able to play any movie files as it says that there are no drivers for that.
3. I do not see anything through which I can see the applications installed.
4. I am not able to access any drives of windows through this. It says access denied.
5. How do I log in as a root user?
I have used Puppy Linux before this and it was simplistic.
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May 20, 2010
I have a problem after installing Debian and running it on my machine. Instead of taking me to a splash login screen, it instead remains a black screen like a console where I type in my username and password, and it remains in this black command line mode beginning ben@ben-desktop:~$. Like it does in a terminal. What can I do to resolve this? This is completely new to me and hasn't happened to me in Ubuntu or Mint. I am familiar with using the terminal for the odd task but obviously I can't use it like this without a visible desktop.
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Jun 20, 2015
Debian 8.1
Kernel 3.2.0
xfce4
I own a secondary SATA disk I used without problems. In the last days I updated to 8.1 and after that I was not able to read the disk. The fdisk -l command has the output:
Code: Select allDevice Boot Start End Sectors Size Id Type
/dev/sdc1 * 63 117194174 117194112 55,9G 7 HPFS/NTFS/exFAT
Disk /dev/sdb: 37,3 GiB, 40020664320 bytes, 78165360 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00087e23
The disk is mounted on:
Code: Select all/dev/sdc1 on /media/stefano/MobileSata type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096,uhelper=udisks2)
When i access to the disk, i always have the error:
Code: Select allstefano@GhilbaDebian:~$ ls -l /media/stefano/MobileSata
ls: impossibile to access to /media/stefano/MobileSata: input/output error
In the dmesg there is no particular message.
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Jul 6, 2015
I have a rented vserver running at Strato [URL]. It came preinstalled with Debian 7. I upgraded it to Debian 8, what seemed to run fine, all services running. The problems came up when I tried to reboot the server to test the init system. It just does not come up, I cannot ping it, nothing. I can boot into the rescue system, mount the system partitions and chroot in to the filesystem. In this state I also can run my services, including apache2 and mysql. In the syslog I find nothing about the reboot. Now I need to reboot ino the normal system. I already tried to resume to sysvinit without success.
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Feb 15, 2010
I need to monitor resource of my server. I have found munin and sysstat, Does munin use systat? or they are different package?because in some documents I have found on net,for installing munin, systat is needed !!for example on RedHat based distor, sysstat package is needed! but on debian is not needed!
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Mar 15, 2010
I downloaded the most recent version of debian and isntalled it. Everything went really well there. Until i issued free -m on the box. It would appear that the server is missing about 300mb of ram which is okay for i figured perhaps the video card / sound was taking that amount of ram for it'self. it was not until i installed Xen and I found a bigger problem with memory and my system. for what ever reason when I attempt to create a domU with 512mb of ram, i need to add 19MB more ram so that when i issue free -m from within the domU it will show a total of 512. worse yet is that when i raise the total up to 1024 for 1gb or domU ram, i need to addd 28mb or ram. and add 28mb of ram PER GB i wish to add to the domU.
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May 7, 2010
My question is rather simple, but i couldn`t find any answer yet i have a debian box connected to the internet through an ad-hoc wireless connection with a win7 box.Could I run a http server on the linux box and access it from the "outside" somehow, since my linux box has a "private network" type IP, ie: 192.168.137.12 ?
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Jul 15, 2010
So I'm running proftpd on an old machine just for my own backup purposes, but I'm running out of space. I was wondering if it would be safe/efficent to set up an additional USB hard drive to the LVM drive that I have now? As in, would it write quick enough (USB 2.0), read quick enough and not corrupt data?
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Aug 24, 2010
I have four server :
- the first of them is the router (firewall, htb, squid, etc.)
- the second have installed apache2
- the third sql
- and the last one is LTSP server for 40 client.
When the ThinClient connect to the LTSP server ewerything works good, but i can't see all of them on squid access log. Isee one ip address (LTSP server), but i want to see 40 ip adrresses. The same situation is in htb. It's doesn't work on the thin client. Is there any way to get this work that how i want ?
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Sep 28, 2010
I'm trying to install nfs-kernel-server on my squeeze and have strange error.
Here the console output:
The following NEW packages will be installed:
I tried to google for this errors and find that manually restarting nfs-common, portmap should help but no luck.
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Oct 13, 2010
I'm having problems when trying to view my web site from inside my firewall and router. The web server works fine and will resolve from IP address on the local network and port forwarding works for external connections. The problem stems from when I orignally setup the server; I left the domain name field blank when going through the installation process.
I've had a look at the man pages and had a search on Google but cannot find an answer that works. I've changed a few things in '/etc/hosts' and '/etc/networks' but when I make changes they have no effect on the problem. My web site is on a no-ip domain which is [URL]..
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