Ubuntu Servers :: Snmp Not Allowing Outside Query
Aug 11, 2010
our 9.x servers are running perfect. Just setup 5 new webservers, running 10.04LTS. Have SNMPD running, installed and the same config for all the servers I just copied over, by config, I mean one line, that's it. So the servers have the following /etc/snmp/snmpd.conf file rocommunity public
That's it. Now the only difference is looking at the ps on the local box's, a working one shows;
snmp 1096 0.0 0.0 50480 3756 ? S Jul02 9:21 /usr/sbin/snmpd -Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid
where this one shows
snmp 4962 0.3 0.0 48540 5884 ? S 22:26 0:04 /usr/sbin/snmpd -Lsd -Lf /dev/null -u snmp -g snmp -I -smux -p /var/run/snmpd.pid 127.0.0.1
Notice (I did flag it red) the local 127.0.0.1, but that co-incides with my
[Code]....
It almost seems something firewall is blocking, apparmor is not running, is there something else out of the box 10.04 has that I am just completly brain farting on?
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Feb 22, 2010
I have 2 Centos 5.2 install that cant be snmp queried from another machine and I am unsure of what to check next.
To make sure it was not an incorrect iptables rule i temporarily turned off iptabes with the same results. I have checked the hosts file and it is correct on both machines.
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Jan 9, 2010
I want to set up my laptop to allow connections to certain users with passwords from anywhere over the internet via SSH but I'm unsure about how I would go about doing this. I only thought it would be the case of setting up the open-ssh server on the laptop then, using my external IP and PuTTY on another PC outside of the network, connect to the external IP through port 22 so I tried this and wait 3 or 4 minutes or so and it says the connection times out.
I have also configured my router to use port forwarding but this doesn't seem to help much either and I have LAMP setup to allow connections to external IP : 80. The only thing I am able to do is access the laptop through the local network by using its internal IP's like 127.198.0.1:22 or something. I was wondering if anybody knows if and could tell me how I would do this as I really want to be able to access my home computer/laptop from my work sometimes, especially if I have work at home which is not with me at work or something.
I know this is possible but I'm quite new to this type of thing and don't know what is going wrong. Have I missed something or do I need to change any .conf files or anything?
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Apr 19, 2010
I have proftpd setup on my Aspire Revo (which I'm using as an HTPC) so that I can download files to my mac when I feel like watching in bed or whatever. I recently purchased a 1TB WD Elements to store my media. I have proftpd setup so that I can access every file on the computer. However, when I try to gain access to the Elements HD, I get an FTP error from Cyberduck that says:
/media/Elements: no such file or directory
Note that I have not formatted the drive or anything - just set it up straight out of the box. My media is loaded on to it, and XBMC reads the files fine. Is there a way I can enable the hard drive (or the OS) to share these files over FTP, or is this not possible?
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May 11, 2010
Howcome mysql by default is only allowing connections from localhost? I want to access it remotely from another account (not root).
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May 9, 2011
I have a asterisk server running on my ubuntu 10.10 server box. I also have a zabbix server monitoring my networks. Asterisk have the possibility to show very interesting statistic with SNMP. But I cannot managed to set it up. This is the result i get when I try to get the version information with snmpwalk:
[Code]...
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Aug 12, 2010
I'm trying to configure SNMP service to send traps to SNMP server. I've installed net-snmp-utils, now I need to configure the "snmpd.conf" file...
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May 17, 2011
Very new to Ubuntu and Linux so this may be a simple one. I've recently setup an Ubuntu Server 10.04 box as a mail relay running Postfix and Amavisd-new (Spamassassin & ClamAV) and this has been working really well. I started to get a few emails through today with the following header[URL]..(removed domain name) The name's always in quotes and random. The fqdn is that which I configured in postfix as $myhostname. I can't figure out how this address is being used. This box is only used for incoming mail and acts as a relay to Exchange. Exchange doesn't send out through it. The only thing that may be going outwards is bounced messages from Exchange which are almost exclusively to linkedin.
The fqdn isn't public. This box isn't even part of our internal domain, it's just named that way with manual DNS added. Anyone seen this before? Will this header have been part of the message when it arrives at postfix or could this have been added by postfix itself?
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Jan 22, 2010
finnaly i can run my ubuntu server 9.04 well, thnx to this great member of ubuntuforums.org now, i wanna i wannna install SNMP on my system, but after i do that, when i wanna connect with another client, it give me error like this :
Code:
no response received
SNMPv1_Session (remote host: "10.100.7.179" [10.100.7.179].161)
community: "public"
request ID: 862383236
PDU bufsize: 8000 bytes
[Code]...
10.100.7.179 is my client, i allready install snmp agent on it. but why still eror then? plz give some help. thnx before
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Aug 8, 2011
I m able to do the changes in the home directory of the users' but when it comes to the /var/www/html folder, it's not allowing to do any changes/create the files or folders
I m able to view the files and it's contents
Global Settings:
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May 5, 2010
I have a small problem with lmsensors and snmp since I upgraded my small server from 9.10 to 10.04. I use cacti to monitor my servers usage, disk space as well as temps and fans.
This was running very fine before the upgrade, but now I don't get data anymore from lmsensors. It seems that SNMP doesn't give this information as before. (Cacti log says: "No sensor data was returned from SNMP")
sensors give the following output:
Code:
w83627dhg-isa-0290
Adapter: ISA adapter
Vcore: +1.12 V (min = +0.00 V, max = +1.74 V)
AVCC: +3.41 V (min = +2.98 V, max = +3.63 V)
[code]....
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Dec 30, 2010
I have a ClarkConnect (CentOS based) box running as my home router on a RR connection. I had the DNS servers set up to use Google's DNS server. I want to change them back to the local DNS servers but I can't find an obvious/easy way to get those address short of a) reconfiguring the router's network to DHCP them (would rather not interrupt everyone) or b) calling their tech support (kill me now!). Is there a command line tool/command I can use to query the DHCP server on the external NIC to see what DNS servers it would set me up with w/o munging my existing setup?
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Jan 12, 2010
I have a machine running Karmic and dovecot/postfix as a mail server.Everything is working fine with the mail system, except one thing. After sitting for a while I am unable to get to the server via telnet/pop3/smtp. Immediately after I ssh into the server to check it, these services start working.
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Jan 2, 2011
I tried evince, okular and foxit reader for linux and wasn't able to change background and foreground colours with them. I'm able to do this with foxit reader for windows, so unless I find something that runs natively on ubuntu, I'll try running it under wine.
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Feb 27, 2010
I never use firefox because I use opera however I am really bored and I want to play around with my firefox however I have already ran into a problem, my problem is that firefox does not let me update to 3.6. I am currently using 3.0. How can I update my firefox? I use ubuntu 9.04.
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May 13, 2010
I keep my site files in an NTFS partition.When using Ubuntu, Apache gives me a forbidden 403 error when going to http://localhostI had this problem before, and if i remember correctly, to solve it I had to mount the hard drive as root when starting up, so I had this line in fstab:/dev/sda1 /media/Shared ntfs-3g quiet,defaults, locale=en_US.utf8,umask=000.But having that line there now doesn't make it work. It does mount Shared, and as root, but Apache still gives 403.
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Jul 19, 2011
I'm trying to get VNC working but I'm getting this error message:
Quote:
ssh: connect to host my_ip_address port 22: Connection refused
When typing:
Quote:
ssh -f -L 5900:localhost:5900 user@my_ip_address x11vnc -safer -localhost -nopw -once -display :0 && sleep 5 && vncviewer localhost:0
I'm trying to follow the instructions here: [URL] but I'm struggling with point 2 & 3:
Quote:
2. If you have previously reconfigured the firewall on your PC, make sure the firewall allows incoming connections on port 22 from anywhere, and on port 5900 from localhost (also known as 127.0.0.1)
3. If your PC is behind a home router, or any other device that uses NAT, configure your router to send connection attempts on port 22 (but not port 5900) to your PC
So my questions are:
1. I installed a fresh version of Ubuntu 11.4, should I be concerned about step 2? If so, how can I allow incoming connections on port 22 from anywhere, and on port 5900 from localhost?
2. Regarding step 3, I'm using NETGEAR model DGN1000 router. Is that something that I should do from the router's setting page or it's some commands that I should pass through SSH?
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Sep 12, 2010
I am trying to get apache:asp to work on on apache2. I have everything installed but any folder I put a asp file in apache locks me out ofere is the error I get.?localhost?refused the connection. Is there a way I can get apache to allow everything? read write browse eveything. Then after I troubleshoot asp and get it working I will start working on security.
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Feb 2, 2010
Hope you can help me out. I'm trying to setup a "drop-box" on ubuntu 9.10 server with vsftpd. I'm able to login and land in the /home/user directory, however I cannot write anything.
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Apr 18, 2010
But I fully have my server and everything up, MySQL, PHP5, Apache2, Postfix, Courier, SQMail, can't remember what else atm.
I installed mailx and used the mail command to send an email to my external email address, worked just fine. sent it to another email, worked as well.
But the problem is, I do 'telnet localhost 25' to test it like they say, it connects. I run 'ehlo localhost' Nothing happens.
I've tried setting it up with Thunderbird on my home pc and it connects to the IMAP & POP servers just fine, but it cannot establish a connection with SMTP, I've tried changing the SMTP port to other ones, still no luck.
Oh BTW, I use Ubuntu 8.04 LTS (Hardy Heron)
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May 1, 2010
I have an old T30 that has an incompatible wireless card with my network. How can I disable the builtin wireless card while allowing my USB Linksys card to fully function?I can't figure out how to have one run while disabling the other.
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May 15, 2010
I am running karmic on a laptop. I recently changed iptables to drop all new incoming packets (not the related or established ones) on all ports. I was not running a proxy, so this worked fine. More recently I got v 3.0.13 of privoxy with apt-get and looked through the config file. I changed the default port in the privoxy config to 8080 and kept the ip at 127.0.0.1. Then I changed the Firefox settings to use a HTTP proxy at 127.0.0.1 with port 8080. when I try to run privoxy with the command: privoxy /etc/privoxy/config , the terminal outputs no errors. Then when I try to access a webpage through firefox the page will not load, but firefox doesn't display any reason for it. I don't really even know if privoxy is running because when I check the logfile (after having uncommented the logfile line in the privoxy config file) it is blank. I don't know much about networking, but I was wondering if someone could tell me why this is happening? Well that was a bit dumb of me. I just had to allow new packages in from localhost.
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Sep 5, 2010
I've got two virtual machines running, the first VM (VM1) has two network interfaces, one bridged with my real lan, one a private subnet. The second VM (VM2) has one nic, only on the private subnet.
I have VM1 acting as a router for VM2, giving access to my real lan for internet access. The problem I'm having is I cannot get VM1 to forward ports 80 (http) or 222 (ssh) to VM2 from my real lan.
Here is the script I've cobbled together from various (foreshadowing!) locations:
Code:
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Dec 15, 2010
I have recently installed a LAMP server on Ubuntu 10.4 nd I would like to have the /var/www folder writeable and accessible by my other computers on the LAN. I know I have to install Samba but how do I configure it so I can map network drives to the WWW folder and allow read and write access?
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Dec 26, 2010
I'm trying to write a small application controlling spotify, running under wine, that I can run from my desktop computer and use via SSH on my mobile phone, and so far I've been quite successful. At least until just recently, when I tried to use the read command to read a single key-press on my phone, and use that input instead of having to type the number for item in the menu I've created. I tried to simply use the read command to silently listen to one key-press and output it to the variable opt. To do this I tried:
read -s -n1 opt
When I ran this in a shell-script this I got:
read: 1: Illegal option -s
Seeing this, I tried to remove the -s operator, which left me with:
read: 1: Illegal option -n
I decided to remove all operators and echo the variable opt, leaving me with:
read opt
echo "$opt"
Which worked as expected. It echoed the key that I had pressed. I moved over to my terminal window and tried the read command from there, and it did exactly what it should. It silently recorded one key-press to the variable opt.
why isn't read working with operators in shell scripts?
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Jan 5, 2010
am not able to install snmp in ubuntu, this is the code i followed from ....., "apt-get update and then apt-get install snmpd. the problem occurs is "could not resolve sg.security.com" and i cant updates using update manager.
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Aug 26, 2010
Do any programs need to be installed that aren't included in the default install of Linux Mint in order for it to allow VNC connections?
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May 11, 2010
I want to be able to auto scroll by clicking my middle mouse button. In Firefox you can do this in the about:config easily, but with Google Chrome, I don't know what to do.
There is no Chrome option to allow this, so I guess I'd have to configure some stuff. Does anyone know how to do this? I really prefer Chrome over Firefox, and would like to go back to it, but can't without auto scroll.
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Sep 11, 2010
Here's what I want to do: install ubuntu on a laptop and then create a normal user so that the user could install the normal upgrades without using the root account (or getting root privileges via sudo).
I know that this can be done by adding the user to the admin group, but this has (at least) two bad side effects:
1. The user can use sudo to gain root access. (And then do everything: install or remove programs...)
2. The update-manager doesn't seem to appear in the panel. (In stead it opens in the background.)
I could easily make a script that downloads and installs the upgrades automaticly, but I'd like to give the user a chance to choose when to do all this. So that it's not done for example when the user is using slow mobile connection.
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Feb 27, 2010
With this sqlite query ? I have these tables:
what is the query to list all cities and its neighboring cities like this?
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