CentOS 5 :: Tftpd Only Accepting Connections From Localhost?
Jul 12, 2011
Having a problem with tftpd on CentOS 5.5. I am only able to download files from the localhost address.
I have checked iptables (by adding rules and by turning the firewall completely off -- nothing changes) and enabled tftpd logging (by adding -v to the server_args section in xinetd.d/tftp) and I DO see the request coming in, but no response from the daemon. I've also tried upping the verbosity by adding multiple -vs and/or --verbosity 10 to the mix, but all I ever see is the initial request come in, nothing more. I've even tried running the daemon in foreground mode with -L but I get no verbosity then.
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Jul 14, 2010
I have ssh installed and running on my laptop(Debian Sequeeze). I can run "ssh localhost" without any problem. But for some reason I cannot connect to it from other computers. They all give "connection timed out". I can connect to these computers`s ssh servers but for some reason my laptop with Debian is not accepting any connections.
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Nov 30, 2010
I would like to know if a rule has been applied to the iptables.active file to accept direct connections on port 22 through an IP address, can I also add a mac address/addresses to the rules such that if I am not on the network with the accepting IP address, that my MAC address will still get me in?
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Dec 9, 2010
I have run a small webserver from my home computer and I can access it fine from computers on my local network, but cannot access it from other networks. I see in wireshark that the traffic is arriving at the computer and I have checked the firewall logs on my computer and nothing is being blocked(I use iptables as a firewall), and I can't see any reason why it shouldn't be working.
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Mar 29, 2010
I have installed talk on centos, turned it on by editing xinetd.d/talk and setting disable=no.I have restarted xinetd (service xinetd restart) and verified that talk is configured to start (chkconfig --status-all).what am i missing? shouldn't either port 517 or 518 respond to telnet? what else can i do to get talk running?
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Aug 17, 2010
I have configured my postfix server to use TLS (STARTTLS) but with no certificates either on server or client. Here are the TLS parameters in main.cf.
=========
smtpd_tls_security_level = may
# Obsolete, but still supported
#smtpd_use_tls = yes
#smtp_use_tls = yes
[Code]....
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Oct 25, 2010
I did a clean install of OpenSuse 11.3 a couple of weekends back. Everything is working great except the SSH server.Once I installed ssh, it appears to accept my connection, allows me to log in, and then freezes Putty, not allowing me to type anything into the terminal.If I wait several minutes, I'll get a message saying that the connection was closed. After that, the server won't accept connections.Sometimes it'll start accepting connections again, but after a while, the connection will close on its own. Other times, I will be unable to get a connection until I restart the server.If you guys needs any more information, please let me know. What could be causing this odd behavior?
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Oct 5, 2010
My tftp server stopped working. I don't know why. I tried re-installation of tftpd-hpa, I tried to install another server: atftpd in its place.They don't function.(Debian Squeeze)
XXXXXXXXXXXX
HPA's tftpd: in.tftpd/usr/sbin/in.tftpd: unrecognized option '--address'
Starting HPA's tftpd: in.tftpdinvoke-rc.d: initscript tftpd-hpa, action "start" failed.
dpkg: error processing tftpd-hpa (--configure):
[code]...
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Apr 24, 2011
I'm not sure if this belongs in the Server or Networking section of the forums. Anyway, last month I upgraded my server to Ubuntu 10.04 LTS. Since then, I've had a recurring problem wherein after a certain period of time, the server stops accepting network connections. Ubuntu 10 will continue to reject network connections until someone logs into the server locally, after which time network connectivity is restored and the cycle begins anew. Essentially, the server goes into a "half sleep mode". I say half because the computer is still on and the fans are running.
I've done some searching around various forms and initially figured this issue was related to problems with the Network Manager service (https://bugs.launchpad.net/ubuntu/lu...er/+bug/524454), so I removed the service altogether. However, this problem is still occurring.
I've poured over /var/log/messages and /var/log/syslog, but have noticed no irregular behavior. Has anyone else experienced this issues? I'd rather not resort to downgrading back to Gusty Gibbon if I can help it.
I am happy to provide more information if its needed
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Oct 2, 2010
I recently setup a new SUSE box for the purposes of acting as an ftp/sftp server. It's currently setup to run ProFTPD 1.3.3.rc3 and mod_sftp/0.9.7. The server has two internal network interfaces eth0 and eth1. eth0 is purely for internal use to accept ftp and ssh. eth1 is outward facing and receives connections from the WAN via SFTP over port 22. The problem I am facing is that after half hour to an hour eth1 stops accepting connections whenever there is no SSH connection present on eth0. I can't figure out why this is happening.
ProFTPD is setup as follows: SocketBindTight directive is on, default server and port are commented out.
[code]...
When the external interface is unreachable the proftpd and proftpd-sftp logs show no record of any connection attempt. I have noticed however if I leave eth0 down eth1 stays contactable without problem. Can anyone give me some pointers on what I can check to find out why this may be happening.
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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 3, 2011
Under 10.10 the settings dialogue for Remote Desktop said that other machines can connect to this one as kubuntu.local or 192.168.1.85 but after u/g to 11.04 instead of hostname or IP it now just says 'localhost' - which won't work for obvious reasons. I use RD a lot.
Also, despite 'Always display an icon' being checked no icon is displayed in the panel. I tried checking 'Never display an icon' closing the dialogue, re-opening it and re-selecting 'Always display' it still doesn't appear.
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Feb 20, 2009
I installed a new server running CentOS 5.2. I have iptables and SELinux off. The new server will not accept incoming mail. It will send out fine.Our mail server redirects mail for it.help to it.[url]...- [url]....is this server. Any messages sent to this address get stuck in a deferred queue. The error message on each one (from the mail server admin console) is "connection to[url]... [10.9.10.202] - connection refused". I can ping [url].... from the mail server.
This seems like a firewall issue, but it is off. Is there some configuration file I need to change to allow incoming mail? Or is there some test I can run on the new server to further troubleshoot what is going on
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Mar 16, 2011
is there still a bug in qBittorent with portforwarding 6881? i forwarded it in my router and run nmap on localhost and shows its open yet it is always saying no direct connections on the bottom with that little yellow globe near the nodes
[Code]....
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Feb 7, 2011
have 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.
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Sep 5, 2009
$mysqladmin -u root
just prints out a long option list and quits... sometimes it tells me that I cannot connect to localhost.... I've tried --no_defaults,--socket= etc. as per the MySQL manual.
MySQL 5.0.45 I know the server is running This is a new install and i'm su'd to mysql in mysql homedir. I'm sshing into DV Centos 5.
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Feb 13, 2010
I want to send mail to potential customers from my localhost server in my SOHO. I have a web site hosted with a company called geek hosting [URL], so I have access to the mail services through them... I want to their mail server to push things out to the world form my localhost server.
I do have a registered domain name which the hosted site runs under
the domain name for my centos 5.4 server is localhosthost.localdomain.
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Feb 7, 2011
I have configured tfpt server to work as xinet.d service.Below is conf file ftom /etc/xinetd.d/tftp
Code:
service tftp
{
socket_type= dgram
protocol= udp
wait= yes
[code]...
I have to make sure this service works, I tried to 'telnet server_name 69' but I get below error :
Code:
[root@ldap2 xinetd.d]# telnet localhost 69
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused
How can I verify that this service works ?
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Mar 13, 2009
it was not working and ping is not reply me and I add ifconfig lo 127.0.0.1 it is working and getting ping but when reboot it is lost setting how can I set it for always ping working.
PING localhost (127.0.0.1) 56(84) bytes of data.
ping: sendmsg: Operation not permitted
ping: sendmsg: Operation not permitted
ifconfig lo 127.0.0.1 later
[Code]....
now working but IWant reboot later working about same. how can I setting it boot start this .
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Sep 25, 2009
php can't connect mysql by 'localhost' but can connect by IP address:
[Code]...
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Feb 9, 2010
We installed CentOS 5 at our school and are attempting to get 2 simple DNS servers online. These are simple name resolution servers for our network. We installed the needed caching nameserver packages via Yum and all seems to be well, but for some reason when the server is online, it fails to resolve DNS records except when we direct the requests to its 127.0.0.1 (localhost) interface. As for the server specs, the DNS server is running on a Virtual Machine, and the ESXi server has 2 quad-core Xeon CPU's with 48 Gigs of RAM (in short.. hardware is adequate.)
Here's more details:
When the box boots up, we can confirm that the named service is running and it resolves DNS records when we direct queries to its localhost address:
[root@ns1 ~]# dig hotbot.com @localhost
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> hotbot.com @localhost
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55510
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0 .....
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> hotbot.com @66.186.176.2
;; global options: printcmd
;; connection timed out; no servers could be reached
What would cause the Named service to not answer DNS queries from the physical IP but only from it's internal IP?
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Mar 10, 2010
the custom-yum.sh script (or, whatever you say ) below:
#!/bin/bash
## Mounting CD/DVD ##
echo "Mounting CD/DVD in /media"
mount /dev/hdc /media
[Code].....
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Jun 1, 2011
I'm having difficulties with ntpd on my CentOS 5.6 install.
It all starts well; the server connects and synchronizes with a couple of public ntp servers:
[root@toro ~]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
+ntp.networking4 193.67.79.202 2 u 1 64 377 35.652 47.102 12.349
*deepthought.doc 131.188.3.223 2 u 2 64 377 29.010 44.358 11.585
[Code]....
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Dec 8, 2010
What is the proper way to stop tftpd from starting up? There is no numbered rc script symlink for it so I can't use update-rc.d. I don't want to just hack a file unless that is considered "the way".
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Nov 9, 2010
Tftpd doesn't start with xinetd ,unable to catch where the error is ?
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Jan 27, 2009
I followed this tutorial for setting up my server. Whatever I type into mysql or mysqladmin all I get back is Quote:ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
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Aug 23, 2009
I have installed bind from the repos and am trying to setup a caching name server. After copying the stock name-cachinging.conf to named.conf, I tweaked named.conf to reflect my LAN:
options {
listen-on port 53 { 127.0.0.1; 192.168.1.102; };
listen-on-v6 port 53 { ::1; };
[code]...
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Oct 7, 2009
I'm running wordpress and have gone to the painstaking effort of setting up the ftp server on my 5.3 machine so it can do its own updates and download plugins. However, I've found that if I try to download anything, I get a "unable to resolve host..." error from the script. If I watch Iptraf while making the request, I see all the port 53 requests going to 127.0.0.1. Pings are too.
However, if I ssh in, I can ping and wget and whatever I want all day long and all the DNS requests to go the router (Clarkconnect 3.2 gateway machine). The web browser in the terminal works fine too. What is it about the php scripts that is causing them to misdirect pings and dns requests? I've never seen anything like it and can't find anything on the web about it either.
[Code]....
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Sep 24, 2011
Just setup my postfix and trying to telnet localhost.
here it is..
telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.
I wanna paste my /var/log/maillog but i don't know how, when i copy from putty screen it's only copied part of the log.
btw i found one similar problem here [URL] but the thread starter already lost the pastebin so i don't know how he resolved the problems.
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Mar 15, 2010
I have a problem with TFTP files greater than 32MB with Ubuntu. I haven't been able to find a fix for this issue. This has been a known issue for years and was corrected in the winodws world(AUGH !). when I did an apt-get install this morning it said my tftp was up to date.
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