I am trying to confiugre sendmail client and server environment. A very simple environment. On server side I configured sendmail and relaying the requests from other linux machines. On a server end emails are going out fine but on client side its not working with Deffered message in log. I tried to find any solution online but couldnt get any exact info to sort out this issue.On server side there is a entry of client machine in /etc/mail/access and I created access.db as well with make hash command.Is there something on server end that is not responding? or if I am doing something wrong please point out.
Linux printing appeared to be working fine up until yesterday. Today typing lpq gives the following: lpq Printer 'sdst@other.domain' - cannot open connection - Connection timed out Make sure LPD server is running on the server
The /etc/cups/printers.conf file is properly set, the printers appear in localhost:631 and they are printing test pages. However, all command line print commands seem to be trying to print to sdst@other.domain I don't know why printers.conf is being ignored and why and how sdst@other.domain was added. Seems like it might have been auto-discovered?
# dit: sdst@other.domain was mentioned in /usr/local/etc/lpd.conf I'm not sure why lpd.conf is being used instead of /etc/cups/printers.conf
I have SSH running on port 8662 and 22. I use 8662 for the outside world (eth0 which is 192.168 network) Here are the only lines I have changed in sshd_config:
Port 22 Port 8662 #Protocol 2,1
[code]....
BTW, ports forwarded on my firewall, checked and triple checked it.
I have 2 different networks :the first one is gateway machine (eth0), and the second is a private machine (eth1). So, I've configured the iptables and forwarding stuff and when I try to ping [url]..... on the gateway machine, it works, while it doesn't work on the private network. Note: I am using VmWare 7, CentOS 5.
I could say that the problem in DNS:because when I use this command in the private network machine: [url]...., it says connection timed out; no servers could be reached ,while in the public one, it works properly.....
I am not able to connect to remote server through secureCRT . my local team has said that server is working fine . but I am not able to connect it remotely . what more i can do to connect it to server
I've ben punding myhead on this issue. I've setup a new postifx server on rhel5. After editing the needed entries, i can't seem to send any outbound mails to yahoo or any other domains.My postconf -n is as follows:
I have been trying to solve this problem for two days now looking at various forums and websites but can't really figure out what's going on here.I have setup postfix on my ubuntu and I can send emails using "telnet localhost 25" and the ehlo thingy. Apache can also send emails. My problem is with incoming emails. When I try to send an email (through Gmail) I get the following error message:
Code: Delivery to the following recipient has been delayed: root@example.com
I've been trying to ssh out of my home network to school computers and I keep getting:
ssh: connect to host sage.math.washington.edu port 22: Connection timed out
I've tried this on my machine (running Ubuntu 10.04) and on a windows 7 machine (using putty). I have been successful ssh'ing to this machine using either of the laptops from every other network I've tried, so I'm pretty sure it's something about my home network.
In a little over my head here but eager to learn. Running Fedora 10 on an IBM T41. Trying to set up a local server so that I can run PHP and test webpages locally (I'm a client-side web designer). Went through the SendDerek tutorial and everything went great until I tried to check the port with canyouseeme.org. I get "Connection timed out" every time.
- The httpd service is started via the terminal. - Port 80 is unblocked via "Firewall Configuration." - I set up port forwarding on my router.
What am I missing? I just want to be able to have the local computer run my PHP scripts instead of having to upload them to a remote server every time I make a change.
OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar 2009 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to server ["address"] port 22. debug1: connect to address "address" port 22: Connection timed out ssh: connect to host "server" port 22: Connection timed out
I suppose this is because I am connecting from a public institute where there is a firewall that is blocking an outbound connection on port 22.Is there anyway I can bypass the firewall using the internet ?
I have setup a Postfix system under Ubuntu server and everything works fine but I have seen 2 mails that stayed queued deferred in my mailqueue.
They can't be send because I received this :
Other mails are going out but these two stay there. Maybe someone could guide me where to change or look for solving this problem. I have a FQDN but do not have a static IP from where I run this mailserver.
I have a box running, within this box I serve approx 18 sites. Starting few months ago. the memory usage seems to climbs up everyday. I've check my cron, and I don't have any cron that runs everyday (but hourly cron that only did checking external server's availability via wget). The only new thing that I've add was a backup script to dump mysql database, which occurs weekly. (I can post it's script if needed).
Here is my weekly memory chart [url]
And lately things are getting worse, everytime I did this:
Code:
At least one of my site returns with timeout. When I visit the site using my browser, the site is actually reachable but it takes about 20 seconds to load (my wget use timeout 10 seconds so it will surely returns with timeout). Each time one or two sites downs randomly. But about two-three small sites dominates - their chance to get slowed seems to be higher than the rest 15 sites.
Is there any way I can detect the problem? I really don't have any idea...
I'm a frequent user of the shared connection feature of SSH. Usually i have two or three connections open at the same time through the connection sharing feature, but sometimes when i try to start another i get the message "Shared connection to <server< closed". All the connection that are established through the connection sharing feature are still active and not closed, but when i try to create a new one i get that message.. i've even got that message when i have only had two connections through the shared connection feature.
I've tried to search google but it doesnt seem like anyone else has had the same kind of problem, does someone know why i sometimes get this error ?
I've been using synergy on Ubuntu 9.04 and windows xp.Synergy 1.3.1 on both machines.My problem is that the server keeps cutting out. It seems to happen a lot when I watch flash videos on the server machine (ubuntu). This is what the server side looks like:
Code:
NOTE: synergys.cpp,500: started server INFO: CServer.cpp,1141: screen "server" shape changed NOTE: CClientListener.cpp,127: accepted client connection
[code]....
I dont think I usually get disconnected when doing other tasks. Mostly only when watching flash videos. Sometimes it doesnt automatically reconnect, and I have to kill synergys and restart it.
You do not appear to be using the NVIDIA X driver. edit your X configuration file (just run `nvidia-xconfig` as root), and restart the X server.
Last night did a shutdown -h +120 which I have done regularly without problems. Only difference was there were some updates to go on which I said Restart later to.
Now my NVIDIA driver is screwed - as in I can't get my dual screens working. I have tried: sudo nvidia-config as suggested but not sure what it means by restart X server - PC restarted? No difference.
PPPOE connection Timed Out-i have downloaded the rp-pppoe utility and installed for PPPOE connection.As per the instruction given with the utility i followed that .i have given pppoe-setup and given all the parameters required like service name , username ,password,firewall as none ,dsn as server an all the option .finally i got the message as congratulation you have successfully setup the pppoe connection.you can use pppoe-start and pppoe-status.
I am building 1 system includes 1 firewall server using iptables 1 Webserver && 1 FTP server. On FTP server IP: 192.168.1.2 - GW: 192.168.1.1, I installed ProFTPD successfully. In LAN I do everything successful.
On Firewall server <IP PUBLIC> on eth0 && IP LAN eth1: 192.168.1.1 Iptables rules: Code: # Generated by iptables-save v1.3.5 on Sun Mar 7 21:01:16 2010 *nat :PREROUTING ACCEPT [950:126970] :POSTROUTING ACCEPT [89:5880] :OUTPUT ACCEPT [19:1342] -A PREROUTING -d <IP PUBLIC> -i eth0 -p tcp -m tcp --dport 21 -j DNAT --to-destination 192.168.1.2:21 -A POSTROUTING -s 192.168.1.2 -o eth0 -j SNAT --to-source <IP PUBLIC> COMMIT # Completed on Sun Mar 7 21:01:16 2010 # Generated by iptables-save v1.3.5 on Sun Mar 7 21:01:16 2010 *filter :INPUT DROP [1599:157409] :FORWARD DROP [0:0] :OUTPUT ACCEPT [232:34452] -A INPUT -i lo -j ACCEPT -A INPUT -i eth1 -j ACCEPT -A FORWARD -i eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT -A FORWARD -o eth0 -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT -A OUTPUT -o lo -j ACCEPT -A OUTPUT -o eth1 -j ACCEPT COMMIT # Completed on Sun Mar 7 21:01:16 2010 In FTP server i access to internet good. I check port 21 on IP PUBLIC , it's return Open.
But when I using ftp command then it's show Code: Connected to <IP PUBLIC>. 220 ProFTPD 1.3.3 Server (FTP Server) [192.168.1.2] User (<IP PUBLIC>:(none)): longvnit 331 Password required for longvnit Password: 230 User longvnit logged in ftp> dir 200 PORT command successful Aborting any active data connections... ftp> bye
C:Documents and SettingsLONGVNIT>ftp <IP PUBLIC> Connected to <IP PUBLIC>. 220 ProFTPD 1.3.3 Server (FTP Server) [192.168.1.2] User (<IP PUBLIC>:(none)): longvnit 331 Password required for longvnit Password: 230 User longvnit logged in ftp> dir 200 PORT command successful 425 Unable to build data connection: Connection timed out ftp> dir 200 PORT command successful 425 Unable to build data connection: Connection timed out ftp>
when I try to connect via PuTTY from a windows machine I get " PuTTY Fatal error connection timed out. I try to do so via a router redirecting IPadr:86 to local adr:22 on the Linux machine.
I seems not to be a routing issue since the router is setup to redirect apparently correctly.
Well I have stopped iptables and selinux is disabled. The sshd deamon is running. I can logon with ssh locally "ssh webcamATlocal adr".
I am not so experienced with networking in Linux. I've successfully installed Red Hat Linux Enterprise 5.2 on a VMware host. When I issued nslookup command, it returns "connection timed out" error as follows:
Code: [root@rac1 ~]# time nslookup rac1 ;; connection timed out; no servers could be reached real 0m15.038s user 0m0.000s sys 0m0.000s
My questions are: (1) Is that error normal? (2) Is there a way to decrease the 15.038s value? rac1 is the local hostname, so why it takes all that time to resolve it.
Following info may help: Code: [root@rac1 ~]# hostname rac1.mydomain.com [root@rac1 ~]# cat /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost #eth0 - PUBLIC 192.0.2.100 rac1.mydomain.com rac1
[root@rac1 ~]# ping -c 4 rac1 PING rac1.mydomain.com (192.0.2.100) 56(84) bytes of data. 64 bytes from rac1.mydomain.com (192.0.2.100): icmp_seq=1 ttl=64 time=0.015 ms 64 bytes from rac1.mydomain.com (192.0.2.100): icmp_seq=2 ttl=64 time=0.029 ms 64 bytes from rac1.mydomain.com (192.0.2.100): icmp_seq=3 ttl=64 time=0.029 ms 64 bytes from rac1.mydomain.com (192.0.2.100): icmp_seq=4 ttl=64 time=0.029 ms --- rac1.mydomain.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3000ms rtt min/avg/max/mdev = 0.015/0.025/0.029/0.007 ms
I am relatively new to Ubuntu. Currently running Lucid Lynx, but I cannot connect to the internet. I can ping 127.0.0.1, and google.com. Software update works as well, but the connection times out when I try connecting to a web site e.g. bbc.uk.
In our development box we are configured postgresql to work with Jboss. The thing is we have firewall iptables in our linux box. when the iptables is stopped we can connect the postgres db locally using -h option, also we can connect thru a weblink we have created using Jboss. But when the iptables is started we can't connect the db locally using the -h option and the web is giving the below error. Caused by:
org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openC
I am having alot of trouble setting up evolution to work with gmail. I am using pop for recieving mail and it's slow but still works. When I try to send mail with smtp.gmail.com I get the error message that the connection timed out. How can I set this up to send and recieve email?
I am merely trying to change the port for my ssh server.However it isn't changing.I edited my ssh_config file to:
Code:
# This is the ssh client system-wide configuration file. See # ssh_config(5) for more information. This file provides defaults for[code]...
When i try to connect to my server via port 443 i get a connection refused error. However when i try to connect via port 22 it connects. Since that didn't work, i tried restarting the entire server.To restate, i changed the config file and restarted ssh then the computer, however the port didn't change.Ohh and yes my router is set to port forwarding on port 443, though it doesn't matter since I'm inside the network.
I have one server at home, connected through a router that gives me a static IP:192.168.1.2 - My PC192.168.1.3 - CentOS serverI enabled the port 80 into router forwarding system and I can connect properly to CentOS server, using the IP my internet provider gives me. My router automatically forwards a changed IP to my dyndns.com account so I can also access the server through a domain name (I pay to have it linked to one of my domains).My next step is to configure the mail server (dovecot) , so I can send emails from my local server(192.168.1.3).I was wondering if anyone has any tutorial links or tips to have the mail server configured through a home internet provider + home router.
I have configured openssh 5.8p2 with centos 5.6. My sftp is working fine with chroot environment but i am having problem with SCP. I am dealing with muliti Redhat servers. When i try to transfer data from other linux server through scp it gives connection refused. For e.g ssh 5.8 is configured on new server and i want to transfer files from old server which is using openssh 4.3 version.i created same username and password on new server as on old server.My sftp users on new server has no shell access but only sftp access. When i try to scp from old server to new server it gives error connection refused. Is the below configuration only for sftp and can't scp? According to google the configurations i found are for scp and sftp. Do i need to generate ssh keys by giving users on new server shell access, once created then stop shell access again, as i dont want to give shell access permanent for security reasons? but i want to use ssh keys for more security as well.
Port 22 PermitRootLogin no 1.override default of no subsystems[code].....
