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• Ubuntu 10.04 Windows2003 adding a route for GPO assignment

  - by David Carvalho

  I want the PC's that receive IP from my Ubuntu DHCP3-server to be able to retrieve the GPOs that are on my windows 2003 server. I'm using virtualbox and 3 virtual machines: 1 windows 2003 server 192.168.0.2 with 1 NIC (internal network). 1 ubuntu server 10.04 lts 192.168.0.1 with 1 NIC (internal network) and 3 aliases 192.168.21.0, 192.168.22.0, 192.168.100.0 1 Windows XP machine with 3 NIC's (internal network).

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• Out of nowhere, ssh_exchange_identification: Connection closed by remote hot me too

  - by dgerman

  See similar: Out of nowhere, ssh_exchange_identification: Connection closed by remote host Today, 6/19/12 attempting to ssh to the same host as usual ssh replied ssh_exchange_identification: Connection closed by remote host two additional attempts failed ssh -v $RWS OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug1: Applying options for * debug1: Connecting to Real-World-Systems.com [174.127.119.33] port 22. debug1: Connection established. debug1: identity file /Users/dgerman/.ssh/id_rsa type 1 debug1: identity file /Users/dgerman/.ssh/id_rsa-cert type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa-cert type -1 ssh_exchange_identification: Connection closed by remote host ping host was successful, ftp host was successful, ssh now successful, ssh -v $RWS OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug1: Applying options for * debug1: Connecting to Real-World-Systems.com [174.127.119.33] port 22. debug1: Connection established. debug1: identity file /Users/dgerman/.ssh/id_rsa type 1 debug1: identity file /Users/dgerman/.ssh/id_rsa-cert type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3 debug1: match: OpenSSH_4.3 pat OpenSSH_4* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.6 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'real-world-systems.com' is known and matches the RSA host key. debug1: Found key in /Users/dgerman/.ssh/known_hosts:5 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-with-mic,password debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/dgerman/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-with-mic,password debug1: Trying private key: /Users/dgerman/.ssh/id_dsa debug1: Next authentication method: password ++++ What gives?? +++++++++++ Mac OS X 10.4.7 , OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011, /Users/dgerman/.ssh > ls -la total 24 drwx------ 7 dgerman staff 238 Jun 19 15:46 . drwxr-xr-x 389 dgerman staff 13226 Jun 19 15:46 .. -rw------- 1 dgerman staff 1766 Feb 26 18:25 id_rsa -rw-r--r-- 1 dgerman staff 400 Feb 26 18:25 id_rsa.pub -rw-r--r-- 1 dgerman staff 67 Feb 26 18:27 keyfingerprint -rw-r--r-- 1 dgerman staff 6215 May 1 08:11 known_hosts -rw-r--r-- 1 dgerman staff 220 Feb 26 18:26 randomart

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• Keep source IP after NAT

  - by John Miller

  Until today I used a cheapy router so I can share my internet connection and keep a webserver online too, while using NAT. Users IP ($_SERVER['REMOTE_ADDR']) was fine, I was seeing class A IPs of users. But as traffic grown up everyday, I had to install a Linux Server (Debian) to share my Internet Connection, because my old router couldn't keep the traffic anymore. I shared the internet via IPTABLES using NAT, but now, after forwarding port 80 to my webserver, now instead of seeing real users IP, I see my Gateway IP (Linux Internal IP) as any user IP Address. How to solve this issue? I edited my post, so I can paste the rules I'm currently using. #!/bin/sh #I made a script to set the rules #I flush everything here. iptables --flush iptables --table nat --flush iptables --delete-chain iptables --table nat --delete-chain iptables -F iptables -X # I drop everything as a general rule, but this is disabled under testing # iptables -P INPUT DROP # iptables -P OUTPUT DROP # these are the loopback rules iptables -A INPUT -i lo -j ACCEPT iptables -A OUTPUT -o lo -j ACCEPT # here I set the SSH port rules, so I can connect to my server iptables -A INPUT -p tcp --sport 513:65535 --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -p tcp --sport 22 --dport 513:65535 -m state --state ESTABLISHED -j ACCEPT # These are the forwards for 80 port iptables -t nat -A PREROUTING -p tcp -s 0/0 -d xx.xx.xx.xx --dport 80 -j DNAT --to 192.168.42.3:80 iptables -t nat -A POSTROUTING -o eth0 -d xx.xx.xx.xx -j SNAT --to-source 192.168.42.3 iptables -A FORWARD -p tcp -s 192.168.42.3 --sport 80 -j ACCEPT # These are the forwards for bind/dns iptables -t nat -A PREROUTING -p udp -s 0/0 -d xx.xx.xx.xx --dport 53 -j DNAT --to 192.168.42.3:53 iptables -t nat -A POSTROUTING -o eth0 -d xx.xx.xx.xx -j SNAT --to-source 192.168.42.3 iptables -A FORWARD -p udp -s 192.168.42.3 --sport 53 -j ACCEPT # And these are the rules so I can share my internet connection iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables -A FORWARD -i eth0:1 -j ACCEPT If I delete the MASQUERADE part, I see my real IP while echoing it with PHP, but I don't have internet. How to do, to have internet and see my real IP while ports are forwarded too? ** xx.xx.xx.xx - is my public IP. I hid it for security reasons.

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• unable to access a NAT'ed IP via a VPN on Windows 7

  - by crmpicco

  I connect to a range of servers hosted by one provider via a VPN. I can connect to the VPN fine, however when I then go and try and connect to the server(s) it fails. A NAT'ed IP address that has worked up until today, has stopped working either via SSH/SFTP. As you can see below, if I try and ping the IP then it responds with Destination host unreachable, but, for some reason it says the reply is from 192.168.0.8? If it enter this IP address in my browser, I get nothing. Where is this IP coming from and is there any good reason why I cannot access the IP I am trying to ping? C:\Users\crmpicco>ping 172.26.100.x Pinging 172.26.100.x with 32 bytes of data: Reply from 192.168.0.8: Destination host unreachable. Reply from 192.168.0.8: Destination host unreachable. Reply from 192.168.0.8: Destination host unreachable. Reply from 192.168.0.8: Destination host unreachable. Ping statistics for 172.26.100.x: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), I have the VPN remote host address of 80.75.67.x, which shows me as being connected. But i'm unsure if there is a config issue at the server side or my end that has caused this issue? I have had some recent Win7 (automatic) updates, but it's hard to tell if that's caused this problem. This is my output from arp: C:\Users\cmorton>arp -a Interface: 192.168.0.8 --- 0xe Internet Address Physical Address Type 192.168.0.1 00-18-4d-b9-68-5e dynami 192.168.0.6 00-f4-b9-68-0c-9a dynami 192.168.0.7 08-00-27-f2-9f-d6 dynami 192.168.0.255 ff-ff-ff-ff-ff-ff static 224.0.0.22 01-00-5e-00-00-16 static 224.0.0.251 01-00-5e-00-00-fb static 224.0.0.252 01-00-5e-00-00-fc static 239.255.255.250 01-00-5e-7f-ff-fa static 255.255.255.255 ff-ff-ff-ff-ff-ff static Interface: 192.168.56.1 --- 0x15 Internet Address Physical Address Type 192.168.56.255 ff-ff-ff-ff-ff-ff static 224.0.0.22 01-00-5e-00-00-16 static 224.0.0.251 01-00-5e-00-00-fb static 224.0.0.252 01-00-5e-00-00-fc static 255.255.255.255 ff-ff-ff-ff-ff-ff static

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• Failed to start up after upgrading software in ubuntu 10.10

  - by Landy

  I've been running Ubuntu 10.10 in a physical x86-64 machine. Today Update Manager reminded me that there are some updates to install and I confirmed the action. I should had read the update list but I didn't. I can only remember there is an update about cups. After the upgrading, Update Manager requires a restart and I confirmed too. But after the restart, the computer can't start up. There are errors in the console. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. [xxx]usb 1-8: new high speed USB device using ehci_hcd and address 3 [xxx]usb 2-1: new full speed USB device using ohci_hcd and address 2 [xxx]hub 2-1:1.0: USB hub found [xxx]hub 2-1:1.0: 4 ports detected [xxx]usb 2-1.1: new low speed USB device using ohci_hcd and address 3 Gave up waiting for root device. Common probles: - Boot args (cat /proc/cmdline) - Check rootdelay=(did the system wait long enough) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) FATAL: Could not load /lib/modules/2.6.35-22-generic/modules.dep: No such file or directory FATAL: Could not load /lib/modules/2.6.35-22-generic/modules.dep: No such file or directory ALERT! /dev/sda1 does not exist. Dropping to a shell! BusyBox v1.15.3 (Ubuntu 1:1.15.3-1ubuntu5) built-in shell(ash) Enter 'help' for a list of built-in commands. (initramfs)[cursor is here] At the moment, I can't input anything in the console. The keyboard doesn't work at all. What's wrong? How can I check boot args or "root=" as suggested? How can I fix this issue? Thanks. =============== PS1: the /dev/sda1 is type ext4 (rw,nosuid,nodev) PS2: the /dev/sda1 can be mounted and accessed successfully under SUSE 11 SP1 x64.

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• Port forwarding not working properly

  - by sudo work

  I'm trying to host a small web server from my home network; however, I have not been able to successfully port forward ports to the local server. My current network topology looks like this: Cable Modem/Router - Secondary Wireless Router - Many computers (including server) The modem/router I'm using is a Cisco (Scientific Atlantic) DPC2100, provided by my ISP. The wireless router that I'm using as the central hub to my home network is a Linksys E3000. The computer being used as a server is running Ubuntu 10.04 Server Edition. The main issue is that I can't access the server remotely, using my WAN IP address. I have port forwarded my wireless router; however, I believe that I need to somehow set my modem to bridge mode. As far as I can tell though, this isn't possible. Here are the various IP address settings: DPC2100 WAN: 69.xxx.xxx.xxx Internal IP: 192.168.100.1 Internal Network: 192.168.7.0 E3000 IP Address: 192.168.7.2 Gateway: 192.168.7.1 Internal IP: 192.168.1.1 Internal Network: 192.168.1.0 Server IP Address: 192.168.1.123 Gateway: 192.168.1.1 Now I can do an nmap at various nodes, and here are the results (from the server): nmap localhost: 22,25,53,80,110,139,143,445,631,993,995,3306,5432,8080 open nmap 192.168.7.2: 22,25,80 (filtered),110,139,445 open (ports I have forwarded in the E3000)* nmap 69.xxx.xxx.xxx: 1720 open *For some reason, I can SSH into the server at 192.168.7.2, but not view the website. Here are also some other settings: /etc/hosts/ 127.0.0.1 localhost 127.0.1.1 servername ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters /etc/apache2/sites-available/default snippet <VirtualHost *:80> DocumentRoot /srv/www/ <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> ... </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> ... </Directory> ErrorLog /var/log/apache2/error.log LogLevel warn CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> ... </Directory> </VirtualHost> Let me know if you need any other information; some stuff probably slipped my mind.

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• which is the recommended way to install sshd in cygwin on windows 7 enterprise

  - by anjanb

  What is the recommended procedure to install sshd on Windows 7 Enterprise ? I have already installed cygwin and openssh on this computer. i'm open to non-cygwin sshd as long as there won't be any compatibility issues with cygwin related programs. UPDATE I want setup/config information as well. Currently, I get an error if I try to connect to localhost. $ ssh localhost ssh: connect to host localhost port 22: Connection refused

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• What is correct of SCP command on Ubuntu Hardy

  - by April

  If the use the following scp command then I get an error: scp -P 22 [email protected]: /home/username/public_html/* ./ The error I get is: stdin: is not a tty scp: .: not a regular file What am I doing wrong? Thanks for help.

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• SSH stops at "using username" with IPTables in effect

  - by Rautamiekka

  We used UFW but couldn't make the Source Dedicated ports open, which was weird, so we purged UFW and switched to IPTables, using Webmin to configure. If the inbound chain is on DENY and SSH port open [judged from Webmin], PuTTY will say using username "root" and stops at that instead of asking for public key pw. Inbound chain on ACCEPT the pw is asked. This problem didn't happen with UFW. Picture of IPTables configuration in Webmin: http://s284544448.onlinehome.us/public/PlusLINE%20Dedicated%20Server,%20Webmin,%20IPTables,%200.jpgThe address is to the previous rautamiekka.org. iptables-save when on INPUT DENY: # Generated by iptables-save v1.4.8 on Wed Apr 11 16:09:20 2012 *mangle :PREROUTING ACCEPT [1430:156843] :INPUT ACCEPT [1430:156843] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [1415:781598] :POSTROUTING ACCEPT [1415:781598] COMMIT # Completed on Wed Apr 11 16:09:20 2012 # Generated by iptables-save v1.4.8 on Wed Apr 11 16:09:20 2012 *nat :PREROUTING ACCEPT [2:104] :POSTROUTING ACCEPT [0:0] :OUTPUT ACCEPT [0:0] COMMIT # Completed on Wed Apr 11 16:09:20 2012 # Generated by iptables-save v1.4.8 on Wed Apr 11 16:09:20 2012 *filter :INPUT DROP [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [1247:708906] -A INPUT -i lo -m comment --comment "Machine-within traffic - always allowed" -j ACCEPT -A INPUT -p tcp -m comment --comment "Services - TCP" -m tcp -m multiport --dports 22,80,443,10000,20,21 -m state --state NEW,ESTABLISHED -j ACCEPT -A INPUT -p tcp -m comment --comment "Minecraft - TCP" -m tcp --dport 25565 -j ACCEPT -A INPUT -p udp -m comment --comment "Minecraft - UDP" -m udp --dport 25565 -j ACCEPT -A INPUT -p tcp -m comment --comment "Source Dedicated - TCP" -m tcp --dport 27015 -j ACCEPT -A INPUT -p udp -m comment --comment "Source Dedicated - UDP" -m udp -m multiport --dports 4380,27000:27030 -j ACCEPT -A INPUT -p udp -m comment --comment "TS3 - UDP - main port" -m udp --dport 9987 -j ACCEPT -A INPUT -p tcp -m comment --comment "TS3 - TCP - ServerQuery" -m tcp --dport 10011 -j ACCEPT -A OUTPUT -o lo -m comment --comment "Machine-within traffic - always allowed" -j ACCEPT COMMIT # Completed on Wed Apr 11 16:09:20 2012 iptables --list when on INPUT DENY: Chain INPUT (policy DROP) target prot opt source destination ACCEPT all -- anywhere anywhere /* Machine-within traffic - always allowed */ ACCEPT tcp -- anywhere anywhere /* Services - TCP */ tcp multiport dports ssh,www,https,webmin,ftp-data,ftp state NEW,ESTABLISHED ACCEPT tcp -- anywhere anywhere /* Minecraft - TCP */ tcp dpt:25565 ACCEPT udp -- anywhere anywhere /* Minecraft - UDP */ udp dpt:25565 ACCEPT tcp -- anywhere anywhere /* Source Dedicated - TCP */ tcp dpt:27015 ACCEPT udp -- anywhere anywhere /* Source Dedicated - UDP */ udp multiport dports 4380,27000:27030 ACCEPT udp -- anywhere anywhere /* TS3 - UDP - main port */ udp dpt:9987 ACCEPT tcp -- anywhere anywhere /* TS3 - TCP - ServerQuery */ tcp dpt:10011 Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere /* Machine-within traffic - always allowed */ The UFW rules prior to purging on INPUT DENY: 127.0.0.1 ALLOW IN 127.0.0.1 3306 DENY IN Anywhere 20,21/tcp ALLOW IN Anywhere 22/tcp (OpenSSH) ALLOW IN Anywhere 80/tcp ALLOW IN Anywhere 443/tcp ALLOW IN Anywhere 989 ALLOW IN Anywhere 990 ALLOW IN Anywhere 8075/tcp ALLOW IN Anywhere 9987/udp ALLOW IN Anywhere 10000/tcp ALLOW IN Anywhere 10011/tcp ALLOW IN Anywhere 25565/tcp ALLOW IN Anywhere 27000:27030/tcp ALLOW IN Anywhere 4380/udp ALLOW IN Anywhere 27014:27050/tcp ALLOW IN Anywhere 30033/tcp ALLOW IN Anywhere

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• Using iptables to forward traffic destined for specific ip via specific interface

  - by shapeshifter

  I want to forward traffic destined for a specific ip from my internal network via a specific interface. I have two interfaces which are currently load balanced. I need all requests for a certain ip to go out via eth0 otherwise my external ip changes and sessions are dropped. eg. all requests from 10.1.1.1/24 to ip 11.22.33.44 on port 443 must go out via interface eth0. How can I do this with iptables?

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• SSH Connection Refused - Debug using Recovery Console

  - by olrehm

  Hey everyone, I have found a ton of questions answered about debugging why one cannot connect via SSH, but they all seem to require that you can still access the system - or say that without that nothing can be done. In my case, I cannot access the system directly, but I do have access to the filesystem using a recovery console. So this is the situation: My provider made some kernel update today and in the process also rebooted my server. For some reason, I cannot connect via SSH anymore, but instead get a ssh: connect to host mydomain.de port 22: Connection refused I do not know whether sshd is just not running, or whether something (e.g. iptables) blocks my ssh connection attempts. I looked at the logfiles, none of the files in /var/log contain any mentioning on ssh, and /var/log/auth.log is empty. Before the kernel update, I could log in just fine and used certificates so that I would not need a password everytime I connect from my local machine. What I tried so far: I looked in /etc/rc*.d/ for a link to the /etc/init.d/ssh script and found none. So I am expecting that sshd is not started properly on boot. Since I cannot run any programs in my system, I cannot use update-rc to change this. I tried to make a link manually using ln -s /etc/init.d/ssh /etc/rc6.d/K09sshd and restarted the server - this did not fix the problem. I do not know wether it is at all possible to do it like this and whether it is correct to create it in rc6.d and whether the K09 is correct. I just copied that from apache. I also tried to change my /etc/iptables.rules file to allow everything: # Generated by iptables-save v1.4.0 on Thu Dec 10 18:05:32 2009 *mangle :PREROUTING ACCEPT [7468813:1758703692] :INPUT ACCEPT [7468810:1758703548] :FORWARD ACCEPT [3:144] :OUTPUT ACCEPT [7935930:3682829426] :POSTROUTING ACCEPT [7935933:3682829570] COMMIT # Completed on Thu Dec 10 18:05:32 2009 # Generated by iptables-save v1.4.0 on Thu Dec 10 18:05:32 2009 *filter :INPUT ACCEPT [7339662:1665166559] :FORWARD ACCEPT [3:144] :OUTPUT ACCEPT [7935930:3682829426] -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m tcp --dport 25 -j ACCEPT -A INPUT -p tcp -m tcp --dport 993 -j ACCEPT -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m tcp --dport 143 -j ACCEPT -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -p tcp --dport 8080 -s localhost -j ACCEPT -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 -A INPUT -j ACCEPT -A FORWARD -j ACCEPT -A OUTPUT -j ACCEPT COMMIT # Completed on Thu Dec 10 18:05:32 2009 # Generated by iptables-save v1.4.0 on Thu Dec 10 18:05:32 2009 *nat :PREROUTING ACCEPT [101662:5379853] :POSTROUTING ACCEPT [393275:25394346] :OUTPUT ACCEPT [393273:25394250] COMMIT # Completed on Thu Dec 10 18:05:32 2009 I am not sure this is done correctly or has any effect at all. I also did not find any mentioning of iptables in any file in /var/log. So what else can I do? Thank you for your help.

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• Windows Firewall + FTP Server on WS03

  - by kovu

  Hi, my OS is Windows Server 2003. I installed the FTP Service and configure it with the IIS 6.0 Console. When I deactivate my firewall, all its okay, but when not, I can't get a connection. Port 21 tcp + udp, port 22 tcp + udp and the whole FTP-Server Application is set as go trouhgt, but don't work. Of course, the FTP ruins on 21. Any ideas

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• What is the size of an empty MS Word 2003 (.doc) document?

  - by pelms

  I'm trying to troubleshoot a problem Word document which has become blank after editing. It's file size is 22.0KB (22,528 bytes). Is this the same file size of an empty document - i.e. if you open Word 2003 and then save the empty doc? I only have Office 2007 available.

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• QuickSilver appear on multiple monitors

  - by Covar

  So I have a 22" Monitor that I use with my iMac, running an expanded desktop setup with secondbar so I always have a menu bar. How can I get Quicksilver to appear on both monitors when I go to use it, so I don't have to always shift my focus back to the main monitor?

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• ntpdate works, but ntpd can't synchronize

  - by dafydd

  This is in RHEL 5.5. First, ntpdate to the remote host works: $ ntpdate XXX.YYY.4.21 24 Oct 16:01:17 ntpdate[5276]: adjust time server XXX.YYY.4.21 offset 0.027291 sec Second, here are the server lines in my /etc/ntp.conf. All restrict lines have been commented out for troubleshooting. server 127.127.1.0 server XXX.YYY.4.21 I execute service ntpd start and check with ntpq: $ ntpq ntpq> peer remote refid st t when poll reach delay offset jitter ============================================================================== *LOCAL(0) .LOCL. 5 l 36 64 377 0.000 0.000 0.001 timeserver.doma .LOCL. 1 u 39 128 377 0.489 51.261 58.975 ntpq> opeer remote local st t when poll reach delay offset disp ============================================================================== *LOCAL(0) 127.0.0.1 5 l 40 64 377 0.000 0.000 0.001 timeserver.doma XXX.YYY.22.169 1 u 43 128 377 0.489 51.261 58.975 XXX.YYY.22.169 is the address of the host I'm working on. A reverse lookup on the IP address in my ntp.conf file validates that the ntpq output is correctly naming the remote server. However, as you can see, it appears to just roll over to my .LOCL. time server. Also, ntptrace just returns the local time server, and ntptrace XXX.YYY.4.21 times out. $ ntptrace localhost.localdomain: stratum 6, offset 0.000000, synch distance 0.948181 $ ntptrace XXX.YYY.4.21 XXX.YYY.4.21: timed out, nothing received ***Request timed out This looks like my ntp daemon is just querying itself. I am thinking about the possibility that the router-I-don't-control between my test network timeserver and the corporate network timeserver is blocking on source port. (I think ntpdate sends on port 123, which gets it around that filter and is why I can't use it while ntpd is running.) I have email in to the network folks to check that. Finally, telnet XXX.YYY.4.21 123 never times out or completes a connection. The questions: What am I missing, here? What else can I check to try to figure out where this connection is failing? Would strace ntptrace XXX.YYY.4.21 show me the source port ntptrace is sending from? I can deconstruct most strace calls, but I can't figure out the location of that datum. If I can't directly examine the gateway router between my test network and the timeserver, how might I build evidence that it's responsible for these disconnections? Alternately, how might I rule it out?

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• Windows Firewall + FTP Servier on WS03

  - by kovu

  Hi, my OS is Windows Server 2003. I installed the FTP Service and configure it with the IIS 6.0 Console. When I deactivate my firewall, all its okay, but when not, I can't get a connection. Port 21 tcp + udp, port 22 tcp + udp and the whole FTP-Server Application is set as go trouhgt, but don't work. Of course, the FTP ruins on 21. Any ideas

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• Unable to SSH to a virtualbox Redhat

  - by Rajat

  I am using a MAC and using virtualbox to start a Redhat instance. The instance is started with two adapters (first being NAT, and second being host-only-adapter). The problem is that I am unable to SSH from my Mac to the virtualbox instance using the IP (I am able to ping the IP, though). I checked in the iptables and SSH is allowed (port 22), and sshd daemon is also running. Anything I am missing?

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• unknown reciever Esmtp

  - by Morteza Soltanabadiyan

  I found this in my log server: sm-mta[11410]: r9BKb6YY021119: to=<[email protected]>, ctladdr=<[email protected]> (33/33), delay=2+07:24:18, xdelay=00:00:01, mailer=esmtp, pri=29911032, relay=mail1.mkuku.com. [58.22.50.83], dsn=4.0.0, stat=Deferred: Connection refused by mail1.mkuku.com. This message is repeated every 10-30 seconds with a different "to" address. What is this? Is my server being used to send spam?

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• Do you have problems with fonts in FireFox on big screens ??

  - by red777

  The problem is only in FF on bigger screens than 17" ,sometimes bigger than 22" monitors . I don't know why this happens, usually the problem is reported on windows vista and windows 7. Yes, I try the ctrl + 0 ,but that doesn't work . Can someone look at that page http://redmoonstudio.eu and tell mi what happens ? The page is in test/development.

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• SSH port forwarding. Connection refused [closed]

  - by Kein

  I want to make a port forward from my public server to my home pc, to connect through ssh. What have I done wrong? From home pc I run command: ssh -R 8022:127.0.0.1:22 remote.host Now when I try to connect with: ssh remote.host -p 8022 I get error "Connection refused" But when I connect to remote.host through ssh, and try to run: ssh localhost -p 8022 It connects to my home PC. How I can connect to home with one simple command? ssh remote.host -p 8022

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• VoxCAST / Voxel CDN experience?

  - by papanel

  Hello all, I see Voxel quoting $.10/GB, no monthly commitment. At our traffic level, this is significantly cheaper than I'm getting quoted from more established CDN's (generally .18-.22/GB). Anyone have any experience using them? Thoughts? Thanks!

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• How to use rsync when filenames contain double quotes?

  - by wfoolhill

  I am trying to synchronize the content of the directory my_dir/ from /home to /backup. This directory contains a file which name has a double quote in it, such as to"to. Here is my rsync command: rsync -Cazh /home/my_dir/ /backup/my_dir/ And I get the following message: rsync: mkstemp "/backup/my_dir/.to"to.d93PZr" failed: Invalid argument (22) For info, rsync works well when the synchronized filenames contain single quote, parenthesis and space. Thus, why is it bugging with a double quote? Thanks for any help.

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• Subnet address in apache access log

  - by m0ntassar

  I was inspecting my apache access logs(I use default combined log format) and I came a cross a wired entry 69.171.247.0 - - [22/Oct/2012:18:15:20 +0200] "GET /some site resources HTTP/1.1" 404 514 "-" "facebookexternalhit/1.0 (+http://www.facebook.com/externalhit_uatext.php)" As u see, this query come from a facebook robot that extract objects from site when somebody post a link. What I find weird is the logged ip address : 69.171.247.0 Does anybody know how is that possible ?

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• Thunderbird doesn't raise or give focus when you click "Write" or "Reply".

  - by Neil

  I'm using Thunderbird 2.0.22, the version that comes with Ubuntu Intrepid 8.10. When I hit "Reply" or "Write", a new email window pops up, but it ends up being under the main Thunderbird Window, and doesn't have focus. Thunderbird is the only application that exhibits this weird behaviour, and it just started happening one day, whereas it worked fine before. I've seen this problem years ago as well, and wasn't sure how I fixed it.

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• how can I give openvpn clients access to a dns server (bind9) that is located on the same machine as the openvpn server

  - by lacrosse1991

  I currently have a debian server that is running an openvpn server. I also have a dns server (bind9) that I would like give allow access to by the connected openvpn clients, but I am unsure as of how to do this, I already known how to send dns options to the clients using push "dhcp-option DNS x.x.x.x" but I am just unsure how give the clients access to the dns server that is located on the same machine as the vpn server, so if anyone could point me in the right direction I would really appreciate it. Also in case this would have anything to do with adding rules to iptables, this is my current configuration for iptables # Generated by iptables-save v1.4.14 on Thu Oct 18 22:05:33 2012 *nat :PREROUTING ACCEPT [3831842:462225238] :INPUT ACCEPT [3820049:461550908] :OUTPUT ACCEPT [1885011:139487044] :POSTROUTING ACCEPT [1883834:139415168] -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE COMMIT # Completed on Thu Oct 18 22:05:33 2012 # Generated by iptables-save v1.4.14 on Thu Oct 18 22:05:33 2012 *filter :INPUT ACCEPT [45799:10669929] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [45747:10335026] :fail2ban-apache - [0:0] :fail2ban-apache-myadmin - [0:0] :fail2ban-apache-noscript - [0:0] :fail2ban-ssh - [0:0] :fail2ban-ssh-ddos - [0:0] :fail2ban-webserver-w00tw00t - [0:0] -A INPUT -p tcp -m multiport --dports 80,443 -j fail2ban-apache-myadmin -A INPUT -p tcp -m multiport --dports 80,443 -j fail2ban-webserver-w00tw00t -A INPUT -p tcp -m multiport --dports 80,443 -j fail2ban-apache-noscript -A INPUT -p tcp -m multiport --dports 80,443 -j fail2ban-apache -A INPUT -p tcp -m multiport --dports 22 -j fail2ban-ssh-ddos -A INPUT -p tcp -m multiport --dports 22 -j fail2ban-ssh -A INPUT -i tun+ -j ACCEPT -A INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT -A FORWARD -i tun+ -j ACCEPT -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT -A fail2ban-apache -j RETURN -A fail2ban-apache-myadmin -s 211.154.213.122/32 -j DROP -A fail2ban-apache-myadmin -s 201.170.229.96/32 -j DROP -A fail2ban-apache-myadmin -j RETURN -A fail2ban-apache-noscript -j RETURN -A fail2ban-ssh -s 76.9.59.66/32 -j DROP -A fail2ban-ssh -s 64.13.220.73/32 -j DROP -A fail2ban-ssh -s 203.69.139.179/32 -j DROP -A fail2ban-ssh -s 173.10.11.146/32 -j DROP -A fail2ban-ssh -j RETURN -A fail2ban-ssh-ddos -j RETURN -A fail2ban-webserver-w00tw00t -s 217.70.51.154/32 -j DROP -A fail2ban-webserver-w00tw00t -s 86.35.242.58/32 -j DROP -A fail2ban-webserver-w00tw00t -j RETURN COMMIT # Completed on Thu Oct 18 22:05:33 2012 also here is my openvpn server configuration port 1194 proto udp dev tun ca ca.crt cert server.crt key server.key dh dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt keepalive 10 120 comp-lzo user nobody group users persist-key persist-tun status /var/log/openvpn/openvpn-status.log verb 3 push "redirect-gateway def1" push "dhcp-option DNS 213.133.98.98" push "dhcp-option DNS 213.133.99.99" push "dhcp-option DNS 213.133.100.100" client-to-client

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