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• SSL connection error for only one site (of many) on server

  - by Matt Lacey

  I have a server running many websites, each with SSL. One of the sites is now refusing connections over SSL. This was previously working and I'm looking for assistance in determining what has been changed. Here's the situation: http://site1.com/ - works https://site1.com/ - works http://site2.com/ - works https://site2.com/ - Doesn't work (but did previously) Both sites are on the same server (Win Server 2003 SP2 - IIS6) Both sites use certificates from the same authority and are both valid (according to IIS). As far as I can tell, both sites have certificates configured identically in IIS. (Checked by a manual/visual check of properties, side by side) Through use of OpenSSL I can see that there's a "ssl handshake failure" when trying to connect to site2 using https. What could be the cause of this? How can I investigate further? Without SSL connections being available to this site, users are unable to log in or register. :( disclaimer: I'm not a server admin and not responsible for the box. Yes, there are wider issues here but I need to get this working again first.

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• Tool to indicate type of network connection

  - by ggonsalv

  I know of whoami.exe. Is there a version called whereami.exe The output should be able to tell me if I am on a LAN, wireless or VPN. the machines would be running Windows Xp or better.

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• Restrict SSH user to connection from one machine

  - by Jonathan

  During set-up of a home server (running Kubuntu 10.04), I created an admin user for performing administrative tasks that may require an unmounted home. This user has a home directory on the root partition of the box. The machine has an internet-facing SSH server, and I have restricted the set of users that can connect via SSH, but I would like to restrict it further by making admin only accessible from my laptop (or perhaps only from the local 192.168.1.0/24 range). I currently have only an AllowGroups ssh-users with myself and admin as members of the ssh-users group. What I want is something that works like you may expect this setup to work (but it doesn't): $ groups jonathan ... ssh-users $ groups admin ... ssh-restricted-users $ cat /etc/ssh/sshd_config ... AllowGroups ssh-users [email protected].* ... Is there a way to do this? I have also tried this, but it did not work (admin could still log in remotely): AllowUsers [email protected].* * AllowGroups ssh-users with admin a member of ssh-users. I would also be fine with only allowing admin to log in with a key, and disallowing password logins, but I could find no general setting for sshd; there is a setting that requires root logins to use a key, but not for general users.

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• Remote connection to a Windows 2008 Server Web edition

  - by Lorenzo

  Hello I have just installed Windows 2008 web server to have a development/test site on my office. In the test network I only have 2 machines: Windows server 2008 Web Edition Vista x64 client machine with Visual Studio The client and the server are networked using a NETGEAR router. I have enabled Remote desktop on the server and when I try to connect to it within the Vista client I get the credential window as in the following screenshot. But even if I write the correct credentials I am not able to remote login on the server. Where am I doing wrong? Update 1 I have even tried to create a folder share on the server. But I am not able to access it for the same reason. User or password invalid it says. But this is impossible as I am logging in the server with the same credentials. Update 2 If I try to browse the network from the RDP client I receive a message saying that there are no server running Terminal Services in my network.... :O

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• SSL connection hangs as client hello (curl, openssl client, apt-get, wget, everything)

  - by Niklas B

  Hi, I've run into a problem on my Debian VPS (a xen domU) regarding SSL. Namely almost all SSL connections hangs at client hello. For example: # curl -vI https://graph.facebook.com About to connect() to graph.facebook.com port 443 (#0) Trying 66.220.146.48... connected Connected to graph.facebook.com (66.220.146.48) port 443 (#0) successfully set certificate verify locations: CAfile: none CApath: /etc/ssl/certs SSLv3, TLS handshake, Client hello (1): It's the same when using the openssl client. However, some of the SSL traffic works (for example https://www.nordea.se). Server #uname -a Linux server.com 2.6.26-1-xen-amd64 #1 SMP Fri Mar 13 21:39:38 UTC 2009 x86_64 GNU/Linux It does however work on my Dom 0 (the main xen host). Apt-get I can't even run apt-get update with the debian security sources (hangs on reading headers) Open SSL At the begining I thought I had an old openssl client (0.9.8o-4) since I appeared to have a newer on the Dom 0 (0.9.8g-15+lenny8) but doing a manuanl update on the openssl deb didn't help. Open SSL Client This is the full output of when the openssl client hangs: http://pastebin.com/PAjwMap9 Closing thoughts I've Googled the crap out of this, and I'm not getting any further. I've seen problems with curl, apt-get etc. but they are all specific relating to the very application - not general for the system. Any thoughts?

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• Apache connection intermittantly times out on LAN

  - by jonescb

  I'm using Fedora 12 with Apache 2.2.14, and I was having this error on 2.2.13 as well. Even when I connect to my server over LAN, Firefox will occasionally time out while connecting. I can't figure out what is causing this. The error log isn't showing anything. I even cleaned the error log file, so that if something happened, it'd be a little easier to spot. But I'm still getting time outs, and nothing in the error log. Can anybody help me find what the problem is? Here is my httpd.conf Pastebin It's the default Fedora configuration; I've only changed the ServerName if I remember correctly. I'm pretty sure it's not the Timeout setting, because on LAN it should never time out. I don't believe it's a load issue either, I'm the only one connecting to it. I'm not an Apache expert, so if more information is needed I'll need some instructions on how to get that data.

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• Troubleshoot telnet connection from Windows 7 to UNIX

  - by Sujay Ghosh

  I am trying to connect to an Asterisk server in USA. I am using telnet < IP Address 5038 from India to USA. The person in USA is able to telnet to the IP address and port from USA , but I am not able to do it from India. We are on different networks. I am using Windows 7 Ultimate, and have enabled the Telnet client. I have also used Putty without any success. Can someone suggest me what can be the problem and how can this be resolved.

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• belkin wireless router connection drops for ~60sec every ~15 mins

  - by j j

  Hi, I have a belkin wireless-g router, model F5D7230-4. about every 10-15 minutes, for about 1-1.5 mins I won't be able to browse any web sites. during this period, I usually get replys from "ping google.com". maybe 4/5 times I'll get a reply, 1/5 times i don't. I have changed the router DNS entries from "get DNS server from ISP" to 8.8.8.8, google's DNS and that hasn't fixed the situation. This happens on several computers, running windows7, xp, ubuntu, and a mac, so it is definitely NOT an issue with a computer configuration. any ideas?

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• IRC "proxy" for persistent connection between several computers

  - by Zeta Two

  I'm looking for a program that enables me to stay connected to one or more IRC networks and be able to view the log even though I connect from several different computers. I'm thinking about something like a proxy running on a server who always is connected to the servers/channels I want and to which I connect from whichever client I want to use. Does anyone know of a program like this? Edit: Apparently I could be running a IRC session in a shell on a server and connect to this but I would like something more GUI:ish.

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• Unable to logon using terminal server connection

  - by satch

  I have several W2K3 SP2 servers, admin TS enabled. I discovered this morning, I was unable to logon into some of them. I've a couple of Citrix servers in different farms, a SAP (IA64) app server and a cvs server. All of them show same sympthoms; remote connections are refused. I've been able to logon locally, and terminal server service is up, there are no users (so connections are not depleted). There are no errors in log in most servers. One of the Citrix ones, reported following errors: Event ID 50 Source TermDD Type Error Description The RDP protocol component X.224 detected an error in the protocol stream and has disconnected the client. and Event ID 1006 Source TermService Type Error Description The terminal server received large number of incomplete connections. The system may be under attack. Anyway, I suppose these errors appear because server isn't working, and Citrix users try to logon massively. (I nmap'ed server and port seems up). I've solved this problem rebooting before, but with so many servers affected it seems like a crappy workaround. Any idea about troubleshooting it properly? Thanks in advance

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• AWS Load balancer connection reset

  - by joshmmo

  I have an ELB set up with two instances. The issue I have with it is that when I do not add www. to it, the ELB just hangs. This is some info I get when I spider with wget: Spider mode enabled. Check if remote file exists. --2013-06-20 13:40:54-- http://learning.example.com/ Resolving learning.example.com... 54.xxx.x.x53, 50.xx.xxx.x71 Connecting to learning.example.com|54.xxx.x.x53|:80... connected. HTTP request sent, awaiting response... No data received. Retrying. when I add www. it works great. I have a GoDaddy SSL cert that I added to the listener section that covers 3 domains, www.learning.example.com, files.learning.example.com and learning.example.com. These are my listener settings: - HTTP 80 HTTPS 443 N/A N/A - SSL 443 SSL 443 Change canvasNew (Change) My EC2 instances are running apache2 on Ubuntu 12.04. I will be happy to post my vhosts file if needed. However, when I ran the server with the domains pointing to just one EC2 instance things worked fine. How can I fix this issue for learning.example.com? Why does www work just fine? A second question would be what is the difference between instance protocol and load balancer protocol? EDIT: Here are the dig results for learning.example.com from yesterday. I changed the DNS entry to point to one instance to make sure it was the elb. When I switch it back I will do it for www.learning.example.com ; <<>> DiG 9.9.1-P2 <<>> learning.example.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20210 ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;learning.example.com. IN A ;; ANSWER SECTION: learning.example.com. 2559 IN CNAME canvas-22222222222.us-west-1.elb.amazonaws.com. canvas-22222222222.us-west-1.elb.amazonaws.com. 60 IN A 54.xxx.x.x53 canvas-22222222222.us-west-1.elb.amazonaws.com. 60 IN A 50.xx.xxx.x71 ;; Query time: 83 msec ;; SERVER: 10.x.xx.20#53(10.x.xx.20) ;; WHEN: Thu Jun 20 13:40:47 2013 ;; MSG SIZE rcvd: 137 EDIT 2: Here is some more info that might be helpful. Port Configuration: 80 (HTTP) forwarding to 443 (HTTPS) Backend Authentication: Disabled Stickiness: Disabled(edit) 443 (SSL, Certificate: canvasNew) forwarding to 443 (SSL) Backend Authentication: Disabled So I switched everything to one EC2 IP address to bypass the elb to make sure things are working. It's running great. www and the non-www url work perfectly fine. Its only when I switch things to the ELB that learning.example.com hangs and www.learning.example.com works. Hopefully you can get some ideas flowing.

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• SeLinux blocking connection to sshd on Ubuntu 9.10

  - by Barton Chittenden

  When I try to log on to my laptop, which runs Ubuntu 9.10, the server rejects my login attempts. Checking /var/log/auth.log, I see the following: Feb 14 12:41:16 tiger-laptop sshd[6798]: error: ssh_selinux_getctxbyname: Failed to get default SELinux security context for tiger I googled for this, and ran across the following: http://www.spinics.net/lists/fedora-.../msg13049.html Here's the part that I think relates to the problem that I'm having: Quote: What's wrong on my system? Why it's not possible to login even if selinux is in permissive mode? Any suggestions? I'd start by trying to figure out why sshd isn't running in sshd_t (it seems to be running in sysadm_t). Paul. selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mail...stinfo/selinux Yes, sshd is running in sysadm_t: ps axZ | grep sshd system_u:system_r:sysadm_t 3632 ? Ss 0:00 /usr/sbin/sshd -o PidFile=/var/run/sshd.init.pi ls -Z /usr/sbin/sshd system_ubject_r:sshd_exec_t /usr/sbin/sshd Don't know why it's not sshd_t. I didn't modified something. It's a standard installation of sles11 with the default reference policy from tresys. Maybe this code snippet from policy/modules/services/ssh.te is responsible for that: Allow ssh logins as sysadm_r:sysadm_t gen_tunable(ssh_sysadm_login, true) Any ideas? Do you have boolean init_upstart set to on? if not try setting it to on. I do not believe ssh_sysadm_login boolean works currently but i may be mistaken. -- Yeah, setting init_upstart to on did the trick! THANK A LOT! Do you know why this prevents the user from logging in through ssh even if selinux is set to permissive?? Ok, so the million dollar question is "where do I set 'init_upstart=1'"? It's not clear from context which configuration file needs to be edited, and I'm not at all familiar with SELinux configuration.

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• How much processing power is required while downloading data from a high speed internet connection (

  - by avanish

  I was just wondering about the CPU usage while downloading data (say, for example, a movie) from the internet. Can anyone tell me, how much is a processor really in use while downloading and, in the first place, is a processor even really required during download?

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• Recent remote desktop connection sources

  - by altendky

  How can I identify the source of recent remote desktop connections to my computer? While at work I connected to my desktop there (XP SP3) from another system with files I want to access. I am now at home and connected to my desktop at work but I do not know the name of the other system there.

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• Stress test a server for simultaneous connection

  - by weston smith

  I am trying to figure out a practical way to stress test a server for 300 to 600 simultaneous connections. Any advice? Thank you everyone for the help. To be more specific (sorry I wasn't before) this is a Flash Media Server on AWS that will be streaming live video. I've been having problems with the video freezing/buffering for everyone and I need to verify if its on the user end, upload end, or server end. I mainly need help with stress testing the server with 300-600 multiple request before going live.

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• Network connection keeps dropping - bad hardware?

  - by Bill Sambrone

  Hello all, I've into a bit of a wall with a client of mine. In an office of 20 people, he is the only one who experiences broken connections to his mapped network drives. I have everyone set up with about 6 mapped drives, all pointing to the same server (no DFS), and everyone else can access them lightning fast. The environment consists of a mix of Windows 7 and XP machines, all 32-bit. The server holding the data everyone is mapping to is running on Server 2008 R2, and is a domain controller. We recently swapped out their old 10/100 switch for a shiny new Dell PowerConnect gigabit switch. We have also replaced an old dying Sonicwall with a shiny new one. Everything is running on an ESX host except for the DC, where everyone is getting data from. In my client's office, we have done the following: Swapped out his computer (Win7 and XP box) Swapped out the desktop switch in his office Removed the desktop switch in his office Changed out the network cable going to the wall Ran 'net config server /autodisconnect:-1' on the server Disabled remote differential compression on his current Win7 box When we swapped out his network cable, everything seemed fine for about 4 days. Normally I would get a phone call a couple times per day letting me know that Outlook has crashed (there is a 9GB PST living on the server he is always connected to), or that his software he is running from his L drive has crashed. I almost thought I had this solved, but after we rebooted the DC the other night he all of a sudden couldn't stay connected to his mapped network drives for more than 10 minutes. When I ran 'net use' from the command prompt, it listed all the network drives where were randomly in a state of 'OK', 'Disconnected', or 'Reconnecting'. What else should I try? Maybe there is bad wiring in the wall, patch panel, or a bad port in the new switch I have in the server room?

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• Remote desktop connection drops before login can appear

  - by Keatly

  Hi Everyone, Someone asked this question a few months ago and I have the exact same problem. I have tried all of the suggested solutions in the other posting (in particular reinstalling the video card on the server), but have not had any luck. I have gone through this troubleshooting guide in detail with no results: http://theillustratednetwork.mvps.org/RemoteDesktop/RemoteDesktopSetupandTroubleshooting.html I have a client with Remote Desktop enabled that I can't connect to in our local network. When I enter in the machine ip/port in the connect box and hit Connect, it briefly gives the normal "Connecting..." dialog box. However, after 2 seconds it just drops. No error message, nothing. Just disappears as if nothing was happening. •Windows XP SP3 •Windows firewall is open for 3389TCP •Machine is on a domain •RDP is enabled in My Computer •User is a local admin I have loads of other machines on the same domain with the same GPO that work fine. Any ideas?

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• Speeding up Connection Between Computer and Wireless/Bridged Router

  - by Justian Meyer

  Hey everyone, I looked through other questions, but didn't find useful responses. Our main computer has a dl speed of 6 Mbps, but some of our other computers are getting only 40-200 Kb! The router is wireless, but all computers are connected using a Netgear Wall-Plugged Bridge XE102, which transmits information via the building's powerline. It can't be the hardware itself, however, because some computers still manage decent speeds. The computers afflicted are running on Microsoft XP Service Packs 2 and 3, but so are computers that are totally functional. These speeds severely impede on productivity and are excruciatingly frustrating when trying to cram in time in the early hours. Could it be an issue with the computer? Location? Router? Many thanks in advance, Justian

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• Accessing network resources via vpn connection failes

  - by LikeHoo

  I already found some information on this problem here, but I still can't get it to work. Im trying to access some network resources on my server via vpn over the net. Im using a win7 home pc here and a win server 2008 rc2 with installed ras&routing role on the server. For vpn authentication I use a local user on the server with vpn-access. This user also has the rights to access to the network resources, but it neither finds the server under network nor is it able to connect the network drives... In similar topics here I found out that using the same credentials for vpn-authentication and network resources access does not work, but using different user for access didn't work either. All of these examples I found were in an active directory structure, but I don't have an active directory here. Does anyone know how to solve this problem without having to use an active directory? Thanks

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• Outlook Anywhere remote https connection issue

  - by holian

  We have SBS 2003, and we use DYNDNS. We forward dyndns address 443 to local server ip 443 port. mycompany.dyndns.org:443 -- server.mycompany.local:443 In android phone i can check my mails with Outlook Active Snyc. From remote machine i can check my mails in owa (https://mycompany.dyndns.org/exchange) But i can't set up outlook 2013 to remote connect. I installed server.mycompany.local to remote machine trusted cert container, but i got error message: "There is a problem with the proxy server's security certificate. The name on the security certificate is invalid or does not match the name of the target site. Outlook is unable to connect to the proxy server. (Error Code 10)" Is it possible to connect exchange, via dnydns? Whats the problem? Thank you

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• Thomson router reboots unexpectedly with an apparent remote connection attempt

  - by ChrisF

  I've got a weird problem. Every so often my rooter (a Thomson TG585 v8 running version 8.2.7.8 of it's firmware) reboots itself. It seems to be associated with this message in the event log: FIREWALL replay check (1 of 2): Protocol: ICMP Src ip: 183.178.144.177 Dst ip: xxx.xxx.xxx.xxx Type: Destination Unreachable Code: Host Unreacheable xxx.xxx.xxx.xxx is my external IP address 183.178.144.177 resolves to 183178144177.ctinets.com We've got a student from Hong Kong staying with us at the moment and the reboots seem coincidental with him starting up his laptop. I say this because a check on ctinets.com shows it to be based in Hong Kong, though our guest's laptop doesn't appear to have any software related to this company installed. I say "apparently" as he is running the Chinese version of Windows and his English doesn't cover technical subjects like this. I know this is an incoming message but I was assuming that it was in response to something on the student's laptop which is why the first thought was malware, but we've got anti virus on all the other machines and have run malwarebytes on his with a negative result so I don't think the problem is due to a virus or (known) trojan. What else can I do to stop this and identify the cause?

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• LAN connection suddenly domain_not_set.invalid

  - by Liam Coates

  I went to work today - internet fine as always. Came back, dreaded yellow triangle. I can connect wirelessly like i am now on my tablet. Thats completely fine. But through LAN I get the domain_not_set.Invalid message if I renew my IP for example. It seems I just don't have a DNS. But I have literally not touched anything no ones even been in the house. Hows that happen? Any help on why only wireless works would be great, I am gonna buy a wireless adapter tomorrow for the interim but I would like to know why. Thanks.

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• Securing a persistent reverse SSH connection for management

  - by bVector

  I am deploying demo Ubuntu 10.04 LTS servers in environments I do not control and would like to have an easy and secure way to administer these machines without having to have the destination firewall forward port 22 for SSH access. I've found a few guides to do this with reverse port (e.g. howtoforge reverse ssh tunneling guide) but I'm concerned with security of the stored ssh credentials required for the tunnel to be opened automatically. If the machine is compromised (primary concern is physical access to the machine is out of my control) how can I stop someone from using the stored credentials to poke around in the reverse ssh tunnel target machine? Is it possible to secure this setup, or would you suggest an alternate method?

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• How to forward connection from one interface to another under linux

  - by Daniel

  Hi, I have linux box which has two network interface, eth0, eth1. from eth1 I can access an internal website, say under port 8080. from outside the box, I can't access that network. my question is, is there a way I set up something so from outside the box, there appears to be a web server running in port 8080 and when I connect to it, it automatically forwards to eht1 the internal site? I tried to enable ip forward and add a static route, but it doesn't work. thanks.

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• how to create xampp mysql remote connection within my office ,

  - by Ranjit Kumar

  Before asking this question : i have gone through this link How do I allow remote access to mysql using xampp? But i couldnt make it up !!! i have installed xampp using xamppinstaller.exe and its version is 3.1.0. i am heidisql Gui for database managament i tried the same by changing the # bind-address from "127.0.0.1" to my system ip address as # bind-address to "192.168.1.69" After changing and restarting my xampp mysql i went to other system and tried to login (hedisql) with the hostname 192.168.1.69 and it gave me an error saying Error 1130(0000): host' ....' is not allowed to connect to this mysql server. what should i do please help me !!

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