A connection generally refers to a TCP/IP connection, that is established as the result of the handshake between 2 hosts.

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20 views

connection via ip fails but can be established using hostname

I cannot reach the Server using the IP-Adress, but if I use the FQDN or the hostname itself, the connection can be established. The connection should be established by the ...
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16 views

mod_jk losing connection with tomcat

I'm running an Apache tomcat + mod_jk 1.2.40 behind an apache web server. Everything has been setup and works properly for some amount of time since a tomcat startup (measurable in days/weeks); then ...
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1answer
38 views

Idrac 6 internet settings enabled to connect to internet via ssh [closed]

I just installed the idrac 6 enterprise into dell r410. I insert the cable on it. But there is no connection. Green light on !! Normally when i restart the server and when I use the normal connection ...
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1answer
60 views

Is ARP Connection oriented or connectionless?

Is ARP Connection oriented or connectionless? It uses TCP, but does that consider it connection oriented?
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1answer
35 views

Named failed due to permissions and connect fail error

I'm facing a serious problem which has knocked out my server. For some unknown reason, named is no longer working, despite doing my best to remediation the issues found on the logs. I get this error ...
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0answers
7 views

Short-circuited ethernet wiring? Cable tester loop [migrated]

Ethernet at the place I rent was dead, and since I noticed the wire was terminated in "reverse" 568 B standard, I bought crimper and cable tester to fix it. However, there is still NO connection ...
3
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0answers
91 views

TCP connection stuck in SYN_RECV state despite ACK received

My client and server are both internal machines. tcpdump on both client and server show all three parts of handshake are communicated, however netstat on server shows SYN_RECV, and on client shows ...
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0answers
56 views

Amazon AWS connection issues

I have a strange issue with my Amazon EC2 instance. I have created the following: m3.medium instance hosted in the Amazon cloud This instance runs the following a. Apache Tomcat application server ...
1
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1answer
52 views

windows 8 taking long time to open Mac server share [closed]

I have a machine running windows 8 on a Mac server environment. When mounting or accessing a small/empty shared folder on the network the computer connects fine. When accessing another shared folder ...
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1answer
42 views

Can I use an external IP to make 2 internal IP's establish a TCP/UDP connection? [closed]

As I understood, in order to make a connection to an internal IP (behind NAT), the computer behind the internal IP have to send the request first before the other side will be able to answer it, So if ...
0
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1answer
29 views

Task Manager shows more worker processes than the max set [closed]

I am doing application pooling for a web application used by huge number of users and set web garden with a max of 20 worker processes. But in task manager, I see more processes than the w3wp ...
1
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2answers
119 views

Test port reachability from a remote host even though the port is not bound to a service?

I need to check whether a remote host is able to reach a specific port. At the time of test the service bound to that port will be down. The possible issues that the test would address would be : ...
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1answer
28 views

I have a IP address with some open services. How could I contact the owner? [closed]

After having serious problems (DNS incident) I found out an IP address of a machine. Is it in any way possible to contact the owner without knowing anything else like email, domain name or website? I ...
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0answers
44 views

Cannot connect to TCP service from remote host

I have two servers running RHEL 5.8. SRV1 (10.58.192.36) has a service running on port 9002 and I need to connect to this service from SRV2 (10.58.192.42). [root@SRV1 ~]# netstat -anp | grep 9002 tcp ...
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0answers
57 views

Connectivity issues (slow response) to a remote VM via SSH

I am on a linux machine trying to Ssh into a remote Centos 6.4 server via VPN. The server often gets disconnected and response too is slow. I see the messages on the terminal once in a while: ...
0
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1answer
71 views

Mysterious Upstream Client ::ffff:81.70.140.65…changes on each error

I read the following post: nginx errors recv failed 104 ...but have a different question... I'm curious to know why there is ANY reference to this mysterious upstream source: ::ffff:81.70.140.65 ...
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0answers
36 views

jboss 7 connection to database vip fail

Jboss 7 is connecting to HA database with VIP. When master db fails, the HA kicks in and slave db takes over as master. Querying directly the new master db works fine. However, at Jboss level, the ...
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0answers
7 views

Connect to Cube without using Windows account

Is it possible to connect to OLAP Cube (SQL Server) without using Windows account. Currently, I need to be on the same domain in order to connect to a cube. Are there any other solutions?
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0answers
547 views

ssh_exchange_identification: read: Operation timed out

I am trying to connect to my server (Synology DS212) using ssh xxx@yyy -p 22222 -vvv but I can't and I obtain the following error: OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading ...
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2answers
336 views

No Ping/Telnet connection between VM

I am new in Azure and have one problem which I can not solve. I tried asking on StackOverflow, but - quoting - "You will have better luck asking on ServerFault". I want several Virtual Machines to ...
0
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0answers
179 views

OpenVPN - Http proxy - connection reset

I am dealing with a problem in OpenVPN (I think so) and maybe someone can help to sort it out. I am connecting to the internet through a HTTP proxy server (10.0.0.1:8080). As I set manual ...
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1answer
63 views

How Do I Limit the Number of Simultaneous Connections to a Network Share?

Is there some mechanism to actively refuse connections to a network share in a Windows domain environment by using some predefined conditions on the server that hosts the share (if possible)? Let's ...
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1answer
100 views

NSClient++ traffic dropped only for external IP traffic

I am trying to use NSClient++/Icinga to monitor our Windows server boxes at remote locations. I have tested the NSClient on our internal network (192.168.1.*) and it works as expected with the server ...
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1answer
40 views

Can bad DNS replication cause a user to loose connectivity to a shared drive [closed]

We have multiple users that loose connections to shared drives on a particular server. I am able to ping the server hosting the files but can not see the host, or directories. Also its not 1 user, its ...
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2answers
206 views

Haproxy backend servers on different interfaces

I have a haproxy server which gets limited to some 60k connections. I think it is because of ephemeral port limit as I have 1:1 connection mapping, so all my outgoing connections go to the same ...
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0answers
197 views

Connection Reset by Peer error with Apache and JBoss 7.1.1

We are seeing errors on some of our QA testing scripts that intermittently throw Connection Reset By Peer errors. The Test scripts submit requests via F5 which forwards requests to Apache (2.2.21) ...
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2answers
144 views

Cant ssh to my public ip [duplicate]

I have been able to log on to my dev box (which is in my home network) for a while now, using ssh username@publicip however recently this has become impossible due to the following error ...
0
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1answer
61 views

Sometimes my http server does not respond and I see errors like connection reset or timout

Here is the graph from munin that might help and also here is my http.conf: <IfModule prefork.c> StartServers 8 MinSpareServers 5 MaxSpareServers 40 ServerLimit 2048 ...
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1answer
34 views

Users unable to connect due to an unknown plausible reason [closed]

========================= Warning: Long thread; includes a lot of information to give you some basic understanding of my issues. If you rather not read it, then here are my questions: 1) Does Linux ...
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votes
1answer
271 views

Unable to use Remote Desktop connect to Windows server 2003 by Terminal Services

I have a system composed with few windows servers 2003 R2, one is built as the domain controller another one as a web server. I tried to remotely log on the domain controller with a wyse thin client ...
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0answers
38 views

Why is my server so slow to accept connections?

I've noticed that my server seems to be very slow to accept connections - i.e. when analyzing the load time using the Chrome event map, it shows that some tasks can spend multiple seconds waiting for ...
0
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0answers
62 views

Network Issues Connection to SQL database on MS server

Prior to asking this question, I followed this thread: Cannot telnet to SQL Server on port 1433 I am attempting to connect to a database on a server distinct from the computer upon which I am ...
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22 views

CustomLog responds but there are no output on client

So my friend had a server that responds incorrectly, for example this request: time curl -vv 'http://x.x.x.x/~a/fsocial/json_eod_per_code/PTBA-2014-2-c.json' * Hostname was NOT found in DNS cache * ...
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2answers
320 views

php pdo connection cannot be established, but mysql command line client can

situation as follows: php script on server a, run by user 'web' (nginx + php-fpm) should access mysql on server b via pdo library, but gets SQLSTATE[HY000] [2003] Can't connect to MySQL server on ...
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0answers
45 views

Connectivity issue when computer is on certain ip range

I am using mobile USB stick for internet connectivity. My connection works just fine, but I cannot access my computer from outside (internet) when I am on certain IP range. When my mobile stick gets ...
0
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1answer
84 views

unable to connect to nginx hosted website from most pcs, yet my local pc connects fine?

i run a website (remotely) using nginx and php, which has been ok for a long while. i recently changed the domain name to a new name and now most web browsers/pcs are unable to connect to the website. ...
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0answers
18 views

Limit connection per domain source [duplicate]

I would like to limit my http request for only one virtualhost on apache, is it possible to do this via iptables for only one virtualhost ? I prefer to do not use apache if it's possible for better ...
0
votes
1answer
148 views

ssh_exchange_identification Can't Access to SSH Amazon EC2 (Lock Out)

I get an error in terminal when I'm trying to access my instance in Amazon EC2. I use Centos 6.x server WHM/cPanel, i have access to WHM, but i DON'T have a complete access to FTP or SSH. ssh: ...
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1answer
90 views

Link rate between EMC DAE and HBA

I have a EMC DAE (KTN-STL4) drive cage directly connecconnected to a HP Proliant server using a QLogic QLE2560 HBA. I'm using copper cable between the HBA card and the DAE. On the controller card in ...
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1answer
724 views

IIS 8.0 Second Website on port 81 not visible publicly

I have been given a VM in Windows Azure with Windows Server 2008 R2/ IIS 8.0 running. It has a default website. Now I wanted to create a dev version of that site at some other port, say 81. I added ...
0
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0answers
31 views

Can Apache Web Server handle up to 100,000 concurrent connections? [duplicate]

Is it possible to configure Apache Web Server to handle up to 100,000 or more concurrent connections? I know if this were to be possible, it's definitely going to be resource intensive. In that ...
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votes
1answer
157 views

MySql - Lost /var/lib/mysql directory [closed]

So, the thing is that I was messing around with directories to backup and I delete the folder /var/lib/mysql and now i cant connect to my database gettin this error (I'm using plesk panel): ...
5
votes
1answer
626 views

Redis connection issue

We are currently experiencing a lot of Redis errors with the message Unable to connect: read error on connection, trying next server We run Redis on FreeBSD using PHP Redis and we have a hard ...
0
votes
2answers
556 views

Number of SSH connections rises, and blocks data?

We have a client server setup, where the client sets up an SSH tunnel and uses port forwarding to send data to the server: ssh -N -L 5000:localhost:5500 user@serveraddress The normal number of SSH ...
3
votes
1answer
428 views

BGINFO with MySQL for storing computer information

We are trying to set up BGinfo to record network computers' information in a centralized database. We intend to set up BGinfo to start up for all users and record logon and logoff time plus setting up ...
0
votes
1answer
76 views

Connecting two routers via serial

I'm new to Cisco and I wanted to connect two routers with serial connection. This is how my network looks now: Maybe I connected them wrong because when I try to ping from PC0 to either PC2 or PC3 ...
0
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1answer
63 views

Single computer cannot access servers

We have several servers running on our internal network. Our router's firewall has a redirect in place for some domains to these servers' ip addresses. This works nicely. However, we've run into a ...
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votes
1answer
35 views

Only allow a specific client to talk to a server

I have the following situation: have a server (ubuntu) running an application. I have a client (only the one client) requesting stuff from that server. To execute the requests, the client has to ...
0
votes
1answer
831 views

wget ftp connection failing after PASV command

In attempting to transfer all files from one web server ("source") to another ("destination"), the wget command is connecting via FTP, but cannnot proceed beyond the PASV command. I'm using an SSH ...
2
votes
3answers
122 views

Progressive video download in a classroom environment - how to determine bandwidth needed

Background: We need to deliver a video heavy e-learning course to a classroom of ~15 users. This video will be MP4 delivered via HTML5 video so progressive download. As from what I can gather you ...