HTTP stands for Hyper Text Transfer Protocol and is the protocol used to transfer information around the World Wide Web.

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Relay HTTP request through other servers and back

I have 6 Ubuntu cloud servers, which of one acts as a main Django deployment with an intranet and cronjobs. For the cronjobs I request data from different data-sources, that I want to go through the ...
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3answers
103 views

Can i set 443 as default web port which means it can only be accessed via https and no port 80

As title says, I want to set my apache to listen on 443, and will configure SSL. So, My Question is :- 1). Does that mean, i will not have port 80 or any other port which is no ssl ? 2). My site ...
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2answers
355 views

HTTP attack - Too many connections & TIME_WAIT

I am running CentOS 6 with http -2.2.15 Going under HTTP attack, i can see many http process running. > netstat -nat | awk '{print $6}' | sort | uniq -c | sort -n > 1 established) > ...
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58 views

Best effort (failover) HTTP proxy use in aptitude?

I was installing a new Ubuntu 13.10 (daily build) for testing, and came to the option of being able to configure an HTTP proxy server for aptitude. It's been a while since I've sat through an ...
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1answer
143 views

Server optimization for long running script [duplicate]

I have a system running on a remote VPS whose main feature is a long running script (it could run for about 10 hours, depending on the user input). The following are some of its features: Database ...
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4answers
2k views

Referer is passed from HTTPS to HTTP in some cases… How?

In theory browsers do not pass on referer information from HTTPS to HTTP sites. And in my experience this has always been true. But I just found an exception, and I want to understand why it works so ...
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1answer
172 views

HTTPS shows website correctly, HTTP shows IIS start page

Just setup a new VPS server and am migrating a few clients to it from my dedicated server. The new VPS server is Win Server 2008 with IIS7. For some reason, when you go to http version using the ip, ...
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66 views

Intelligent, Location Dependent DNS

I'm new to complex network infrastructure but I'm quickly realizing that we're outgrowing our centralized load balanced cluster. The way we have things setup right now means that in order to add a ...
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52 views

How do I turn on port forwarding with Ubuntu?

$ssh -f -N -D 0.0.0.0:80 localhost Permission denied (publickey). I don't have anything in my ~/.ssh directory. I'm logged in as root.
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69 views

Redirection on Apache (Maintain POST params)

I have Apache installed on my server and I need to redirect from http to https. The reason for this is our load balancer solution cannot hand https so requests come in on http and then we transfer ...
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0answers
26 views

Evaluating and redirecting http requests

I am trying to evaluate traffic on port 80 to determine whether or not if we need to redirect a request, or pass it through, while being transparent. Scenario: User connects to our system via Wifi. ...
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1answer
74 views

Network traffic shaping, understanding if a video is being watched from Facebook [closed]

I am tring to determine which web sites are being used, how frequently they are being used, how much data transfer occurs etc.., in my company network . Now my problem when someone is watching a ...
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1answer
84 views

How to set up https only on one directory of VirualHost

I have VPS with several sites and applications, and I want to run MySQL administration tool over https to avoid possibility of man-in-the-middle attack, since I often have to use mysql root password. ...
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1answer
87 views

How should a HTTP server treat requests that specify a protocol higher than HTTP/1.1?

I have created a HTTPS server from scratch for use in an embedded application. At present it is able to distinguish between HTTP/1.0 and HTTP/1.1 when it receives a request, and it then subsequently ...
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1answer
66 views

Unable to setup HTTP Server so that external clients can access

I am running Red Hat Enterprise Server 6. It has Apache Server (httpd) installed and running on boot by default. My document files are kept in /var/www/html/web and I can access them on my computer ...
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913 views

Apache, ISPConfig3 & https to http redirection bug

I'm having a curious problem. Since my server got no SSL certificate and I want to avoid the ugly "This site is unsecure" warning, I decided to redirect https to http. I have my website, lets say ...
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2answers
1k views

Why are DNS lookups not respecting /etc/nsswitch.conf & /etc/host.conf?

I have an issue where hostnames are being looked up from DNS even though they are present in /etc/hosts. I have the following configured: /etc/host.conf: order hosts,bind /etc/nsswitch.conf: ...
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1answer
184 views

Why does my load balancer add the header “Via 1.1 localhost.localdomain”

My load balancer (a Rackspace Cloud Load Balancer instance) adds the Via header with these values: Via 1.1 localhost.localdomain What does this mean and is it harmful? Note: According to another ...
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128 views

On my virtual EC2 instance, what is my IP will a webpage detect if I curl it?

I have one small server on EC2. Let's say I cURL facebook.com. What IP will facebook see as the "client address"? Is it random?
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1answer
110 views

Stange stream of HTTP GET requests in apache logs, from amazon ec2 instances

I just had a look at my apache logs, and I see a lot of very similar requests: GET / HTTP/1.1 User-Agent: curl/7.24.0 (i386-redhat-linux-gnu) libcurl/7.24.0 \ NSS/3.13.5.0 zlib/1.2.5 libidn/1.18 ...
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2k views

s3put fails with “Connection reset by peer” for large files

I can upload small files quite fine using the same commands, however whenever I try to upload a 5 GB file to S3 then the s3 script fails: [backup]$ s3put --bucket john-murdoch-bucket --reduced ...
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2answers
170 views

ColdFusion Server crash after thousands of HTTP requests

We are running ColdFusion 8 on a windows server 2003 VPS with an API that exposes student records to a partner API through a connector. Our API returns around 50k student records serialized in XML ...
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2answers
558 views

Allow non-root process to listen on port 80 without doing anything drastic

For reasons beyond my comprehension, GlassFish refuses to play ball with iptables. That is, with all the correct redirection rules in place, it won't receive any redirected traffic. So I'm at plan B ...
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2answers
267 views

Can I use SSL termination for sensitive data, and if not what is the point of even using SSL with termination?

I have read, namely on Rackspace, that one should not use SSL termination for sensitive information (search the page for "SSL Termination should not be used"). Firstly, why would that be the case. ...
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213 views

Redirect from HTTP to HTTPS with respect to the X-Forwarded-For header (SSL termination used)

I'm looking to redirect from HTTP to HTTPS. My Nginx server sits behind a load balancer which will terminate SSL for me and send all traffic (HTTP and HTTPS) to port 80. The only evidence I will have ...
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1answer
168 views

Server responds to pings but no SSH or HTTP access

I do not know what has caused this but my websites have been down for 2+ days now and I cannot connect via SSH or FTP either. The only way to get signs of life from my server is to reboot it via the ...
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1answer
596 views

How stop nginx to listen to port 80

I want nginx to stop listen to port 80. I only found people with bugs but no doc about doing it on purpose. I can't disable it, and I read too : #listen 80; ## listen for ipv4; this line is default ...
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1answer
347 views

Apache AB (ApacheBench) : -no-check-certificate option available?

It seems there is no option to avoid this error : "Verify return code: 20 (unable to get local issuer certificate)". Is there a way to avoid issuer ssl check with AB (like wget's -no-check-certificate ...
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270 views

stunnel: redirect HTTP traffic to HTTPS

Is it possible for stunnel to detect non-SSL requests and issue a redirect to HTTPS URL? Or maybe it's possible to have stunnel mark these requests somehow and let the underlying app issue the ...
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0answers
76 views

How to prevent HTTP-based DDoS attacks [duplicate]

This night, I've noticed nginx was not responding to requests. After some investigation, I found that it was using 100% of the CPU and error.log was full of messages like this one: 2013/05/28 ...
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1answer
118 views

How do iptables ports work? [closed]

Let's say, for instance, a user on the network makes a HTTP request to http://serverfault.com. I believe the destination port (dport) in this case is 80. What is the source port (sport)? If the user ...
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107 views

Configure IIS To Send “text/html” In Response for IE11

The updated version of Internet Explorer in Windows 8.1, IE11, has the following User Agent string as per this: Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko Our website is ...
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180 views

Malformed nginx 307 redirect response?

I have an Nginx configuration that 307 redirects from http to https. There are existing client applications that connect to http and send data via POST requests. The clients are .Net services using ...
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2answers
591 views

Alternatives to wireshark? [closed]

What would be a good option to troubleshoot an interaction of browser with a server besides wireshark? I mean being able to see what the browser sends and receives. Is firebug a good alternative or is ...
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54 views

Some traffic doesn't show up when using an HTTP Proxy

I use the Charles HTTP Proxy to watch traffic from mobile apps on my computer. Some traffic does not appear at all in the proxy, though, and I don't know enough about networking to know why. For ...
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126 views

Apache server reached MaxClients setting

I'm using Apache/2.2.15 (Unix) in CentOS release 6.3 (Final) 2.6.32-279.1.1.el6.x86_64. I have some HTTP requests from specific referer with diferrent ip adresses and i want to block these requests ...
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1answer
267 views

Plotted ab results of node, cluster and nginx, odd results?

I did a test with ab -n 10000 -c 1000 against node.js with different configurations, each returning the string Hello World!. Results seems odd to me. X axis is the number of requests, y is the ...
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1answer
193 views

Making Nginx send 4xx/5xx errors from PHP-FPM

I have Nginx setup to reverse proxy all files ending in .php. In some scripts, I check for parameters and send "406 Not Acceptable" as a generic error which needs to be picked up on jQuery/from Ajax. ...
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1answer
28 views

Add logging to HTTP server on runtime

Sometimes we have an HTTP server running where you can see that it starts to act out. Without restarting it I want to start to log all HTTP requests. Are there any tools that allows you to add some ...
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0answers
408 views

short Apache outages (VPS, ModSecurity)

I have a problem with my site recently hosted at Liquidweb, none of their techs seems to be able to solve this issue even after days. Was hoping I could get some help here. Occasionally, my site's ...
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1answer
117 views

Browser prematurely closes connection

I am working on a legacy system where an intermittent problem keeps happening at what seems to be times where there is a lot of load on the network. I am using IE6 to access a webpage generated by a ...
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2answers
891 views

Wireshark does not capture HTTP on 8080

I am running Wireshark on my linux machine and i have simple python web server running on localhost:8080 I am capturing only local port 8080. When i open browser on localhost:8080 wireshark captures ...
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1answer
208 views

Exclude Specific Pages From HTTP headers

I am just an html and css guy, so please forgive me if my question isn't worded correctly. I set http headers in the .htaccess file to disable caching for my site, and it works fine. But now I want to ...
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1answer
53 views

Are empty HTTP requests malicious?

I have seen multiple empty http request log entries from Apache: HOST:443 REMOTEIP - - [DATA AND TIME] "-" SIZE SIZE "-" "-" Are these malicious attacks, or some misconfiguration on my side?
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81 views

Forwarding all HTTP/HTTPS traffic to a port with iptables

I'm trying to setup a wireless network that routes all traffic to a local webserver (basically a hotel wifi login page). Here's my dhcpd config: $ cat /etc/dhcpd.conf ddns-update-style none; ...
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158 views

How do I change the format of Apache HTTP Indices?

For instance, this index: http://howto.unixdev.net/ Differs from this index: http://gcc.petsads.us/ How do I change the format of the indices for my web server?
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176 views

Apache tomcat server win8 cannot be accessed outside of local host

I have installed the apache-tomcat server on my local win7. The port I specified is 9999. Additionally, I use the distributed binary version of apache tomcat. Not installing as a windows service. I ...
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2answers
3k views

Human readable format for http headers with tcpdump

I would like to view the HTTP headers sent from Apache (listening on port 80) to Tomcat (on port 4080) in a Linux machine. According to Wikipedia, Header fields are colon-separated name-value ...
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1answer
77 views

How to forbid HTTP TRACE in lighttpd

In a recent PCIDSS scan at a client of mine, I got aware of Web Server HTTP Trace/Track Method Support Cross-Site Tracing Vulnerability (CVE-2004-2320, CVE-2007-3008). The proposed mitigation for ...
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217 views

trouble with github behind Varnish caching servers

We are a development team in Europe (Berlin to be precise) that heavily depends on the availability of raw.github.com. Our CI server way to often (sometime in 50% of all cases) reports failed builds ...