Questions tagged [headers]
Probably not the tag you want, please use something more specific like http-headers or smtp-headers.
71
questions
14
votes
1
answer
47k
views
proxy_set_header not working
/etc/nginx/sites-available/default
server {
listen 80 default_server;
listen [::]:80 default_server ipv6only=on;
root /usr/share/nginx/html;
index index.html index.htm;
# Make ...
- 183
9
votes
1
answer
26k
views
Chrome DevTools - Request Header Size
Is there a way to get the total size (in bytes) of the request header that the browser is sending to the server for each request?
- 191
8
votes
2
answers
7k
views
Cant connect to S3 with nginx
I'm trying to serve static and media files from the amazon S3 bucket but Nginx can't connect to it
Here is the error I get
<Error>
<Code>AccessDenied</Code>
<Message>
AWS ...
- 181
4
votes
1
answer
7k
views
HAProxy - Add response header based on request host
I have a HAProxy set up to redirect traffic to a few internal servers.
What I'm trying to do is to set some response headers, based on the request host. Unfortunately I can't get it to work.
Current ...
- 55
4
votes
1
answer
3k
views
Add proxy headers in named location using nested location regex
I'm trying to setup a WebSocket endpoint on my Rails API using Nginx and Puma.
What I have (working but ugly)
The following Nginx configuration works fine, however I feel like I could use something ...
- 271
4
votes
1
answer
7k
views
How to override "Content-Type" header with PHP script on Nginx
I have some php script which returns jpeg image(1x1 pixel) with content type "image/jpeg":
// return image
$image_name = 'img/pixel.jpg';
$image = fopen($image_name, 'rb');
header('Content-Length: ' ....
4
votes
1
answer
1k
views
HTTP Debug method reveals Server header on IIS
Stuck with really weird problem and can't figure out how to handle it. So, I have asp web api application hosted in IIS 10. I use IIS Rewrite module with outbound rule which removes any Server header:
...
- 141
3
votes
1
answer
760
views
Need help determining origin of spam email
As a quick background we have spam that is being sent out with our domain name. As a result we have added SPF record to our domain DNS, now obviously this will assist in making sure this spam is not ...
3
votes
1
answer
5k
views
Nginx on CentOS: How can I change the "Server" header?
I'm running Nginx on Centos6.
For security reasons I'd like to change/remove the Server HTTP header contained in the response headers.
For instance,nginx's default Sever header looks like:I'm ...
- 31
3
votes
1
answer
1k
views
Set environment variables from header for Ruby/Rails app hosted in Nginx/Passenger
I installed a server for Redmine, running with Nginx/Passenger. The server also hosts Gitlab and it goes well.
I put some kind of SSO plugin for Redmine (which I found and installed) and it needs an ...
- 31
2
votes
3
answers
505
views
Is TCP header the same as TCP segment?
So, is a TCP header actually the same thing as a TCP segment? I was reading this page,
where it reads near the end that:
Even though it might seem they are, in most cases, when referring to
the ...
- 145
2
votes
0
answers
433
views
Why is CloudFront failing to pass a header from the origin to the client?
I have CloudFront configured with an API Gateway origin. In the application accessed via API Gateway, my application responds to a particular request with a Content-Disposition header so that the data ...
- 201
2
votes
0
answers
1k
views
Nginx proxy_pass loses headers when using http2
I've encoutered a problem with nginx losing headers to backend when using http2 protocol on nginx(regular http to Wildfly 10 backend). The below config works when taking the http2 parameter away and ...
- 21
2
votes
0
answers
257
views
Use different client IPs with mod_rewrite and mod_remoteip
I have a reverse proxy that my site points to to help with DDoS protection. I have mod_rewrite set to use a specific header provided by the reverse proxy in order to pull the actual client IPs instead ...
- 31
1
vote
2
answers
3k
views
Postfix swallows Bcc header
I use the postfix 2.9.6 and use a milter to read the contents for my application. I am seeing Postfix swallows Bcc: header from the incoming emails and my milter missed just that Bcc header. Is there ...
- 149
1
vote
2
answers
3k
views
Is it possible to fix corrupt LUKS header?
I just accidentally overwrote the LUKS metadata of my volume with a new LVM header. I have copy of the original LUKS header but can't find it. Just in case, I made a dd image of the first 10MB of the ...
- 11
1
vote
1
answer
484
views
LUKS Header - 30kB mysteriously missing
I have a disk containing (only) a LUKS encrypted volume. That was created on a bare drive with no partition table using cryptsetup v.1.6.1. When unlocked, I can check the size of the decrypted ...
- 246
1
vote
1
answer
2k
views
Linux header 4.9.0-11-amd64 is missing in debian
I am a software developer and have only a basic understanding about Linux systems. We are in a migration phase from GCP to AWS and found that the Linux headers are missing while installing Cloud ...
1
vote
1
answer
2k
views
Postfix header_check regex with if conditional not matching - change sender address when recipient domain matches
I have a header_check that should match when the RECIPIENT address is domain.com and if it matches, then it changes the SENDER address to [email protected]
Scratching my head a little on this....
- 43
1
vote
1
answer
1k
views
set header in .htaccess not working if REQUEST_URI contains a word
I need to set some headers if REQUEST_URI contains the "compile" word.
My uri is:
http://myurl/compile/123456/123456?token=myvalue
This is the code in the .htaccess that DOES NOT work:
Header ...
- 131
1
vote
2
answers
5k
views
Redirect real IP client nginx
How to send to proxied server the real ip of client?
My settings are:
server {
listen 80;
server_name foo.example.com;
location / {
proxy_pass http://someip;
proxy_set_header Host $host;
...
1
vote
1
answer
8k
views
Keeping Headers During NGINX Rewrite
I am attempting to set up an NGINX proxy to redirect all requests to one of two servers based on the contents of a query string argument. Essentially:
https://my.site.com/api/...&server=a
...
- 131
1
vote
1
answer
5k
views
Removing one cookie in proxy_pass of nginx
I'm trying to proxy_pass the whole request coming to my nginx to certain base URL to another upstream server removing server cookie. All other cookies, HTTP headers, the URL itself should be kept as ...
- 59
1
vote
1
answer
7k
views
setup SameSite=none value in Nginx webserver
I need to setup SameSite=none value in Nginx webserver
In case of using Nginx as main webserver and non reverse proxy will the below configuration work?
Inside server block
location {
...
- 11
1
vote
1
answer
233
views
Postfix MTA - Match string in header fields
I'm trying to block some spammer by filtering some fields in the mail header, but it isn't working. The spammer is adding random domains in the headers, but the "user" is always the same, like this: ...
- 55
1
vote
1
answer
1k
views
Ignoring forwarder IP in syslog-ng
We are getting syslog-ng feeds from a forwarder that we don't control.
The issue is that they are using an older version (RHEL 6), and while they have keep_hostnames set to 'yes' (chain_hostnames to '...
- 161
1
vote
1
answer
1k
views
Is https preventing a proxy from adding x-forward-for header?
I'm trying to troubleshoot an issue for a user of my service https://jsonip.com.
Last week I enabled forcing 301 redirects for all http to https connections.
The user I'm trying to help now was ...
- 647
1
vote
1
answer
263
views
Doctype xml version definition
W3C DTD instructions include the following as the very first line of a (X)HTML document:
<?xml version="1.0" encoding="utf-8"?>
I acknowledge the importance of the DOCTYPE declarations that ...
- 326
1
vote
0
answers
398
views
Configuring postfix to use SendGrid SMTP relay with fixed FROM address but need to append REPLY-TO of original sender
I have been trying to resolve for a couple of months using multiple different configurations.
The local delivery to a Dovecot mailbox ([email protected]) keeps the original sender (sender@gmail....
- 11
1
vote
0
answers
411
views
Apache: Setting response headers based on the existence of multiple response headers
We are attempting to enforce a set of non-cache headers in cases where a reverse proxy does not return any cache headers, in an effort to allow independent backend developers to set headers as they ...
1
vote
0
answers
685
views
Apache2 - Header directives are not working
I would like to enhance the security of my server, so I'm following a guide regarding server security. I'm new to the subject, therefore there are many things I struggle to understand and there is ...
- 113
1
vote
0
answers
3k
views
Why doesn't nginx proxy_hide_headers directive work in this case?
I have an nginx server block like this, and I am trying to use the proxy_hide_header directive to hide the Content-Security-Policy response header from the proxied server because I am not running an ...
- 253
1
vote
1
answer
191
views
X-XSS-Protection header not set for the HTML document even that it is enabled in config file
I enabled the X-XSS-Protection header in the web.config file:
<httpprotocol>
<customheaders>
<remove name="X-Powered-By" />
<add name="X-XSS-Protection" ...
- 11
1
vote
1
answer
2k
views
Users with Google Proxy IPs
On my website, we log user IPs to ensure we're able to properly moderate and prevent abuse.
We are aware of Proxies, such as Opera VPN, Tor, and others.
However, I am not aware of Google itself having ...
- 653
1
vote
0
answers
56
views
Office365 removes mail headers before send
We're sending mails using c# Mail library, we need to send specific headers to track them through external providers. We've tried some months ago and it worked, but now trying again before deploying ...
- 111
1
vote
1
answer
4k
views
add_header 'Cache-Control' working only without location context
I've installed nginx/1.10.3 (Ubuntu) and changed the original config file so that it is only slightly different at the top of the http context:
http {
add_header 'Cache-Control' 'no-cache';
and ...
- 11
1
vote
1
answer
647
views
Which headers take precedence -- the ones set by Nginx or the application server's?
I'm using Nginx on CentOS with a Rails server. I'm confused about how headers get set. If Nginx sets headers and the applicatino server (Ruby on Rails in this case), which one wins out? I have this ...
- 224
1
vote
0
answers
1k
views
Haproxy Nginx : How not to forward the local port?
I have haproxy which listening on ports 80 and 443 and behind Nginx listening locally on ports 8000, 8001, 8002 etc...
By default, all works fine but when an application web made a redirect 301, it ...
- 66
0
votes
2
answers
191
views
Files and their headers? [closed]
(I'm a dos guy , I always liked to view files in norton commander and see inside stuff etc)
however over the years I've noticed that each file(well , most of) ( binary files ) has header :
For ...
- 137
0
votes
2
answers
967
views
Block all requests except certain header
I'm using CloudFlare in a shared environment and I'm trying to help block non-CloudFlare users who circumvent to my origin IP. Loading up the web page I see the header server: "cloudflare". So I ...
- 11
0
votes
3
answers
447
views
UDP pseudoheader
Is it true that in the UDP header 2 bytes store a checksum for verification purposes by the destination host, and that this checksum is generated from a pseudoheader? If this is true, then why does a ...
- 375
0
votes
1
answer
614
views
Postfix header_checks with multi-line headers and capture group
We have a header_checks regexp passed to the "cleanup" process, but it's not processing the header as a single header if it's on multiple lines.
header_check (pass value of header to FILTER):...
- 103
0
votes
2
answers
18k
views
How to add http host header in URL?
I have web app deployed in K8 in aws & configured LoadBalancer to call the same from internet.
In the Postman I call like ,
GET https://myteams.myorg.net/config
Headers: Host doom.myteams.myorg....
- 1
0
votes
1
answer
160
views
Multipart text/html email from Invision Community not parsing correctly [closed]
First of all, yes I have contacted Invision Community support. Yes, I am a paying user with an active license. We went back and forth for several hours and all they have to say is there's nothing ...
- 11
0
votes
1
answer
4k
views
Alter Nginx reverse proxy cache header from Public to Private
I have an Nginx cache server getting content from an origin server, the origin server sets Cache-Control to Public so my Nginx cache server can cache the content and make less requests to origin. But ...
- 1,169
0
votes
2
answers
4k
views
add_header not working in Nginx location
So, I've been trying to figure this out for the past 8 hours, but it seems I'm stuck...
I have the following Nginx config file:
server_tokens off;
upstream php-handler {
server unix:/var/run/php5-...
- 268
0
votes
1
answer
2k
views
Pros/Cons to disabling HEAD requests with Nginx?
I have a static blog/site and I'm wondering if there are any negative implications of disallowing/disabling HEAD requests within my Nginx conf? For example: would it break the site with certain web ...
0
votes
2
answers
113
views
apache2 can not set REMOTE_ADDR or any other var as header
i trying to setup apache as a reverse proxy and i need to add e.g. the REMOTE_ADDR and some other values as an header (required by the backend), for some reason always "null" is set.
...
- 1
0
votes
0
answers
107
views
Ubuntu Apache2 mod headers - not adding
I have an ubunutu server with apache2 server and I need to add a custom header to every request. This seems very straightforward, but it's not adding the header.
I have enabled the module headers with ...
- 73
0
votes
0
answers
111
views
comparing __FILE__ with $_SERVER['SCRIPT_FILENAME'] before sending header
I am new to PHP, I saw a code which has the following lines, what is the code trying to de here.
if (basename(__FILE__) === basename($_SERVER['SCRIPT_FILENAME'])) {
header("Location: https://...
