Home / user-50391

Eamorr's questions

Martin Hope
Eamorr
Asked: 2013-08-27 00:42:17 +0800 CST
  • 0

Please bear with me while I try to explain some htaccess gymnastics I'd like to perform.

I have this domain: eamorr.somesite.com, at 192.168.100.100.

It is serving pages from my public_html folder as expected.

Now, I want to use the following address:

www.somesite.com/eamorr

I do not have control over www.somesite.com (192.168.99.99), however my sysadmin has allowed me to place a .htaccess file in the eamorr folder. I am not allowed, under any circumstances, to place anything else in the eamorr folder for reasons I do not know.

What I want to happen is this:

User navigates to www.somesite.com/eamorr/some_page.php

User is fed some_page.php from eamorr.somesite.com/some_page.php (i.e. 192.168.100.100/some_page.php).

I'd like this to be as seamless as possible -- i.e. when a user navigates to http://www.somesite.com/eamorr/some_page.php they get served some_page.php and are oblivious to the fact that some_page is coming from a different server (192.168.100.100)

http://www.somesite.com/eamorr should be in the address bar of the user's browser at all times and not http://eamorr.somesite.com -- my boss "just wants it that way"...

Is this possible to do using .htaccess?

apache-2.2
Martin Hope
Eamorr
Asked: 2013-02-27 02:53:23 +0800 CST
  • 1

I'm behind a firewall and only have access to ports 80 and port 443.

How can I sync my system's clock?

Here's the command I issue:

sudo ntpdate -u 1.debian.pool.ntp.org

But I keep getting the following error:

no server suitable for synchronization found.

Is there some other program that can sync over port 80/443? Or is it possible to get ntpdate to work on these ports?

Many thanks in advance,

linux
Martin Hope
Eamorr
Asked: 2012-02-19 09:05:03 +0800 CST
  • 13

I have nginx running on port 81. I can telnet using telnet 127.0.0.1 81 and everything is fine.

But when I try to telnet to my machine from my Mac (an external IP address), I just get this error:

telnet: connect to address 109.123.x.x: Connection refused
telnet: Unable to connect to remote host

Here is my /etc/nginx/sites-available/default file:

server {
        listen   81; ## listen for ipv4; this line is default and implied
        #listen   [::]:80 default ipv6only=on; ## listen for ipv6

        root /usr/share/nginx/www;
        index index.html index.htm;

        # Make site accessible from http://localhost/
        server_name 109.123.x.x;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to index.html
                try_files $uri $uri/ /index.html;
        }
        ...

I've opened Ubuntu Firewall (ufw) to allow port 81.

I'm totally stuck now.

Anyone have any ideas?

ip ip-address nginx
Martin Hope
Eamorr
Asked: 2011-09-26 05:33:31 +0800 CST
  • -1

My ErrorDocument redirect doesn't appear to be working!

Here is the bottom of my sites-available file:

    ...
    </Directory>

        ErrorLog /var/log/apache2/error.log

        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
        LogLevel warn

        CustomLog /var/log/apache2/access.log combined

        ErrorDocument 403 /403.php
        ErrorDocument 404 /404.php
</VirtualHost>

If you go to 109.123.109.205/404.php, the error page appears correctly, however, when you go to 109.123.109.205/asdf.php, I just get the bog standard 404 error...

Any insight greatly appreciated,

apache-2.2 errordocument
Martin Hope
Eamorr
Asked: 2011-09-09 06:11:58 +0800 CST
  • 0

I have the following in my .htaccess file:

<Directory /home/eamorr/sites/example.com/www>
                Options Indexes FollowSymLinks MultiViews
                Options -Indexes
                AllowOverride all
                Order allow,deny
                allow from all

                RewriteEngine on
                RewriteRule ^([^/.]+)/?$ index.php?uname=$1 [R,L]
</Directory>

When I go to http://example.com/Eamorr, http://example.com/home/eamorr/sites/example.com/www/index.php?uname=Eamorr appears in the address bar!

But I want http://example.com/index.php?uname=Eamorr to appear in the address bar!!!

(I need to parse the URL in javascript in index.php)

apache-2.2 rewrite mod-rewrite
Martin Hope
Eamorr
Asked: 2011-09-08 14:06:59 +0800 CST
  • 1

I have a domain, example.com.

Here is my apache2 ReWrite rule:

RewriteEngine on
RewriteRule ^([^/.]+)/?$ index.php?uname=$1 [L]

When I go to http://example.com/Eamorr, http://example.com/Eamorr appears in the address bar of my browser.

I want http://www.example.com/index.php?uname=Eamorr to appear in the address bar! (my javascript needs to parse the GET arguments)

Is this possible?

Many thanks in advance,

apache-2.2 rewrite mod-rewrite
Martin Hope
Eamorr
Asked: 2011-07-16 03:55:58 +0800 CST
  • 7

I'm trying to use tcpdump on the DEFCON packets.

Here's the command I'm using:

tcpdump -qns 0 -X -r ulogd.eth0.pcap

And here's the output I'm getting:

10:39:12.356410 IP 192.168.103.2.3101 > 192.168.102.2.80: tcp 0
    0x0000:  4500 0028 0557 4000 7f06 a823 c0a8 6702  E..(.W@....#..g.
    0x0010:  c0a8 6602 0c1d 0050 2463 0fbe 8854 e419  ..f....P$c...T..
    0x0020:  5010 4296 71ec 0000                      P.B.q...
10:39:27.223199 IP 192.168.103.2.3101 > 192.168.102.2.80: tcp 52
    0x0000:  4500 005c 055e 4000 7f06 a7e8 c0a8 6702  E..\.^@.......g.
    0x0010:  c0a8 6602 0c1d 0050 2463 0fbe 8854 e419  ..f....P$c...T..
    0x0020:  5018 4296 0d82 0000 4745 5420 2f2f 726f  P.B.....GET.//ro
    0x0030:  756e 6431 3832 2e78 6d6c 2048 5454 502f  und182.xml.HTTP/
    0x0040:  312e 310d 0a48 6f73 743a 2031 3932 2e31  1.1..Host:.192.1
    0x0050:  3638 2e31 3032 2e32 0d0a 0d0a            68.102.2....
10:39:27.224154 IP 192.168.102.2.80 > 192.168.103.2.3101: tcp 474
    0x0000:  4500 0202 90d3 4000 3f06 5acd c0a8 6602  E.....@.?.Z...f.
    0x0010:  c0a8 6702 0050 0c1d 8854 e419 2463 0ff2  ..g..P...T..$c..
    0x0020:  5018 16d0 6b2f 0000 4854 5450 2f31 2e31  P...k/..HTTP/1.1
    0x0030:  2034 3034 204e 6f74 2046 6f75 6e64 0d0a  .404.Not.Found..
    0x0040:  4461 7465 3a20 4d6f 6e2c 2030 3420 4175  Date:.Mon,.04.Au
    0x0050:  6720 3230 3033 2030 393a 3339 3a32 3720  g.2003.09:39:27.
    0x0060:  474d 540d 0a53 6572 7665 723a 2041 7061  GMT..Server:.Apa
    0x0070:  6368 652f 312e 332e 3236 2028 556e 6978  che/1.3.26.(Unix
    0x0080:  2920 4465 6269 616e 2047 4e55 2f4c 696e  ).Debian.GNU/Lin
    0x0090:  7578 0d0a 5472 616e 7366 6572 2d45 6e63  ux..Transfer-Enc
    0x00a0:  6f64 696e 673a 2063 6875 6e6b 6564 0d0a  oding:.chunked..
    0x00b0:  436f 6e74 656e 742d 5479 7065 3a20 7465  Content-Type:.te
    0x00c0:  7874 2f68 746d 6c3b 2063 6861 7273 6574  xt/html;.charset
    0x00d0:  3d69 736f 2d38 3835 392d 310d 0a0d 0a31  =iso-8859-1....1
    0x00e0:  3137 0d0a 3c21 444f 4354 5950 4520 4854  17..<!DOCTYPE.HT
    0x00f0:  4d4c 2050 5542 4c49 4320 222d 2f2f 4945  ML.PUBLIC."-//IE
    0x0100:  5446 2f2f 4454 4420 4854 4d4c 2032 2e30  TF//DTD.HTML.2.0
    0x0110:  2f2f 454e 223e 0a3c 4854 4d4c 3e3c 4845  //EN">.<HTML><HE
    0x0120:  4144 3e0a 3c54 4954 4c45 3e34 3034 204e  AD>.<TITLE>404.N
    0x0130:  6f74 2046 6f75 6e64 3c2f 5449 544c 453e  ot.Found</TITLE>
    0x0140:  0a3c 2f48 4541 443e 3c42 4f44 593e 0a3c  .</HEAD><BODY>.<
    0x0150:  4831 3e4e 6f74 2046 6f75 6e64 3c2f 4831  H1>Not.Found</H1
    0x0160:  3e0a 5468 6520 7265 7175 6573 7465 6420  >.The.requested.
    0x0170:  5552 4c20 2f2f 726f 756e 6431 3832 2e78  URL.//round182.x
    0x0180:  6d6c 2077 6173 206e 6f74 2066 6f75 6e64  ml.was.not.found
    0x0190:  206f 6e20 7468 6973 2073 6572 7665 722e  .on.this.server.
    0x01a0:  3c50 3e0a 3c48 523e 0a3c 4144 4452 4553  <P>.<HR>.<ADDRES
    0x01b0:  533e 4170 6163 6865 2f31 2e33 2e32 3620  S>Apache/1.3.26.
    0x01c0:  5365 7276 6572 2061 7420 7363 6f72 652e  Server.at.score.
    0x01d0:  726f 6f74 6675 2e6a 7020 506f 7274 2038  rootfu.jp.Port.8
    0x01e0:  303c 2f41 4444 5245 5353 3e0a 3c2f 424f  0</ADDRESS>.</BO
    0x01f0:  4459 3e3c 2f48 544d 4c3e 0a0d 0a30 0d0a  DY></HTML>...0..
    0x0200:  0d0a                                     ..
10:39:27.406315 IP 192.168.103.2.3101 > 192.168.102.2.80: tcp 0
    0x0000:  4500 0028 055f 4000 7f06 a81b c0a8 6702  E..([email protected].
    0x0010:  c0a8 6602 0c1d 0050 2463 0ff2 8854 e5f3  ..f....P$c...T..
    0x0020:  5010 40bc 71b8 0000                      [email protected]...

I'm not interested in the stuff to the left (hex representations and the IP addresses). I just want the content. Also, what are all those dots?

linux ubuntu tcpdump
Martin Hope
Eamorr
Asked: 2011-07-02 05:17:07 +0800 CST
  • 1

I hope someone can follow this and I'll explain as best I can.

I'm trying to forward all traffic from port 6999 on x.x.x.224, through an ssh tunnel, and onto port 7000 on x.x.x.218.

Here is some ASCII art:

|browser|-----|Squid on x.x.x.224|------|ssh tunnel|------<satellite link>-----|Squid on x.x.x.218|-----|www|
         3128                      6999                          7000                                80

When I remove the ssh tunnel, everything works fine.

The idea is to turn off encryption on the ssh tunnel (to save bandwidth) and turn on maximum compression (to save more bandwidth). This is because it's a satellite link.

Here's the ssh tunnel I've been using:

ssh -C -f -C -o CompressionLevel=9 -o Cipher=none [email protected] -L 7000:172.16.1.224:6999 -N

The trouble is, I don't know how to get data from Squid on x.x.x.224 into the ssh tunnel? Am I going about this the wrong way? Should I create an ssh tunnel on x.x.x.218? I use iptables to stop squid on x.x.x.224 from reading port 80, but to feed from port 6999 instead (i.e. via the ssh tunnel). Do I need another iptables rule?

Any comments greatly appreciated.

Many thanks in advance,

Regarding Eduardo Ivanec's question, here is a netstat -i any port 7000 -nn dump from x.x.x.218:

14:42:15.386462 IP 172.16.1.224.40006 > 172.16.1.218.7000: Flags [S], seq 2804513708, win 14600, options [mss 1460,sackOK,TS val 86702647 ecr 0,nop,wscale 4], length 0
14:42:15.386690 IP 172.16.1.218.7000 > 172.16.1.224.40006: Flags [R.], seq 0, ack 2804513709, win 0, length 0

Update 2:

When I run the second command, I get the following error in my browser:

ERROR
The requested URL could not be retrieved

The following error was encountered while trying to retrieve the URL: http://109.123.109.205/index.php

Zero Sized Reply

Squid did not receive any data for this request.

Your cache administrator is webmaster.


Generated Fri, 01 Jul 2011 16:06:06 GMT by remote-site (squid/2.7.STABLE9)

remote-site is 172.16.1.224

When I do a tcpdump -i any port 7000 -nn

I get the following:

root@remote-site:~# tcpdump -i any port 7000 -nn  
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode 
listening on any, link-type LINUX_SLL (Linux cooked), capture size 65535 bytes 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused
channel 2: open failed: connect failed: Connection refused 
channel 2: open failed: connect failed: Connection refused
linux command-line-interface ssh iptables tunneling
Martin Hope
Eamorr
Asked: 2011-06-17 01:45:23 +0800 CST
  • 0

I have two boxes: 172.16.1.224 and 172.16.1.223.

Both are running Squid. I connect my browser to x.x.x.224, port 3128 using Firefox proxy settings. That works fine. If I connect my browser to x.x.x.223:3128 using Firefox proxy settings, it works fine.

Now, I'm trying to bridge the two boxes, such that when I connect o x.x.x.224:3124 using Firefox proxy settings, traffic gets routed to x.x.x.223 and then on to the web.

Any ideas on how I might do this? I'm struggling with iptables.

Many thanks in advance,

squid iptables
Martin Hope
Eamorr
Asked: 2011-06-14 01:19:58 +0800 CST
  • 0

I'm trying to setup Squid and am having great difficulty (I'm new to all this). Basically, I have a VirtualBox machine which I can ssh in to ([email protected]). I want this machine (192.168.56.101) to act as a transparent Squid caching server for my host machine.

If anyone could point me in the right direction, it would be most appreciated. Many thanks in advance,

proxy squid
Martin Hope
Eamorr
Asked: 2011-02-05 14:32:59 +0800 CST
  • -1

Greetings,

I have an apache2 server with 4 domain names point to my server's single IP address.

When I type in www.site1.com it serves pages from /home/eamorr/site1/index.php Same for www.site2.com, www.site3.com and www.site4.com

However, when I type in to the address bar of a browser without the www, it always redirects to site1.com!

i.e.

site1.com -> site1.com site2.com -> site1.com site3.com -> site1.com site4.com -> site1.com

How do I configure apache to do the following:

site1.com -> site1.com site2.com -> site2.com site3.com -> site3.com site4.com -> site4.com

Here is my default config:

ServerAdmin [email protected] ServerName www.site1.com

    DocumentRoot /home/eamorr/sites/site1.com/www
    DirectoryIndex index.php index.html

    <Directory /home/eamorr/sites/site1.com/www>
            Options Indexes FollowSymLinks MultiViews
            Options -Indexes
            AllowOverride all
            Order allow,deny
            allow from all
            php_value session.cookie_domain ".site1.com"

            #Added by EOH for redirection
            RewriteEngine on
            RewriteRule ^([^/.]+)/?$ driver.php?uname=$1 [L]

    </Directory>

    ErrorLog /var/log/apache2/error.log

    # Possible values include: debug, info, notice, warn, error, crit,
    # alert, emerg.
    LogLevel warn

    CustomLog /var/log/apache2/access.log combined

I'd like to look at the domain name and then redirect to www.sitex.com. Is there an Apache rule to do this?

I hope someone can help. My SysAdmin/apache2 config skill aren't the best.

Many thanks in advance,

apache-2.2 configuration
Martin Hope
Eamorr
Asked: 2010-08-17 04:20:52 +0800 CST
  • 3

I'm trying to serve some pages via TinyProxy.

When I change my Firefox proxy settings to:

localhost:8888 (yes, I'm using a tunnel), all I get is a white screen?

When I comment out the line:

Listen x.x.x.x (the address of my server)

I get a 403 error: 

Access denied

The administrator of this proxy has not configured it to service requests from your host.
Generated by tinyproxy version 1.8.1.

At least I'm sure my tunnelling is working when I get this error...

However, can someone please help me with the configuration of TinyProxy?

Many thanks in advance,

proxy configuration tinyproxy
Martin Hope
Eamorr
Asked: 2010-08-06 16:17:10 +0800 CST
  • 1

I can't figure out iptables and I don't know very much about networking and I'm really hoping that someone out there can help me.

I have a server with two ip addresses associated with it: 1.1.1.1 and 2.2.2.2

Running Ubuntu 10.04

Here is my ifconfig:

eth0      Link encap:Ethernet  HWaddr 00:16:3e:xx:xx:xx  
          inet addr:1.1.1.1  Bcast:xxx.xxx.xxx.xxx  Mask:xxx.xxx.xxx.xxx
          inet6 addr: xxxxxxxxxxxxxxxxxxxxxxxx Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8601280 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2520243 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1736805563 (1.7 GB)  TX bytes:412953236 (412.9 MB)
          Interrupt:11 

eth0:0    Link encap:Ethernet  HWaddr 00:16:3e:xx:xx:xx  
          inet addr:2.2.2.2  Bcast:xxx.xxx.xxx.xxx  Mask:xxx.xxx.xxx.xxx
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:11 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1216209 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1216209 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:13294196379 (13.2 GB)  TX bytes:13294196379 (13.2 GB)

Everything works fine: when I type 1.1.1.1 or 2.2.2.2 into the address bar of a browser, I get the default Apache2 page as expected.

Now, I have an application that runs in the browser which has a WebSocket connection over port 8000. I serve the page over port 80 (http) as usual using 1.1.1.1, and I have the WebSocket communicating behind the scenes with 2.2.2.2 over port 8000. Everything's fine.

Now I plug in my 3G modem which blocks port 8000. My WebSocket communication to 2.2.2.2 fails.

I want the WebSocket to communicate with 2.2.2.2 over port 80, but get the server to translate requests on 2.2.2.2:80 to 1.1.1.1:8000.

I found this: meteorserver dot org/installation/ (see section 6) but it didn't work ;( I also tried this: http://www.cyberciti.biz/faq/linux-port-redirection-with-iptables/ but it gave me the following error:

ubuntu> sudo iptables -t nat -A PREROUTING -i eth0:0 -p tcp --dport 80 -j REDIRECT --to-port 8000
Warning: weird character in interface `eth0:0' (No aliases, :, ! or *).

Apparently IP aliases aren't supported ;( I tried putting eth0:0 in quotes and it still wouldn't work.

I'm completely stumped.

linux networking iptables