Os : ubuntulanguage : c programmingI want to know is proxy is enabled in my system. so where does the kernel or browser stores this information.suppose if my system is using proxy server to connect internet, where exactly the proxy config file is store
View 7 Repliesim making client(browser) and proxy server application in linux and using c/c++....can any one guide me that how proxy server get page from internet and send it to the client (browser)?and how that page will be displayed on my browser??meanz that will be only text...if text then how i can display graphical page....
View 3 Replies View Relatedknow abt daemon process and how it is used for acting as proxy server if nay tutorial is there for it .
View 3 Replies View RelatedCurrently my DHCP Server is working now what i want to have is auto detection of squid proxy in any browser but I still got an error in my dhcp server when I restart it.
My Config:
# DHCP configuration generated by Firestarter
ddns-update-style interim;
ignore client-updates;
[code]....
I am trying to set up my squid3 proxy as a transparent proxy - right now, I have to manually configure browsers to access via proxy. I understand that I have to put some rules into Iptables and also some further directives in the squid.conf.
I have a couple of specific questions. The proxy server is running on a Ubuntu 10.04 workstation and this machine also acts as a dhcp server for the network. I have just one subnet , namely 192.168.0.1-254 There is only 1 network card. Is it much easier to put in a second network card or is it just as easy to configure the existing lan card as a dual IP?
Is it necessary to configure these 2 IP's ( whether they are via 2 lan cards or dual IP on single card ) to be on different subnets. i.e ETH0 192.168.0.1 and ETH1 192.168.1.1 or is ok to have something like ETH0 192.168.0.1 and ETH1 192.168.0.254 ( where ETH0 is the one facing the LAN and ETH1 points to the modem router / switch i.e The Internet ) Where specifically do I save the Iptables rule configuration file and what must I call it ?
I cannot ssh into an RHEL 5.5 server (192.168.20.104) from another RHEL 5.5 server (192.168.20.101) unless server debug is turned on 192.168.20.104, and even then, I have to wait several minutes before the connection is established. scp to and from the 104 server is also not working.Here is the debug output on the 101 server when server debug is not enabled on the 104 server-:
Code:
[applmgr@tclg-clone-01 ~]$ ssh -vvv 192.168.20.104
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
[code]...
I have multiple public ip addresses.My DSL modem blocks ping from a server behind the modem (nb6+4w) modem lan ip (gateway) is xxx.xxx.xxx.105the server is xxx.xxx.xxx.107If I DMZ this server it responds to pings.If i don't want to use DMZ, what service is ping using.I have set up virtual server 443 to this 107 ip as it's a SSL server
View 5 Replies View RelatedI have a script that works fine on a commercial server and my CentOs Box at home but doeasn't work with another commercial server (Where we need it to).I have pulled the PHPINFO.PHP from both and wondering if someone could tell me which parameters to compare when the following happens:The script seems to do the HTML/Java and outputs the PHP script on the page , but this site has many other PHP scripts working fine:
View 6 Replies View RelatedI will be relocating to a permanent residence sometime in the next year or two. I've recently begun thinking about the best way to implement a home-based network. It occurred to me that the most elegant solution might be the use of VM technology to eliminate as much hardware and wiring as possible.My thinking is this: Install a multi-core system and configure it to run several VMs, one each for a firewall, a caching proxy server, a mail server, a web server. Additionally, I would like to run 2-4 VMs as remote (RDP)workstations, using diskless workstations to boot the VMs over powerline ethernet.The latest powerline technology (available later this year) will allow multiple devices on a residential circuit operating at near gigabit speed, just like legacy wired networks.
In theory, the above would allow me to consolidate everything but the disklessworkstations on a single server and eliminate all wired (and wireless) connections except the broadband connection to the Internet and the cabling to the nearest power outlets. It appears technically possible, but I'm not sure about the various virtual connections among VMs. In theory, each VM should be able to communicate with the other as if it was on the same network via the server data bus, but what about setting up firewall zones? Any internal I/O bandwidth bottlenecks? Any other potential "gotchas", caveats, issues? (Other than the obvious requirement of having enough CPU and RAM).Any thoughts or observations welcome, especially if they are from real world experience in a VM environment. BTW--in case you're wondering why I'm posting here, it's because I run Debian on all my workstations/servers (running VirtualBox as a VM for Windows XP on one workstation).
I am trying to build a cross GCC compiler for PPC476. I applied all the relevant patches. Cross compiler build was successful. When I try to compile the source code using the cross compiler I am getting the below error message. I think this is something related to linker.
Code:
cow_shim_funcs_startup_shutdown.o cow_shim_utils.o ../../dm/cfg/cfgi.a ../../dm/pl2/libsas21xxpl.a ../../raid/pfk/libpfk.a
/home/Raghu/gcc/cross-compiler/ppc/tools/lib/gcc/powerpc-unknown-linux-gnu/4.3.1/../../../../powerpc-unknown-linux-gnu/lib/libgcc_s.so: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
make: *** [app.out] Error 1
I am looking for the active CPU in my dell server whichl has 64 cpu's, can anyone explain me how to list the cpu which are currently active and cpu's not active, also appriciated if you could help in clarifying how to enable a cpu or disable cpu in the RHEL 5.5 environment
View 1 Replies View RelatedI've two internet based server ( xx.xx.xx.xx and yy.yy.yy.yy ) The Y server is running VNC server and is responsible for answering to VNC sessions. But I need to hide the IP of Y server so I want X server to be as VNC Proxy and redirect all VNC sessions to Y server.
I guess the best way is to use iptables but actually I can't get it working so
Im new in linux i want to configure my redhat machine as both router and transparent proxy!
View 1 Replies View RelatedI have a centos server (5.3). I installed WebMin to assist with some of the administration details. In any event, I got it installed but I cannot access it (it requires a secure connection).
I checked out the server and it does not respond to a HTTPS:// request. When I telnet into port 80, it responds but it does not respond on port 443. MOD_SSL is installed and there is an ssl.conf (unmodified).
I have Postfix up and working perfect. It receives and sends email fine with no TLS and SASL but I installed Dovecot and then generated some self signed certificates using 'openssl' and for some reason I can't send from my IMAP server. I get this in my logs:
Code:
Mar 3 11:20:45 mail dovecot: imap-login: Login: user=<carlos>, method=PLAIN, rip=10.1.1.204, lip=192.168.0.200, TLS
Mar 3 11:21:20 mail postfix/smtpd[1386]: connect from tuna.mydomain.tld[10.1.1.204]
[Code].....
My Question is I have installed the ssh key authentication in Server A. User can connect this using key file via SSH. without authentication user can't connect this system via SSH. Now I am trying to copy the file from Server B through SCP command. But it is not working. While I am trying use this command from Server B I am getting below error "ssh: connect to host xxx.xxx.xxx.xxx port 22: Connection timed out lost connection". xxx.xxx.xxx.xxx is Server A. SSH is enabled in both server A,B.
why SCP command is not working?
The nagios admin interface apparently needs php (although, of course, the howto mentions nothing of the sort). So then, I copied the php.conf that had at some time been installed on the system, and then moved by me out of /etc/httpd/conf.d, back into conf.d. It's a fairly simple one:
#
# PHP is an HTML-embedded scripting language which attempts to make it
# easy for developers to write dynamically generated webpages.
#
LoadModule php5_module modules/libphp5.so
[Code]....
Scenario:A - Local Unix machineB - socks proxy server port 1080C - remote mysql server port 3306I want to connect to the remote mysql server(C) from local unix machine(A) using sock proxy(B).
View 1 Replies View RelatedRHEL 5 is my proxy server. i want to remove temp files and cache . How do i remove cache and temp files.
View 3 Replies View Relatedwe need to log web access of a certain set of users for analysis. We decided to setup a proxy server which just logs all the requests but does not do anything else like caching/access control etc.All users will be using a fixed set of computers and hence we can redirect their requests to the proxy. I came across Squid, but found it to be too heavy for our requirements. Is there any other proxy-server software that is good enough for what we want or is Squid the only way?
View 1 Replies View RelatedI have a few friends that have seen me bypass firewalls with a socks proxy (SSH). I explained on how it works and how secure it is for browsing the Internet and checking your email in public places. I had at least 6 asked me if I could set up an account on my server for them and they would pay me! Now what I wanted to know was how I can set this up in a server and website where they can register an account and pay me through PayPal! I don't need help setting up the site! Just on how to set up the server to automate this. What tools are needed (ex. ISPConfig, jailkit.... stuff like that?) I don't mind doing this manually but if I get more people that would like this I don't really want to do every single one.
View 1 Replies View RelatedI want to make a transparent squid proxy server in centos. The squid proxy version is 2.6 stable. I made a normal squid server but want to make it transparent so that users do not need to enter the proxy settings in web browser. Even i searched about this on google but not getting it properly.I have two lan cards on centos system. ETH1 used for LAN and ETH2 used for WAN. And in this squid.conf i written "http_port 172.16.31.1:3128 transparent" and i also added a rule in iptables which is "iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j REDIRECT --to-port 3128" but still i have to enter proxy settings at client's web browser to use internet
View 4 Replies View RelatedWe currently have a SUSE Apache2 reverse proxy server setup to reverse proxy (proxy_mod) our GroupWise Web Access server. Our SUSE box is located at www.domain.com. Our GroupWise Web Access server is located internally and is called GWMail. We are in the process of migrating from Novell to Windows, so we will have an exchange server with OWA access running on a Windows Server 2008 IIS7 box. That one will be called EXMail internally. Right now when someone goes to www.domain.com/gw/webacc it goes to the GWMail internal server from the outside world. This was all set up by previous techs who used Linux more.
We would like to set up reverse proxy to be able to reverse proxy to the Exchange Server from the outside world. Unfortunately the snag we are running into is that Exchange needs to run on port 443, and forwarding to port 443 has been a little tricky. I've read elsewhere we need to implement a generic TCP proxy, such as IPtables. what we need to do to get our SUSU Apache2 server to be able to reverse proxy to our Exchange server on port 443. For the save of argument lets call our SUSE server ExtranetServer. Below is our default-configuration.conf file's configuration:
[Code]....
I have an embedded device which acts as a client, and a server at office. The IP address of the client is allocated by DHCP, so its IP address is actually variable. I would like to know what is the simpliest way to maintain the communication between client and server when DHCP is enabled. I once used socket many years ago to communicate between the client and the server. If I remember it right, I actually bypassed the dynamic IP issues by using the computer name to replace the IP address. Even the client is not at the same local network as the server, the scheme still worked. Correct me if my memory cheated me. if socket is still the best solution for this kind of application involving DHCP? I also heard from someone that it is necessary to implement multicast discovery protocols named BONJOUR, but I don't think it is necessary
View 2 Replies View RelatedI have installed RHEL 6 and registered it. I want to install
php-mcrypt
libmcrypt
and some other packages but could not find in the currently enabled repository. Can i get a list of the available repositories.
# yum repolist
Loaded plugins: rhnplugin
repo id repo name status
rhel-x86_64-server-6 Red Hat Enterprise Linux Server (v. 6 for 64-bit x86_64) 3,930
repolist: 3,930
I have a question today: "How to detect client use Sock or Proxy?"Note: I hope everyone serious discussion.
View 1 Replies View RelatedI have installed proxy server on ubuntu.I have done every process which is needed to establish proxy server.internet is also working fine through proxy but the sites which needs to be blocked it is not blocking.it is opening.I have made entry of sites which i needed to be blocked in block_dstdomain file in proxy
View 3 Replies View RelatedI decided that I'd torture myself and try to get a server up and running with SELinux fully enabled. I so far have figured out virtual hosting, vsftpd, and SSH to work with it nicely, but I can't figure out what to do to get AWstats to be viewable through a browser with SELinux enabled. This is what I get from /var/log/messages:
Code:
Mar 19 15:09:34 localhost kernel: type=1400 audit(1237496974.987:69): avc: denied { getattr } for pid=4769 comm="httpd" path="/usr/share/awstats/wwwroot/cgi-bin/awstats.pl" dev=sda1 ino=1267968 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_awstats_script_exec_t:s0 tclass=file
Mar 19 15:09:34 localhost kernel: type=1400 audit(1237496974.987:70): avc: denied { getattr } for pid=4769 comm="httpd" path="/usr/share/awstats/wwwroot/cgi-bin/awstats.pl" dev=sda1 ino=1267968 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_awstats_script_exec_t:s0 tclass=file
Could someone explain to me what I should be looking for in these messages? Or what I would need to do to fix it?
I have installed Ubuntu 64 10.04 server. I have two nics and have set them up to both be static with their own IP with the correct gateway, network, broadcast, subnet and dns-nameserver. When I have both enabled, I can ping local pc's but I can't ping Internet sites like Google nor can I get out to the Internet with apt-get or Lynx.
If I disable one, then I am able to get out to the Internet. All my configs look good, and it does not matter which one I disable, just so long as there is only one NIC on, everything is good.
I have a problem in my server proxy.I'm using the debian etch distribution, only that now started showing this error:
201.42.212.47 sent an invalid ICMP type 3, code 0 error to a broacast: 0.0.0.0 on eth0
201.42.212.47 sent an invalid ICMP type 3, code 0 error to a broacast: 0.0.0.0 on eth0
201.42.212.47 sent an invalid ICMP type 3, code 0 error to a broacast: 0.0.0.0 on eth0
[code]....