Wireless Authentication Gateway

May 12, 2008

I'm doing a project for my school ( a small technical college) and we're trying to come up with some sort of wireless authentication gateway. This doesn't need to be locked down and super secure, this is a state run school with an open wifi network. Basically we want all wireless users to be forced to view a splash page/AUP and agree to it before being able to access the web.

couple issues:
-Super low budget, so enterprise solutions are pretty much out of the question
-must be as transparent as possible to the use: no MAC registering with the IT dept. no added software, no RADIUS certs etc.
-we have limited access to the actual router and all administration but be done by the upstream provider(including inter-vlan routing)

I've looked at NoCAT and really like it but because of the existing network topology its going to be hard to force all traffic through a central box for filtering/auth

What I'm wondering is if there is a way to do selective DNS poisoning to redirect all lookups to a web authentication server(similar to nocat's system). After a host is authenticated their DNS would resolve correctly. I know someone could just go out by IP or potentially use different DNS servers but we really aren't that concerned about it, all they have to do is click 'accept' anyway.

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Laptop + Wireless Router = LAN

Oct 22, 2009

I hate to ask this, because I bet it's been asked many times before, but I want to start a little class teaching web development at a local night school and I wanted to set up a LAN using my laptop, CentOS, and a wireless router.

The idea is to have the students develop their pages and download files and get used to the idea of what a server is.

I see about ten students sitting in a room, popping open their laptops, logging onto the network, and then pointing their browsers to a certain IP address which would be the home page for the class.

If this is possible, can anybody point me in the right direction to teach myself how to do it?

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Jun 12, 2007

I have not been able to connect to my server via browser, ftp or email since my server had a OS reload & security package installed.

If I disconnect and remove my wireless router I can access the server directly from the modem. When the Linksys WRT54G is connected I can go anywhere on the net with no problems, except my server.

Is there something they might have done at the server to block wireless router access?

I get a timed out message when I ping any of the IP's on the server with the wireless router connected.

Linksys has been of no help and I have talked with Clearwire who owns my modem.

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Stop Outbound Spam On An Open Wireless Network

Jan 31, 2008

I'm not sure if this is the right place to be posting this, but at our hotel, we have wireless routers (Linksys) that any of our clients can use to connect their laptops to the internet. We have been getting reports from our ISP that spam has been coming from our external IP address, so I wanted to know what people would recommend as ways to combat either our computers or any of our clients' computers from sending out spam. The internet is connected through a firewall/server computer running linux. I thought about blocking port 25, but I'm sure we would have clients complaining about not being able to send any mail.

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May 27, 2007

Anyone have recommendations / references for Mexico / Latin America wireless ISPs and coverage areas?

IP satellite coverage?

Also looking for recommendations for Mexico / Latin America data centers (something like half rack, 20 amps, reliable, redundant, etc)

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Plesk 12.x / Linux :: ATT Wireless Network Inserting Extra Characters Into Web Page?

Sep 3, 2014

Over the last two weeks several individuals in different parts of the USA have noted extra characters in some web pages when on the att network.

The same server is sending out the same sites fine, when viewed on all other internet providers we have tested. We have also tested multiple browsers. Interestingly, if you use the secure layer - https, the site is fine, no extra characters.

Can any settings or anything on the server hosting software, etc, precipitate or stop this?

Read more at [URL]...

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Feb 21, 2007

setting up something that would run via php and then send SMS when its called to do so.

I would need a mobile line attached to the server and then I am a little lost.

Currently what I do is that I have my own monitoring script, then when somethings goes wrong, it emails to one of my email accounts and then it SMS me of the contents. But their service is not always reliable so was wanting to setup something on my own end.

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Adding In New IP And Gateway

Jul 21, 2008

My server in the datacenter has to migrate to new IPs. Is it feasible to add new ip and gateway and have that operating on eth0 -- doing it remotely?

The dc said I can have both IPs concurrently working for the next 10 days or so.
But, I'm still unsure if I can safely set the new ip and gateway on the server remotely.

Any help would be appreciated. Of course, I have logged a ticket to see if they will set my new primary ip from the console and all the virtual interfaces ...

But, would like to know for my own information if this process is doable remotely.

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Gateway Error

May 18, 2008

Some visitor of our hosted sited have "Getway Error"

Im attach this error,

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Gateway Setting

May 12, 2007

I have signed up a new rack and the provider give me the following information:

Service IP address assigned:
Default Gateway: 10.0.0.193
Assigned WAN IP: 10.0.0.192/30
LAN IP Block: 172.16.0.192/27

*first three digits of IPs are changed.

In Windows 2003, I can use the LAN IP with Default Gateway and I can browse the net without problem (with warning though). But, when I configure the Cisco switch (2950), it didn't allow me to use gateway that is in different subnet. I have checked the LAN IP Block and it seems that all IPs in that subnet can be used. Could you teach me how to config the switch and the other servers?

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Default Gateway

Oct 1, 2007

im trying to setup a vps server on one of my dedicateds, (for personal use) ive got the vps running and os installed etc but i cannot for the life of me setup networking. i have 2 ips from my datacenter but they havent given me a default gateway ip and dont seem to know what one is so does anyone know how to get the default gateways ip for a ip (the ip i have is in the 66.79.185.xxx group )

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What Email Scanner Gateway

Apr 10, 2009

What type of free email scanner gateway that you are using? I am using SA, Clam and Qmail. It's a little old and w/o the GUI for client to manage the settings.

I'm thinking to switch to something with GUI. Perhaps the combination of Exim, SA, Clam, MAilScanner and a GUI.

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Using Postfix As An SMTP Gateway

Nov 14, 2007

I have been trying to determine if I should use Postfix or Exim for our new SMTP gateway. My biggest obstacle is in trying to determine if Postfix can handle the processing as efficiently as Exim.

Basically we have hundreds of domains that will have email going through the gateway. I need to know if Postfix can be configured to perform different actions based on the recipient domain (i.e. block receipt of message or add a header and deliver). It looks like this functionality is handled by using a 3rd party tool like "amavisd".

The problem is that it looks like I have to wait for the DATA to be received before I can send the mail to the filtering tool rather than just waiting until the last RCPT command. It is also unclear as to whether the message will be denied during delivery with a 550 error being returned or whether the message is accepted and a postmaster message is sent. Obviously I would prefer the 550 error.

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Remote Access VoIP Gateway

Dec 10, 2007

Does anyone have an expierence with remote access servers/gateways for providing VoIP and dial services? What would you recommend?

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Setting Up An SSH Gateway Server For Techs

Jun 15, 2009

I've been battling with this issue for days now, and I'm sure the solution is simple, so hopefully someone can guide me.

Basically this is my server setup:

1) Tech Server

2) Server 1

3) Server 2

The tech server hosts the main company website, billing, etc. It is also used as the SSH gateway to get into the other servers. Server 1 and 2 host end user websites.

The tech server has an "id_dsa" key on it for the root user.

Server 1 and Server 2 have the public key in authorized_keys

I am able to access Server 1 and Server 2 from the tech server when logged in as "root". However - when signed in as a standard user (i.e. "nick") I am unable to use the id_dsa key to login to the remote servers.

I've tried setting the HostKey variable in the sshd_config file but that wasn't it. I also tried adding the "-i" command to my ssh command.

The only solution I found was to put the id_dsa file under each standard user account (i.e. copying it to /home/nick/.ssh) - however - that's not very secure.

In a nutshell - how do I get standard SSH users to be able to use the root id_dsa key without being able to view it

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Email Spam/Virus Gateway

Dec 11, 2006

Several companies like Fast servers and the planet provide spam filtering mail gateways (Spirus/ Barracuda etc).

Are there any reliable affordable 3rd party services out there as well?

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2 NIC - Set Default Gateway - Crossover Cable In Use

Apr 24, 2007

I have a Linux Server (CentOS 4.4) running, it has two network cards.

1. Onboard 100MBit (eth0), uses DHCP to obtain IP, this card is the only one that is able to connect to the internet.
IP: 192.168.1.13
Subnet: 255.255.255.0
Gateway: 192.168.1.1
Bcast: 192.168.1.255

2. PCI Gigabit card (eth1), uses static IP, and is connected to my Windows machines via a CROSSOVER cable.
IP: 192.168.2.2
Subnet: 255.255.255.0
Gateway: NONE
Bcast: 192.168.2.255

Before I installed the gigabit card all internet was working fine. However now i cannot even ping? here is some more info:

PHP Code:

[root@node home]# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 
          inet addr:192.168.1.13  Bcast:192.168.1.225  Mask:255.255.255.0
          inet6 addr: fe80::213:20ff:fee9:69de/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:473 errors:0 dropped:0 overruns:0 frame:0
          TX packets:462 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:60513 (59.0 KiB)  TX bytes:497973 (486.3 KiB)

[root@node home]# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 
          inet addr:192.168.2.2  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:76ff:fe7d:46/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:15996232 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7250441 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1137563077 (1.0 GiB)  TX bytes:437192485 (416.9 MiB)
          Interrupt:177 Base address:0x2f00

[root@node home]# netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
192.168.39.0    0.0.0.0         255.255.255.0   U         0 0          0 vmnet1
192.168.2.0     0.0.0.0         255.255.255.0   U         0 0          0 eth1
192.168.1.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
172.16.123.0    0.0.0.0         255.255.255.0   U         0 0          0 vmnet8
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth1
[root@node home]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.39.0    *               255.255.255.0   U     0      0        0 vmnet1
192.168.2.0     *               255.255.255.0   U     0      0        0 eth1
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
172.16.123.0    *               255.255.255.0   U     0      0        0 vmnet8
169.254.0.0     *               255.255.0.0     U     0      0        0 eth1
[root@node home]# 

Im sure its just a few lines I need to change somewhere, just not sure where?

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Symantec Gateway Server Appliance

May 22, 2007

I'm getting a Gateway Server Appliance 5420.

512 MB RAM
2.0 GHz Celeron
40 GB HD
6 Ethernet Ports
LCD Front Display

and it's an appliance like the Cobalts but for security, however I was wondering if anyone knew of a way to just use it as a regular either windows headless server or linux server. Also does anyone know if it's possible to upgrade the processor? Maybe even a Xeon as I know all the other models come with Xeon Processors or do they actually use a seperate motherboard?

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Plesk 12.x / Linux :: 502 Bad Gateway Using Nginx

Oct 30, 2014

Today at 12.50 pm my (ubuntu 14.04.1 LTS) server running plesk 12.0.18 suddenly stopped serving websites. Any attempts to access a webpage on any vhost returned the 502 bad gateway using Nginx error messsage.When I looked at the nginx logs, I found messages like:

2014/10/30 14:48:00 [error] 3099#0: *101 connect() failed (111:

Connection refused) while connecting to upstream, client: m.m.m.m, server: , request: "GET /server-status HTTP/1.0", upstream: URL....

Restarting apache & nginx (/etc/init.d/apache2 restart & /etc/init.d/nginx restart) made no difference and I had to reboot to restore http access.

Strangely if I browsed with port 7080 specified (i.e. http://n.n.n.n:7080), this worked fine for all vhosts, so apache (which I believe is listening on this port while nginx listens on port 80) is working fine - nginx is just not able to pass stuff to it?

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Plesk 12.x / Linux :: Bad Gateway Nginx

Jun 17, 2015

this is a fresh Plesk 12 installation on a Dedicated Server, on Debian 6. I haven't installed a License key yet.When i tried to run MIgration Manager, the loading was taking forever. Also, when i try to enter Webserver Configurations Troubleshooter, i get 502 Bad Gateway nginx error.In the /var/log/sw-cp-server/error_log i get this error:

Code:
2015/06/17 11:42:47 [error] 3918#0: *52 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: A.B.C.D, server: , request: "GET /modules/configurations-troubleshooter/index.php/index/list HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "X.X.X.X:8443", referrer: "https://X.X.X.X:8443/admin/module/list?context=modules"
When i try to insert a Plesk License, i also get this error:

Code:
2015/06/17 10:29:17 [error] 5643#0: *81 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: A.B.C.D., server: , request: "POST /server/
key_upload.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "X.X.X.X:8443", referrer: "https://X.X.X.X:8443/server/key_upload.php"

I followed this KB article 118757 but no luck. Also, the server resources are at the lowest usage and there is >2 TB disk space available.

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Plesk 12.x / Linux :: 502 Bad Gateway Nginx

Jun 23, 2015

We have a problem with a magento website. Often (perhaps when we use administration), we have the message "502 Bad Gateway nginx".

We have added server instructions in Plesk Nginx:
proxy_buffers 16 16k;
proxy_buffer_size 32k;
fastcgi_buffer_size 32k;
fastcgi_buffers 16 12k;

But we have still the problem.

We have tried :
[URL] ....
And
[URL] ....

Without results...

The log file say:

[client x.x.x.x] client denied by server configuration: /var/www/vhosts/domain.com/httpdocs/app/etc/local.xml

x.x.x.x is the website IP.

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Foundry Bigiron: Duplicate Gateway IP Address

Oct 5, 2009

We are having some problems with a Foundry Bigiron 4000.

The hardware config is as following:

- Bigiron 4000 chassis

- 2x B8GMR3-A management (active + standby)

- 2x B24E

Once every couple of days now, we get the following error in syslog:

Code:
2009-10-05 20:40:00User.Warning8x.xx.50.1Oct 5 20:39:59 gateway IP: IP: Duplicate IP address 8x.xx.38.1 detected sent from MAC address 0004.d3ea.e200 interface 3/13, 1 packets, first packet received at time 1 days 20 hours 41 minutes 37 seconds since bootup!............

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Local Connetion With Static IP's What Is The Gateway Address

Jun 1, 2009

we have two servers; webserver and database server connected directly to each other via a standard cat6 cross-over cable. I am setting up their static IP's and have a few questions.

Both are running windows 2003. I went and setup the static ip's as follows:

[webserver]
IP: 192.168.200.1
SUBNET MASK: 255.255.255.0
GATEWAY: {blank}
DNS1: {blank}
DNS2: {blank}

[database server]
IP: 192.168.200.2
SUBNET MASK: 255.255.255.0
GATEWAY: {blank}
DNS1: {blank}
DNS2: {blank}

So DNS being blank is fine since there is no need for DNS, all communication is local (no internet). But should the gateway address be blank?

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Open Source Anti Spam Gateway

Dec 4, 2008

Does anybody know of any open source Anti Spam gateway for mail servers? I have used MailCleaner and know how it works. Is there any other available?

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Plesk 12.x / Linux :: Application Vault 502 Bad Gateway

Jul 2, 2014

When i open the page i get the error: "502 Bad Gateway"with strace i get the following error:

Code:
connect(14, {sa_family=AF_FILE, path="/var/run/mysqld/mysqld.sock"}, 110) = 0
setsockopt(14, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported)
setsockopt(14, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0

System: Debian 7.5
Mysql: 5.6.19
Plesk: 12.0.18

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Plesk 12.x / Linux :: Bad Gateway Nginx After Upgrade

Aug 18, 2014

I have upgraded from 10 to 12 and now I have "502 Bad Gateway nginx" error. I have atached logas..

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Plesk 12.x / Linux :: 502 Bad Gateway After Upgrade On Subscriptions

Sep 27, 2014

After upgrading (i know, i should not do this) from Squeeze to Wheezy i have got a problem with subscriptions.Plesk seems to work, but whein i want do manage a domain/hosting. i just see 502 Bad Gateway nginxClick to expand...

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Plesk 12.x / Linux :: 502 Bad Gateway Error When Use NGINX

Jan 14, 2015

I have a server with the latest version of plesk and centos.

The main site is Articoli Promozionali

Until now kept on the server active both apache and nginx.

Tonight I tried to disable apache leaving only nginx.

That raises the error: 502 bad gateway NGINX at all sites on that server.

To use nginx i need to keep active apache?

What can cause that error?

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Plesk 12.x / Linux :: Error 502 Bad Gateway After Upgrade

Jun 27, 2014

I have upgraded from 11.5 to 12, and now if I try to open Plesk on the port 8443 I have this error:

502 Bad Gateway

nginx

This is the log:
2014/06/27 18:25:13 [crit] 1629#0: *2 connect() to unix:/var/run/sw-engine.sock failed (2: No such file or directory) while connecting to upstream, client: 79.49.206.176, server: , request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "87.106.85.233:8443"

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Plesk 12.x / Linux :: 502 Bad Gateway Errors After Upgrading To 12.0.18

Aug 13, 2014

Yesterday I've upgraded the server to Plesk 12.0.18. After the upgrade, a WHMCS install has stopped working.

The only error logs where I found errors is the proxy_error_log. It contains this kind of lines (for the 502 error):

2014/08/13 08:13:45 [error] 2918#0: *400 upstream prematurely closed connection while reading response header from upstream, client: XX.XX.XX.XX, server: XXXXXXX.COM, request: "GET /knowledgebase.php HTTP/1.1", upstream: "http://XX.XX.XX.XX:7080/knowledgebase.php", host: "xxxxxxxxx.com"

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