Difference between revisions of "CoovaChilli"
m (Add notes to bypass authentication) |
Unnilennium (talk | contribs) (→Bugs) |
||
(6 intermediate revisions by 2 users not shown) | |||
Line 56: | Line 56: | ||
*Attach an AP | *Attach an AP | ||
− | The final step is to connect an AP on the NIC. I'm talking about a AP and not a router. If you have a WiFi router, it is possible to work if these conditions are met: | + | The final step is to connect an AP on the NIC. I'm talking about a AP and not a router. If you have a WiFi router, it is possible to make it work if these conditions are met: |
**Dhcp is disabled on the router | **Dhcp is disabled on the router | ||
Line 96: | Line 96: | ||
*'''net''': the network range to use. The server uses the first IP available from the network (and thus default 10.1.0.1) and provide clients with addresses in this range. | *'''net''': the network range to use. The server uses the first IP available from the network (and thus default 10.1.0.1) and provide clients with addresses in this range. | ||
− | *'''status''': there's no trap | + | *'''status''': there's no trap, this key defines the state of service, and whether it should be started when the server boots up. |
*'''tundev''': defines the tun interface to use (chilli mask the real interface eth2 and the system sees the traffic as comming from a tun interface). | *'''tundev''': defines the tun interface to use (chilli mask the real interface eth2 and the system sees the traffic as comming from a tun interface). | ||
By default, tun0, you can change if tun0 is already used for a VPN for example. | By default, tun0, you can change if tun0 is already used for a VPN for example. | ||
+ | |||
+ | *'''uamhomepage''': URL of homepage to redirect unauthenticated users to. If not specified this defaults to the login page | ||
*'''uamallowed''': A list of host that will be accessible before authentication. It can be a simple list of host, or a list of the form host:port, or protocol:host, or protocol:host:port | *'''uamallowed''': A list of host that will be accessible before authentication. It can be a simple list of host, or a list of the form host:port, or protocol:host, or protocol:host:port | ||
Line 123: | Line 125: | ||
*'''noc2c''': can be enabled or disabled (default is enabled). If enabled, clients will get a /32 netmask, and a special route will be added so they can contact the gateway. This prevent direct client to client communication. Note that it's a layer 3 isolation, a better way to prevent client to client is a layer 2 isolation, some AP and switch provides this. | *'''noc2c''': can be enabled or disabled (default is enabled). If enabled, clients will get a /32 netmask, and a special route will be added so they can contact the gateway. This prevent direct client to client communication. Note that it's a layer 3 isolation, a better way to prevent client to client is a layer 2 isolation, some AP and switch provides this. | ||
+ | |||
+ | *'''macallowed''': A comma separated list of MAC addresses which won't need to authenticate | ||
After you've changed the configuration, just run the command | After you've changed the configuration, just run the command | ||
Line 225: | Line 229: | ||
*AllowedOutgoing will allow more outgoing traffic. It's a list of proto/host/port clients will be able to contact on the internet (These rules only apply to forwarded traffic, nothing will be allowed to the private network). Wildcard '*' (or keyword 'any') can replace host or port. Eg: | *AllowedOutgoing will allow more outgoing traffic. It's a list of proto/host/port clients will be able to contact on the internet (These rules only apply to forwarded traffic, nothing will be allowed to the private network). Wildcard '*' (or keyword 'any') can replace host or port. Eg: | ||
− | db configuration setprop AllowedOutgoing tcp:56.23.41.1:25,udp:*:1194,tcp:4.5.6.7:any,tcp:any:123 | + | db configuration setprop chilli AllowedOutgoing tcp:56.23.41.1:25,udp:*:1194,tcp:4.5.6.7:any,tcp:any:123 |
This will allow: | This will allow: | ||
Line 234: | Line 238: | ||
{{ Note box|proto can be tcp or udp only for now, there's now way to add icmp rules with db commands.}} | {{ Note box|proto can be tcp or udp only for now, there's now way to add icmp rules with db commands.}} | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
=== Troubleshoot === | === Troubleshoot === | ||
Line 283: | Line 267: | ||
and select the smeserver-coova-chilli component or use {{BugzillaFileBug|product=SME%20Contribs|component=smeserver-coova-chilli|title=this link}} | and select the smeserver-coova-chilli component or use {{BugzillaFileBug|product=SME%20Contribs|component=smeserver-coova-chilli|title=this link}} | ||
+ | {{#bugzilla:columns=id,product,version,status,summary |sort=id |order=desc |component=smeserver-coova-chilli|noresultsmessage="No open bugs found."}} | ||
+ | |||
+ | |||
+ | ===Changelog=== | ||
+ | Only versions released in smecontrib are listed here. | ||
+ | |||
+ | {{#smechangelog: smeserver-coova-chilli}} | ||
---- | ---- | ||
[[Category:Contrib]] | [[Category:Contrib]] | ||
+ | [[Category:Administration:Remote Access]] |
Latest revision as of 05:31, 7 November 2021
Maintainer
Daniel B. from Firewall Services
Version
Description
CoovaChilli is a (GNU GPL) captive portal based on chillispot. It will allow your SME in server and gateway mode to have a third interface. On this new interface, you can plug AP(s) or switchs, and chilli daemon will act as a dhcp server. Every clients connected on this new "lan" will have to authenticate themeself before coova-chilli allows traffic to pass. Once authenticated, clients will have only web access (http/https). Of course, you can customize firewall rules to allow more access, but I recommend the use of a VPN for full Internet access.
The default is to use SME accounts for the authentication, but you can easily add users at the radius level which will only have web access. (a guest account can be enabled/disabled with a key in the db)
You can also control the bandwidth used.
smeserver-coova-chilli integrates coova-chilli on your server. There's no panel for the configuration for now, but the it's quite easy with some db commands.
Requirements
- Server in server&gateway mode
- a 3rd network interface
The first step is to add a third network card on your server.
Installation
- install the rpms
yum --enablerepo=smecontribs install smeserver-coova-chilli
- Enable the service
By default, the service is turned off, but the rest of the config should be fine for most installations. To enable the service:
db configuration setprop chilli status enabled signal-event chilli-update
- Check that the daemon is running
ps aux | grep chilli
which should return something like this:
root 10726 0.7 0.1 5884 2152? Ss Apr07 6:50 /usr/sbin/chilli
- Create a group
In the server-manager, create a group called "chilli", and place in this group all users of the system that you want to give access to the wifi network (or anything you've pluged on eth2).
- Attach an AP
The final step is to connect an AP on the NIC. I'm talking about a AP and not a router. If you have a WiFi router, it is possible to make it work if these conditions are met:
- Dhcp is disabled on the router
- Lan ports and wireless interface are bridged
- Connect a lan port to eth2
You can also connect a switch to eth2, and add as many AP you want.
- Login
Connect a client, and try to open a web page, you should be redirected on a page like this one:
Or like this if guest access is enabled
List of db parameters
- TCPPort: a port where chilli daemon is listening, normally you do not need to change it
- access: Please, let this private. Setting public, which wouldn't be usefull at all, will open chilli daemon on the WAN port, which can be dangerous.
- defidletimeout: the defined period of inactivity of a client (no traffic) before disconnect (in seconds).
- defsessiontimeout: maximum duration of a session. After this time (in seconds, as defidletimeout), the client must reconnect
- dhcpif: the physical interface to use, in most cases, it will be eth2
- dhcpstart: where to start assigning IPs (DHCP range)
- dhcpend: where to stop assigning IPs
- dns1 and dns2: gives clients the dns servers to use. Here I have placed two public DNS servers.
They should work for everyone, but you can replace them by example by your ISP's DNS
- net: the network range to use. The server uses the first IP available from the network (and thus default 10.1.0.1) and provide clients with addresses in this range.
- status: there's no trap, this key defines the state of service, and whether it should be started when the server boots up.
- tundev: defines the tun interface to use (chilli mask the real interface eth2 and the system sees the traffic as comming from a tun interface).
By default, tun0, you can change if tun0 is already used for a VPN for example.
- uamhomepage: URL of homepage to redirect unauthenticated users to. If not specified this defaults to the login page
- uamallowed: A list of host that will be accessible before authentication. It can be a simple list of host, or a list of the form host:port, or protocol:host, or protocol:host:port
eg:
db configuration setprop chilli uamallowed tcp:contribs.org:80,udp:12.13.14.15:1194
- uamsecret: a shared secret between the login page and chilli daemon (to encrypt the password). As for radiussecret, the secret is randomly generated for each installation.
- AllowedServices: a list of services which will be accessible for chilli clients (see What authenticated users have access to ?)
- AllowedOutgoing: a list of allowed proto/host/port for the client (see What authenticated users have access to ?)
- RedirectToChilli: a list of IP address which will be redirected to your server. By default, InternalIP and ExternalIP are already redirected to your server. But in some situation (like if your Public IP isn't the same as ExternalIP), this setting can be usefull
db configuration setprop chilli RedirectToChilli 1.2.3.4,5.6.7.8
- WebRequests: direct/squid. Clients will get web access directly or through squid. The default is direct. You can set it to squid if you want to log request, to save some bandwidth, or to filter pages (with squidguard or dansguardian).
- guestAccess: enabled/disabled. If enabled, a radius user will be added with name = guest, password = guest, and a button will be displayed on the login page so guests only have to click on it to get logged in.
- guestDownLink: if guestAccess is enabled, this will limit the downlink bandwidth for guest user (in kbps)
- guestUpLink: if guestAccess is enabled, this will limit the uplink bandwidth for guest user (in kbps)
- noc2c: can be enabled or disabled (default is enabled). If enabled, clients will get a /32 netmask, and a special route will be added so they can contact the gateway. This prevent direct client to client communication. Note that it's a layer 3 isolation, a better way to prevent client to client is a layer 2 isolation, some AP and switch provides this.
- macallowed: A comma separated list of MAC addresses which won't need to authenticate
After you've changed the configuration, just run the command
signal-event chilli-update
it'll re-generate the necessary files and restart needed services.
The login page
The login page is a mix of the CGI provided with chillispot and some modifications of other login pages. You can customize it.
- /etc/e-smith/templates/etc/httpd/conf/httpd.conf/98chilli : This file is the template for apache, you can create a custom-template if you want to modify it (add php support, etc...)
- /opt/chilli/cgi-bin/hotspot-login.cgi : This is the main CGI, you can customize it, it won't be overriden on upgrades.
- /opt/chilli/hotspotlogin-conf.pl : This file contains some configuration for the hotspot (domain name, contact info, uamsecret, guestaccess). This file is templetized, so if you need to make some change, you should create a custom-template for /etc/e-smith/templates-custom/opt/chilli/hotspotlogin-conf.pl
- /opt/chilli/lang : This directory contains language files. English and French are provided, but you can add other if you want (contact me if you make a new translation, I'll integrate it in the package). You can edit all the language file, they won't be overriden on upgrades.
- /opt/chilli/css/sme.css : This CSS file is used to choose the background color, font class, logo etc... It can be customized, it won't be overriden on upgrades
The authorized group(s)
By default, only members of the group "chilli" have access to the portal. You can change this behavior (rename the authorized group, add WiFi account without SME account, allow only some users, allow several groups, restrict the bandwidth up and down ... etc)
To do so, follow the procedure:
- Create a folder in templates-custom:
mkdir -p /etc/e-smith/templates-custom/etc/raddb/users
- and copy the original template
cp -a /etc/e-smith/templates/etc/raddb/users/40chilli /etc/e-smith/templates-custom/etc/raddb/users
- Now, you can edit it. By default it looks like this:
{ if ((($chilli{'status'} || 'disabled) eq 'enabled') && ($chilli{'guestAccess'} || disabled) eq 'enabled'){ my $downlink = $chilli{'guestDownLink'} || '400'; my $uplink = $chilli{'guestUpLink'} || '64'; $downlink = $downlink * 1000; $uplink = $uplink * 1000; $OUT =<<END; guest NAS-Identify == "localhost", Auth-Type: = Local User-Password == 'guest' WISPr-Bandwidth-Max-Down = $downlink, WISPr-Bandwidth-Max-Up = $uplink END if (($chilli{'status'} || 'disabled') eq' enabled ') { $OUT = <<END; DEFAULT Group == "chilli", NAS-Identify == "localhost", Auth-Type: = unix # WISPr-Bandwidth-Max-Down = 512000, WISPr-Bandwidth-Max-Up = 128000 DEFAULT Group! = "chilli", NAS-Identify == "localhost", Auth-Type: Reject = Reply Message = "Your are not allowed member of the group" END } }
- If you want to replace the group "chilli" with "wifi" you only have to change Group == "chilli" by Group == "wifi". Same for Group! = "Chilli"
{ if ((($chilli{'status'} || 'disabled) eq 'enabled') && ($chilli{'guestAccess'} || disabled) eq 'enabled'){ my $downlink = $chilli{'guestDownLink'} || '400'; my $uplink = $chilli{'guestUpLink'} || '64'; $downlink = $downlink * 1000; $uplink = $uplink * 1000; $OUT =<<END; guest NAS-Identify == "localhost", Auth-Type: = Local User-Password == 'guest' WISPr-Bandwidth-Max-Down = $downlink, WISPr-Bandwidth-Max-Up = $uplink END if (($chilli{'status'} || 'disabled') eq' enabled ') { $OUT = <<END; DEFAULT Group == "wifi", NAS-Identify == "localhost", Auth-Type: = unix # WISPr-Bandwidth-Max-Down = 512000, WISPr-Bandwidth-Max-Up = 128000 DEFAULT Group! = "wifi", NAS-Identify == "localhost", Auth-Type: Reject = Reply Message = "Your are not allowed member of the group" END } }
What authenticated users have access to ?
By default, not much.
Basically once authenticated, users have access to
- DNS outside (udp port 53)
- Http outwards (through squid if squid is enabled and WebRequests set to squid), http to your server
- Https outwards and https to your SME
- Ping outwards and your server
There are two key in the db to customize this:
- AllowedServices will allow some services of your server to be acessible to chilli clients. For exemple, you want to make ssh and openvpn-bridge accessible:
db configuration setprop chilli AllowedServices sshd,openvpn-bridge
Services names need to correspond to those defined in the configuration db
- AllowedOutgoing will allow more outgoing traffic. It's a list of proto/host/port clients will be able to contact on the internet (These rules only apply to forwarded traffic, nothing will be allowed to the private network). Wildcard '*' (or keyword 'any') can replace host or port. Eg:
db configuration setprop chilli AllowedOutgoing tcp:56.23.41.1:25,udp:*:1194,tcp:4.5.6.7:any,tcp:any:123
This will allow:
- host 56.23.41.1 on port 25 to be accessible with TCP
- Any host will be accessible on port 1194 with udp
- All the port of host 4.5.6.7 will be accessible with tcp
- Any host will be accessible on port 123 with tcp
Troubleshoot
If the contrib doesn't work, check in the order:
- Be sure eth2 is detected
ifconfig -a
If eth2 is not shown, you may need to load the appropriate module
- Check if chilli daemon is running
ps aux | grep chilli
If chilli daemon is not running, try
signal-event chilli-update
If still nothing
/etc/init.d/chilli start
If you get an error, check the log /var/log/messages
- Check tun0 (or what you have configured as tundev) is up, with a valid ip
ifconfig tun0
- Check the client gets a ip in the range 10.1.0.0/24 (or what ever you have configured as net)
If it's not the case, check that the AP is working properly (tcpdump on tun0 to check that your server sees dhcp requests). You can try to connect your client directly to eth2 with a crossed cable to eliminate an AP or wifi-level issue
- Check your client can use DNS. If you get a timeout when you try to open a web page from the client, it's possible that the problem comes from some DNS issue. Try to enter an ip in your browser, even a fake on (http://11.12.13.4/ for example), if you see the login page, then, you should try to configure the DNS of your ISP in the db
db configuration setprop chilli dns1 <ip> dns2 <ip>
Uninstall
yum remove smeserver-coova-chilli coova-chilli
Bugs
Please raise bugs under the SME-Contribs section in bugzilla and select the smeserver-coova-chilli component or use this link
ID | Product | Version | Status | Summary (5 tasks) ⇒ |
---|---|---|---|---|
11289 | SME Contribs | 10alpha | IN_PROGRESS | Initial Import in SME 10 [smeserver-coova-chilli] |
7659 | SME Contribs | 8.0 | CONFIRMED | Smeserver coova chilli 404 error will not install not found on mirrors |
5584 | SME Contribs | 7.4 | CONFIRMED | Prob with MAC authentification |
5364 | SME Contribs | 7.4 | CONFIRMED | Chilli users don't get logged out when using Firefox |
5363 | SME Contribs | 7.4 | CONFIRMED | Windows XP PPTP VPN doesn't work with smeserver-coova-chilli installed |
Changelog
Only versions released in smecontrib are listed here.