[RADIATOR] (RADIATOR) enable privilege levels for TACACS+ server
Hugh Irvine
hugh at open.com.au
Sat Sep 25 23:36:40 CDT 2010
Hello Markus -
We have now added these values into cisco-avpair attributes in the derived RADIUS request.
This support is in the latest Radiator 4.7 patch set (from today), and the reference manual will be updated in the next release.
Please let us know how you get on with this.
regards
Hugh
On 25 Sep 2010, at 21:13, Markus Moeller wrote:
> Hi Hugh
>
> Is this anywhere documented ? I can't find anything in the reference manual
> (e.g. what are the arguments) . Looking at the code I see $action and
> $authen_type are handed over but not privilege level.
>
> Also it looks more like the Hook is replacing the standard authentication handling and is not what I want.
>
> Anyway why does this basic TACACS attribute need special treatment ?
>
> Thank you
> Markus
>
> ----- Original Message ----- From: "Hugh Irvine" <hugh at open.com.au>
> To: "Markus Moeller" <huaraz at moeller.plus.com>
> Cc: <radiator at open.com.au>
> Sent: Friday, September 24, 2010 11:51 PM
> Subject: Re: [RADIATOR] (RADIATOR) enable privilege levels for TACACS+
> server
>
>
>
> Hello Markus -
>
> You can do this already with the AuthenticationStartHook.
>
> See the code immediately following what you show below.
>
> regards
>
> Hugh
>
>
> On 25 Sep 2010, at 03:09, Markus Moeller wrote:
>
>> Hi,
>>
>> Would it be possible to map also the privilege level from the tacacs
>> request into a radius attribute ? This will allow to differentiate in
>> Radiator if a user typed enable or enable 5 or enable 7.
>>
>> Thank you
>> Markus
>>
>>
>> ####################################################################
>> # Handle a TACACS+ authentication START request
>> sub authentication_start
>> {
>> my ($self, $body) = @_;
>>
>> $self->{user} = undef;
>> $self->{password} = undef;
>>
>> my ($action, $priv_lvl, $authen_type, $service,
>> $user_len, $port_len, $rem_addr_len, $data_len,
>> $fields) = unpack('CCCCCCCCa*', $body);
>> if ($user_len + $port_len + $rem_addr_len + $data_len >
>> length($fields))
>> {
>> $self->{parent}->log($main::LOG_ERR, "Inconsistent lengths in
>> Tacacs Authentication request from $self->{peeraddr}:$self->{peerport}.
>> Bad Key?");
>>
>> $self->authentication_reply($Radius::Tacacsplus::TAC_PLUS_AUTHEN_STATUS_ERROR,
>> 0, 'Inconsistent lengths');
>> $self->disconnect();
>> return;
>> }
>> # Decode the variable length fields
>> my $i = 0;
>> my $user = substr($fields, $i, $user_len); $i += $user_len;
>> my $port = substr($fields, $i, $port_len); $i += $port_len;
>> my $rem_addr = substr($fields, $i, $rem_addr_len); $i +=
>> $rem_addr_len;
>> my $data = substr($fields, $i, $data_len); $i += $data_len;
>>
>> $self->{parent}->log($main::LOG_DEBUG, "TacacsplusConnection
>> Authentication START $action, $authen_type, $service for $user, $port,
>> $rem_addr");
>>
>> $self->{user} = $user;
>> $self->{port} = $port;
>> $self->{service} = $service;
>> $self->{rem_addr} = $rem_addr;
>> my $tp = $self->create_radius_request('Access-Request');
>>
>> The Tacacs request contains the following, but only user, port, servicve
>> and remote address are converted not the privelege level.
>>
>> > Decrypted Request
>> > Action: Inbound Login
>> > Privilege Level: 15
>> > Authentication type: ASCII
>> > Service: ENABLE
>> > User len: 6
>> > User: fred
>> > Port len: 5
>> > Port: tty18
>> > Remaddr len: 12
>> > Remote Address: 192.168.1.1
>> > Data: 0 (not used)
>>
>>
>> ----- Original Message -----
>> From: Markus Moeller
>> To: radiator at open.com.au
>> Sent: Tuesday, January 29, 2008 11:17 PM
>> Subject: (RADIATOR) enable privilege levels for TACACS+ server
>>
>> I try to run in addition to the Radius server the TACACS+ server. On
>> cisco router you can get into different privilege leves by using enable #
>> where # is a number between 1 and 15. On a normal TACACS+ server this
>> corresponds to users enable# e.g. 15 different users and passwords.
>>
>> The Tacacs+ client sends among others the following AV pairs
>>
>> Service = ENABLE
>> Privilege Level = #
>> User-name = fred
>> User-password = fred
>>
>> In the Radiator log I can only see among others the following attributes:
>>
>> Service-Type = Administrative-Login
>> User-name = fred
>> User-password = fred
>>
>> The Service Type changes from User-Login to Administrative-Login but I
>> can't identify the privilege level attribute ?
>>
>> How can I get access to the privilege level attribute from TACACS+ ?
>>
>> Thank you
>> Markus
>>
>> _______________________________________________
>> radiator mailing list
>> radiator at open.com.au
>> http://www.open.com.au/mailman/listinfo/radiator
>
>
>
> NB:
>
> Have you read the reference manual ("doc/ref.html")?
> Have you searched the mailing list archive
> (www.open.com.au/archives/radiator)?
> Have you had a quick look on Google (www.google.com)?
> Have you included a copy of your configuration file (no secrets),
> together with a trace 4 debug showing what is happening?
>
> --
> Radiator: the most portable, flexible and configurable RADIUS server
> anywhere. Available on *NIX, *BSD, Windows, MacOS X.
> Includes support for reliable RADIUS transport (RadSec),
> and DIAMETER translation agent.
> -
> Nets: internetwork inventory and management - graphical, extensible,
> flexible with hardware, software, platform and database independence.
> -
> CATool: Private Certificate Authority for Unix and Unix-like systems.
>
>
>
>
>
>
NB:
Have you read the reference manual ("doc/ref.html")?
Have you searched the mailing list archive (www.open.com.au/archives/radiator)?
Have you had a quick look on Google (www.google.com)?
Have you included a copy of your configuration file (no secrets),
together with a trace 4 debug showing what is happening?
--
Radiator: the most portable, flexible and configurable RADIUS server
anywhere. Available on *NIX, *BSD, Windows, MacOS X.
Includes support for reliable RADIUS transport (RadSec),
and DIAMETER translation agent.
-
Nets: internetwork inventory and management - graphical, extensible,
flexible with hardware, software, platform and database independence.
-
CATool: Private Certificate Authority for Unix and Unix-like systems.
More information about the radiator
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