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Posted to users@tomcat.apache.org by Bill Barker <wb...@wilshire.com> on 2008/01/19 03:35:35 UTC
Re: Filtering the apache clients
"Caldarale, Charles R" <Ch...@unisys.com> wrote in message
news:2828B04F0113CD468E6D1D51DF4362A4048F5117@USEA-EXCH2.na.uis.unisys.com...
>> From: jean-louis.mateo@bull.net [mailto:jean-louis.mateo@bull.net]
>> Subject: Filtering the apache clients
>>
>> Is there any way of configuring the Tomcat <Connector> to
>> only accept AJP connections from a specific apache server?
>
>1) Comment out the other <Connector> elements.
>
>2) Configure the RemoteAddrValve for the desired IP address:
>http://tomcat.apache.org/tomcat-6.0-doc/config/valve.html#Remote%20Address%20Filter
>
This won't work, since under AJP/1.3 the "Remote Address" is the address of
the client that connects to Apache, not the address of the Apache machine.
>From a quick code check, it looks like the "secure" option isn't supported
any longer in mod_jk (it was never that secure to begin with). You can
duplicate it by setting:
JkEnvVar MyAuthCode password
in trusted Apache's, and write a filter that rejects requests that don't
have a Request attribute of MyAuthCode with value "password". Of course, it
is only as secure as your way to secure the name and value.
If you want to restrict access to only the copy of Apache running on the
same machine as Tomcat, then you can do:
<Connector protocol="AJP/1.3" address="localhost" ...... />
For any other configuration, you should really have a firewall between the
internet and Tomcat.
>- Chuck
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RE: Filtering the apache clients
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: news [mailto:news@ger.gmane.org] On Behalf Of Bill Barker
> Subject: Re: Filtering the apache clients
>
> This won't work, since under AJP/1.3 the "Remote Address" is
> the address of the client that connects to Apache, not the
> address of the Apache machine.
Ahah - thanks for the correction.
- Chuck
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Re: Filtering the apache clients
Posted by Bill Barker <wb...@wilshire.com>.
"Bill Barker" <wb...@wilshire.com> wrote in message
news:fmrnle$9af$1@ger.gmane.org...
>
> "Caldarale, Charles R" <Ch...@unisys.com> wrote in message
> news:2828B04F0113CD468E6D1D51DF4362A4048F5117@USEA-EXCH2.na.uis.unisys.com...
>>> From: jean-louis.mateo@bull.net [mailto:jean-louis.mateo@bull.net]
>>> Subject: Filtering the apache clients
>>>
>>> Is there any way of configuring the Tomcat <Connector> to
>>> only accept AJP connections from a specific apache server?
>>
>>1) Comment out the other <Connector> elements.
>>
>>2) Configure the RemoteAddrValve for the desired IP address:
>>http://tomcat.apache.org/tomcat-6.0-doc/config/valve.html#Remote%20Address%20Filter
>>
>
> This won't work, since under AJP/1.3 the "Remote Address" is the address
> of the client that connects to Apache, not the address of the Apache
> machine. From a quick code check, it looks like the "secure" option isn't
> supported any longer in mod_jk (it was never that secure to begin with).
> You can duplicate it by setting:
> JkEnvVar MyAuthCode password
> in trusted Apache's, and write a filter that rejects requests that don't
> have a Request attribute of MyAuthCode with value "password". Of course,
> it is only as secure as your way to secure the name and value.
>
You can also use a filter that checks request.getLocalName() (which is the
name of the Apache server) against the allowed servers. But again, this is
easy enough to spoof, since TC trusts the name it was sent. As a variant,
you can also use IP-based VHosts in Tomcat (which directs off of LocalName),
but this suffers from the same weakness.
> If you want to restrict access to only the copy of Apache running on the
> same machine as Tomcat, then you can do:
> <Connector protocol="AJP/1.3" address="localhost" ...... />
> For any other configuration, you should really have a firewall between the
> internet and Tomcat.
>
>
>
>
>>- Chuck
>
>
>
>
>
>
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>
>
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