Re: [Leaf-user] Forwarding broadcast traffic?
Microsofts new dhcp server now supports setting internet explorers proxy address through dhcp, is there any linux dhcp server which already supports this? If thats a yes is there an lrp package for it. And yes I know they don't follow the official RFC by doing that but hey it would be practical in my environment and I am pretty much affraid that this will be the argument to go back to a windows based dhcp server otherwise. Actually, there's been room left in the DHCP specification for vendor specific extensions. The dhcp server provided with Dachstein supports sending arbitrary settings to the dhcp clients...you just need to know the option numbers used for the custom extensions. From the dhcp-options man page: The documentation for the various options mentioned below is taken from the latest IETF draft document on DHCP options. Options which are not listed by name may be defined by the name option-nnn, where nnn is the decimal number of the option code. These options may be followed either by a string, enclosed in quotes, or by a series of octets, expressed as two-digit hexadecimal numbers seper ated by colons. For example: option option-133 my-option-133-text; option option-129 1:54:c9:2b:47; Because dhcpd does not know the format of these undefined option codes, no checking is done to ensure the correct ness of the entered data. Charles Steinkuehler http://lrp.steinkuehler.net http://c0wz.steinkuehler.net (lrp.c0wz.com mirror) ___ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
RE: [Leaf-user] Forwarding broadcast traffic?
You might want to check the dhcp server mailing list: http://www.isc.org/services/public/lists/dhcp-lists.html. Dhcpd 3 lets you define arbitrary options, but I don't know whether that will suffice. AFAIK dhcpd 3 has not been lrp'd; it is much bigger than dhcpd 2. -Richard Microsofts new dhcp server now supports setting internet explorers proxy address through dhcp, is there any linux dhcp server which already supports this? If thats a yes is there an lrp package for it. And yes I know they don't follow the official RFC by doing that but hey it would be practical in my environment and I am pretty much affraid that this will be the argument to go back to a windows based dhcp server otherwise. Kim ___ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
RE: [Leaf-user] Forwarding broadcast traffic?
As taken from the man page of dhcp-options, DHCP2 supports: 'option www-server [address-list]' As I understand it, this lists the Web servers available to the client, and is primarily useful for defining proxy Web servers that a client must use. ...and: 'option smtp-server [address-list]' Which from my reading are said to be useful to Windows clients --- but I have yet to test this. Also important to determine: does the dhcpd, as packaged in LRP support the full command set? I'll take a look at this, and report back what I find. Dan Quoting Richard Doyle [EMAIL PROTECTED]: You might want to check the dhcp server mailing list: http://www.isc.org/services/public/lists/dhcp-lists.html. Dhcpd 3 lets you define arbitrary options, but I don't know whether that will suffice. AFAIK dhcpd 3 has not been lrp'd; it is much bigger than dhcpd 2. -Richard Microsofts new dhcp server now supports setting internet explorers proxy address through dhcp, is there any linux dhcp server which already supports this? If thats a yes is there an lrp package for it. And yes I know they don't follow the official RFC by doing that but hey it would be practical in my environment and I am pretty much affraid that this will be the argument to go back to a windows based dhcp server otherwise. Kim ___ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user ___ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
RE: [Leaf-user] Forwarding broadcast traffic?
The following is from the dhcp server archive at
http://www.isc.org/ml-archives/dhcp-server/2000/04/msg00183.html
From: Sami YOUSIF [EMAIL PROTECTED]
Date: Wed, 19 Apr 2000 13:54:59 -0500
Subject: Re: Proxy Setting
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***
Mark Borghardt wrote:
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I would like to set the Web Proxy in my NT clients. I noted a WWW
Server
option (#72) - what does this option do?
Mark Borghardt
360 Networks
That option usually sets the home page and not the proxy server.
For the browsers that support it (as of now, the only one that I know
that uses
it is IE5 {actually first appered in one of 4.0 versions; not sure
which;)
there is the WPAD method.
Using dhcpd 3.0+, it is possible to use the dhcp method... [thats why
when IE5
is set to autodetect all proxy settings it sends a DHCPINFORM packet to
the
dhcp server asking for more info]
the old draft is archived at
http://www.wrec.org/Drafts/draft-ietf-wrec-wpad-01.txt
(unfortunately it has expired in Dec 99; but the info in there still
works; I
cant seem to find the final or updated version)
in short its something like... (still... read the draft) :-)
option option-252 http://yourwebserver.yourdomain.com/proxy.pac;;
As taken from the man page of dhcp-options, DHCP2 supports:
'option www-server [address-list]'
As I understand it, this lists the Web servers available to
the client, and is
primarily useful for defining proxy Web servers that a client
must use.
...and:
'option smtp-server [address-list]'
Which from my reading are said to be useful to Windows
clients --- but I have
yet to test this. Also important to determine: does the
dhcpd, as packaged in
LRP support the full command set?
I'll take a look at this, and report back what I find.
Dan
Quoting Richard Doyle [EMAIL PROTECTED]:
You might want to check the dhcp server mailing list:
http://www.isc.org/services/public/lists/dhcp-lists.html.
Dhcpd 3 lets you define arbitrary options, but I don't know whether
that will suffice.
AFAIK dhcpd 3 has not been lrp'd; it is much bigger than dhcpd 2.
-Richard
Microsofts new dhcp server now supports setting internet
explorers proxy
address through dhcp,
is there any linux dhcp server which already supports this?
If thats a yes
is there an lrp package for it.
And yes I know they don't follow the official RFC by doing
that but hey it
would be practical in my environment and I
am pretty much affraid that this will be the argument to
go back to a
windows based dhcp server otherwise.
Kim
___
Leaf-user mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/leaf-user
Re: [Leaf-user] Forwarding broadcast traffic?
Is it possible to configure a set of LRP/LEAF routers to forward broadcast traffic accross a vpn link between the two subnets? If so, how would I go about configuring the boxes to take the traffic? It's possible, but I'm not sure exactly how...you may have to write code to do this. You may also be able to do something with NAT (ie NAT local broadcast address to remote directed broadcast address), seting up mirrored rules on each end for bi-directional communication. If this works at all, you'll have to put filtering rules in place to prevent loops (or you'll loose all your available bandwidth when the first broadcast packet hits your network). A bit of reading up on things like broadcast storms, beat-down, and TCP/IP networking fundamentals (especially the parts about why broadcast packets do NOT go through routers) would probably also be a good idea... Reading between the lines: If you're really asking how to get windows network neighborhood to show resources on both sides of your VPN link, please refer to Samba and/or M$ networking documentation. NOTE: For M$ networking to work properly this way, you must have NT domains that cross the VPN...Samba supports workgroup browsing across the VPN. Charles Steinkuehler http://lrp.steinkuehler.net http://c0wz.steinkuehler.net (lrp.c0wz.com mirror) ___ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
Re: [Leaf-user] Forwarding broadcast traffic?
Building off of Charles' comment: If you *are* looking to enable subnet-to- subnet browsing of Windows shares, Samba does the trick without much heartache at all. I have an SME/e-smith box on one end of my VPN lab setup, and a remote machine on the other end. The remote-end clients simply have the IP address of the SME box (default configured as a Master) in the WINS server configuration of the Windows IP configuration. The remote clients report themselves to the Master, and it in turn re-advertises their existence to the local subnet. So all Windows clients on a 10.1.2.0/24 network can see all Windows clients thru the tunnel on a 192.168.1.0/24 subnet (and vice versa), thru an intervening 174.16.1.0/24 simulated internet. Works slick. If you want a braindead-easy Samba server (and really a complete drop-in Linux replacement for NT server) see the details at www.e-smith.org. It's open source and freely distributed, with commercial support if desired. My primary fileserver runs 2 60 GB disk RAID 1, on a P100 throw-away. Free. And I mean, braindead easy... Dan Quoting Ed Zahurak [EMAIL PROTECTED]: Is it possible to configure a set of LRP/LEAF routers to forward broadcast traffic accross a vpn link between the two subnets? If so, how would I go about configuring the boxes to take the traffic? Thanks, Ed Z. ___ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user ___ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
