Re: Win2K, IPsec, and allowing outbound HTTP/FTP traffic

From: Jeri Morris (jerimorris2000_at_yahoo.com)
Date: 08/06/03


Date: Wed, 6 Aug 2003 10:07:06 -0700


Just tried that, and my Win2K box still isn't able to
initiate outbound traffic.

I disabled the All Inbound rule temporarily, and *was*
able to initiate outbound traffic, so even though that
rule is specific to inbound traffic, it seems to be what's
causing the problem. It's set up as follows:

Source address: Any IP Address
Destination address: My IP Address
Mirrored: No (changing to Yes doesn't make a difference)
Protocol type: Any

I added the following filters to my All Outbound rule to
no avail:

Filter Action: Permit
Source: My IP address
Destination: Any IP address
Mirrored: Yes

Protocol Type: TCP / Source port: Any / Destination port:
80
Protocol Type: TCP / Source port: Any / Destination port:
53
Protocol Type: TCP / Source port: Any / Destination port:
7 (ping)
Protocol Type: TCP / Source port: Any / Destination port:
Any
Protocol Type: Any

This should more than allow any outbound traffic, but I
still can't get from my Win2K box to the outside world
through HTTP or even Ping.

I can't help but think that it's something stupid. Any
suggestions for things (even stupid things) to look for?

Jeri Morris jerimorris2000@yahoo.com

>-----Original Message-----
>Hi Jeri. At first glance it looks like the all outbound
rule would permit that,
>but apparently the block all inbound is countering it for
the return connection
>ports. I would try to add specific rules for the outbound
ports you want and
>mirror them. For instance: source address - my address,
destination address -
>any [or specific list], source port - any, destination
port - 80, protocol -
>tcp. You may also need to add dns port 53 outbound for
internet access,
>depending on your dns setup. -- Steve
>
>
>"Jeri Morris" <jerimorris2000@yahoo.com> wrote in message
>news:008701c35b68$9aeac770$a301280a@phx.gbl...
>> I have a Windows 2000 server that's used only as a
web/ftp
>> server, and is otherwise accessible only through
Terminal
>> Services. It's not used as a file or print server.
>>
>> I have IPsec set up as follows:
>>
>> Permit:
>>
>> (All of the following are mirrored, matching packets
with
>> the exact opposite source and destination addresses.)
>> - HTTP (TCP and UDP port 80)
>> - Terminal Services (TCP port 3389 and RDP)
>> - FTP (TCP ports 20 and 21)
>>
>> Permit:
>>
>> - All outbound traffic (also mirrored)
>>
>> Block:
>>
>> - All inbound traffic (not mirrored)
>>
>> This allows the server to handle all incoming HTTP and
FTP
>> traffic and blocks all other inbound traffic. However,
>> unfortunately, it also blocks outbound HTTP and FTP
>> requests. I can't use a browser (e.g., for Windows
Update)
>> or FTP to get from my server to anything else.
>>
>> Any suggestions on what I need to do to enable outbound
>> HTTP and FTP?
>>
>> Thanks very much.
>>
>> Jeri Morris jerimorris2000@yahoo.com
>
>
>.
>



Relevant Pages

  • Re: Software vs. Hardware firewall
    ... > Someone mentioned in a post that hardware firewalls don't catch outbound ... So I stop all outbound NetBIOS by setting ports 135-139, ... and port 22 to go to my inbound ssh server. ... to be 100% on the Internet - which I've never tried. ...
    (comp.security.firewalls)
  • Re: ISA 2004 Publishing Rule ?
    ... I would clarify on whether they need inbound access to your network or not. ... Considering that your only TCP port is listed as outbound only, I'm going to guess that you'll be fine with outbound only. ... Since there is no need opening up inbound unless you absolutely have to, I would configure ISA to allow this traffic outbound and see if it works. ...
    (microsoft.public.windows.server.sbs)
  • Re: opening ISA Ports
    ... > They gave me a port range for outbound traffic of 2100-4000 ... connections are initiated on a single outbound port. ... with inbound secondary connections that are ...
    (microsoft.public.windows.server.sbs)
  • Re: Will Exchange using nonstandard port cause problems with Sharepoint?
    ... about changing the std outbound port of Exchange. ... 'SmallBusiness SMTP Connector'. ... Next, click on the Advanced tab, then Outbound Security,, then Basic ...
    (microsoft.public.windows.server.sbs)
  • Re: What are the alternatives
    ... if the router you have doesn't have a log viewer to view inbound ... and outbound to/from the router. ... outbound by port, protocol or IP behind the router. ...
    (comp.security.firewalls)