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Bug 155148 - Transport mode (Host to Host) IPsec configured with system-config-network will not work
Summary: Transport mode (Host to Host) IPsec configured with system-config-network wil...
Status: CLOSED DUPLICATE of bug 155149
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: initscripts
Version: 4.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Bill Nottingham
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2005-04-17 05:08 UTC by Michael Kearey
Modified: 2014-03-17 02:53 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2005-04-17 10:07:11 UTC
Target Upstream Version:

Attachments (Terms of Use)
Altered ifup-ipsec file (deleted)
2005-04-17 05:39 UTC, Michael Kearey
no flags Details

Description Michael Kearey 2005-04-17 05:08:04 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050322 Firefox/1.0.2 Red Hat/1.0.2-1.4.1

Description of problem:
The system-config-network tool with the choices for both hosts:

Nickname: ipsec0
Host to Host Encryption
Manual with a fixed key (use the same keys in both hosts)
Provide the IP address of the end point (s) at each host

After running ifup ipsec0 on both hosts, I can see packets leaving for the IPsec host to host destination, and arriving at the destination with tcpdump. They appear to be encapsulated ok, but tcp communications seems to be impossible. It does not work.

I altered the /etc/sysconfig/network-scripts/ifup-ipsec file (See the attached one) and it now works. SPI_AH_IN and SPI_AH_OUT, and SPI_ESP_IN and SPI_ESP_OUT  seem to be round the wrong way. 

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.Run system-config-network to configure host to host encryption
2. Do ifup ipsec0 on the two hosts
3. Try sending and receiving packets to and from the two hosts

Actual Results:  No tcp communication through the encrypted link can happen

Expected Results:  tcp communication should work

Additional info:

Note that I have not tested any other configurations, just the host to host 'transport' mode.

This affects Red Hat Enterprise Linux 3, 4 and Fedora Core.

Comment 1 Michael Kearey 2005-04-17 05:39:02 UTC
Created attachment 113277 [details]
Altered ifup-ipsec file

Full file with alterations to 'make it work'

Comment 2 Michael Kearey 2005-04-17 10:07:11 UTC

*** This bug has been marked as a duplicate of 155149 ***

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