Bug 155149 - Transport mode (Host to Host) IPsec configured with system-config-network will not work
Transport mode (Host to Host) IPsec configured with system-config-network wil...
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: system-config-network (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Harald Hoyer
: 155148 (view as bug list)
Depends On:
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Reported: 2005-04-17 01:39 EDT by Michael Kearey
Modified: 2007-11-30 17:07 EST (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2006-11-21 03:49:44 EST
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Altered ifup-ipsec file (7.48 KB, text/plain)
2005-04-17 01:41 EDT, Michael Kearey
no flags Details
A patch file to make the change (1.13 KB, text/plain)
2005-04-17 01:43 EDT, Michael Kearey
no flags Details

  None (edit)
Description Michael Kearey 2005-04-17 01:39:21 EDT
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 01:41:42 EDT
Created attachment 113278 [details]
Altered ifup-ipsec file

Altered ifup-ipsec file to 'make it work'
Comment 2 Michael Kearey 2005-04-17 01:43:24 EDT
Created attachment 113279 [details]
A patch file to make the change

Feeble patch that changes four lines..
Comment 3 Michael Kearey 2005-04-17 06:07:18 EDT
*** Bug 155148 has been marked as a duplicate of this bug. ***
Comment 4 Bill Nottingham 2005-04-18 11:40:28 EDT
Assigning to s-c-network; looks like it wrote a bad config.
Comment 5 RHEL Product and Program Management 2006-08-18 13:44:25 EDT
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
Comment 7 Harald Hoyer 2006-11-15 06:27:20 EST
err... are you sure you reversed the IN and OUT on one side? I think this is a
configuration error, not a software bug. Please attach the
/etc/sysconfig/networking/ifcfg-* files of both sides.
Comment 8 Michael Kearey 2006-11-21 01:44:01 EST

Looks like there has been a whole lot of work done since this bug was reported.
I used the latest s-c-network and configured a Host to Host manaual connect and
it works straight away. 

Close as NOTABUG ??


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