On my source server, I have SSHPASS, but not on my jump servers, and I don't have SSH KEY on either my jump or my target servers
Of course, I can't put SSHKEY neither on my JUMP nor on my TARGET
I can't install SSHPASS on my JUMP servers either
Can I access my target server through my jump server, using the sshpass of my source server?
+-----------------+ +-----------------+ +-----------------+
| | | | | |
| Server: Source +-----------> Server: Jump +-----> Server: Target |
| sshpass: OK | | sshpass: NO | | |
| | | No SSH KEY | | No SSH KEY |
+---------+-------+ +-----------------+ +-----------------+
|
| +-----------------+ +-----------------+
| | | | |
| | Server: Jump | | Server: Target |
+-------------------> sshpass: NO +-----> |
| | No SSH KEY | | No SSH KEY |
| +-----------------+ +-----------------+
|
| +-----------------+ +-----------------+
| | | | |
| | Server: Jump | | Server: Target |
+-------------------> sshpass: NO +-----> |
| | No SSH KEY | | No SSH KEY |
| +-----------------+ +-----------------+
|
| +-----------------+ +-----------------+
| | | | |
| | Server: Jump | | Server: Target |
+-------------------> sshpass: NO +-----> |
| No SSH KEY | | No SSH KEY |
+-----------------+ +-----------------+
Related
I'm trying to run on-demand yara scan in osqueryi using 'pattern' constraints but that column is not there and getting error below. Am i missing something on how to use pattern constraints?
select * from yara where pattern="/bin/%sh" and sig_group="sig_group_1";
Error: no such column: pattern
Just referencing the osquery yara documentation here that i followed:
https://osquery.readthedocs.io/en/stable/deployment/yara/
osquery> SELECT * FROM yara WHERE pattern="/bin/%sh" AND sigfile="/Users/wxs/sigs/baz.sig";
+-----------+---------+-------+-----------+-------------------------+----------+
| path | matches | count | sig_group | sigfile | pattern |
+-----------+---------+-------+-----------+-------------------------+----------+
| /bin/bash | | 0 | | /Users/wxs/sigs/baz.sig | /bin/%sh |
| /bin/csh | | 0 | | /Users/wxs/sigs/baz.sig | /bin/%sh |
| /bin/ksh | | 0 | | /Users/wxs/sigs/baz.sig | /bin/%sh |
| /bin/sh | | 0 | | /Users/wxs/sigs/baz.sig | /bin/%sh |
| /bin/tcsh | | 0 | | /Users/wxs/sigs/baz.sig | /bin/%sh |
| /bin/zsh | | 0 | | /Users/wxs/sigs/baz.sig | /bin/%sh |
+-----------+---------+-------+-----------+-------------------------+----------+
osquery>
And the table schema of yara don't have column 'pattern' either:
https://osquery.io/schema/4.8.0/#yara
Those linked docs appear to be out of date. As you point out, there is no pattern column.
It looks like you should be able to use a pattern on path. From the examples in the source code:
select * from yara where path LIKE '/etc/%'
(I don't use yara, and can't easily confirm this)
I'd like to get the number of each column's empty value, so I tried
ele_df.where(ele_df['Shipment_ID'].isNotNull()).select('Shipment_ID').show()
But it returns me the empty value, it seems it consider the empty value as a non-null value.
+------------------+
|Shipment_ID|
+------------------+
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
+------------------+
Could you guys help me with this?
I'm working on designing an OIDC Relying Party (SP), which should work with most of the popular OIDC Providers (IDPs). I requested to allow authentication and authorization also for clients that are not web applications. Is it recommended to work with OIDC in case there is no browser in the client? Which flow is the most recommended for this case? Are the most IDPs support such flow (with no browser)?
Many OpenID Connect providers use some form of "Device Flow"
This is one example https://auth0.com/blog/oauth-device-flow-no-hassle-authentication-as-seen-on-tv/
Google for Device Flow and you can find many.
There's a draft specification for Client Initiated Backchanel Authentication (CIBA) flow (https://openid.net/specs/openid-client-initiated-backchannel-authentication-core-1_0.html).
This would work from a device which doesn't have a browser. Essentially the client makes an authentication request and the OpenID Provider (OP) authenticates using an Authentication Device (AD), usually a smartphone.
When the user is authenticated the client recieves the tokens either by poll, ping or push.
From the docs the flows look like this...
CIBA Poll Mode is illustrated in the following diagram:
+--------+ +--------+
| | | |
| |<---(1) CIBA Request-------------------------->| |
| | | |
| | +--------+ | |
| | | | | |
| Client | | AD |<--(2) User interactions---------->| OP |
| | | | | |
| | +--------+ | |
| | | |
| |----(3a) CIBA Polling Request----------------->| |
| |<---(3b) CIBA Polling Response-----------------| |
| | ... | |
| |----(3a) CIBA Polling Request----------------->| |
| |<---(3b) CIBA Polling Response-----------------| |
| | | |
+--------+ +--------+
CIBA Ping Mode is illustrated in the following diagram:
+--------+ +--------+
| | | |
| |<---(1) CIBA Request-------------------------->| |
| | | |
| | +--------+ | |
| | | | | |
| Client | | AD |<--(2) User interactions---------->| OP |
| | | | | |
| | +--------+ | |
| | | |
| |<---(3) CIBA Ping Callback---------------------| |
| | | |
| |----(4a) CIBA Token Request------------------->| |
| |<---(4b) CIBA Token Response-------------------| |
+--------+ +--------+
CIBA Push Mode is illustrated in the following diagram:
+--------+ +--------+
| | | |
| |<---(1) CIBA Request-------------------------->| |
| | | |
| | +--------+ | |
| | | | | |
| Client | | AD |<--(2) User interactions---------->| OP |
| | | | | |
| | +--------+ | |
| | | |
| |<---(3) CIBA Push Callback---------------------| |
| | | |
+--------+ +--------+
I'm making a UWP (Windows 10) app. I'd like to know, is it possible to change the orientation of a SplitView? Typically, it's ordered like this:
______________________________________________
| | |
| | |
| | |
| | |
| | |
| Pane | Content |
| | |
| | |
| | |
| | |
| | |
----------------------------------------------
Is it possible to change the orientation to:
______________________________________________
| |
| |
| Pane |
| |
| |
| |
----------------------------------------------
| |
| |
| |
| |
| Content |
| |
| |
| |
----------------------------------------------
It is not supported by the platform (SplitVew.PanePlacement property can only be left or right).
You can likely achieve a somewhat similar affect by placing a command bar at the top of your application.
What are segments in Lucene?
What are the benefits of segments?
The Lucene index is split into smaller chunks called segments. Each segment is its own index. Lucene searches all of them in sequence.
A new segment is created when a new writer is opened and when a writer commits or is closed.
The advantages of using this system are that you never have to modify the files of a segment once it is created. When you are adding new documents in your index, they are added to the next segment. Previous segments are never modified.
Deleting a document is done by simply indicating in a file which document of a segment is deleted, but physically, the document always stays in the segment. Documents in Lucene aren't really updated. What happens is that the previous version of the document is marked as deleted in its original segment and the new version of the document is added to the current segment. This minimizes the chances of corrupting an index by constantly having to modify its content when there are changes. It also allows for easy backup and synchronization of the index across different machines.
However, at some point, Lucene may decide to merge some segments. This operation can also be triggered with an optimize.
A segment is very simply a section of the index. The idea is that you can add documents to the index that's currently being served by creating a new segment with only new documents in it. This way, you don't have to go to the expensive trouble of rebuilding your entire index frequently in order to add new documents to the index.
The segment benefits have been answered already by others. I will include an ascii diagram of a Lucene Index.
Lucene Segment
A Lucene segment is part of an Index. Each segment is composed of several index files. If you look inside any of these files, you will see that it holds 1 or more Lucene documents.
+- Index 5 ------------------------------------------+
| |
| +- Segment _0 ---------------------------------+ |
| | | |
| | +- file 1 -------------------------------+ | |
| | | | | |
| | | +- L.Doc1-+ +- L.Doc2-+ +- L.Doc3-+ | | |
| | | | | | | | | | | |
| | | | field 1 | | field 1 | | field 1 | | | |
| | | | field 2 | | field 2 | | field 2 | | | |
| | | | field 3 | | field 3 | | field 3 | | | |
| | | | | | | | | | | |
| | | +---------+ +---------+ +---------+ | | |
| | | | | |
| | +----------------------------------------+ | |
| | | |
| | | |
| | +- file 2 -------------------------------+ | |
| | | | | |
| | | +- L.Doc4-+ +- L.Doc5-+ +- L.Doc6-+ | | |
| | | | | | | | | | | |
| | | | field 1 | | field 1 | | field 1 | | | |
| | | | field 2 | | field 2 | | field 2 | | | |
| | | | field 3 | | field 3 | | field 3 | | | |
| | | | | | | | | | | |
| | | +---------+ +---------+ +---------+ | | |
| | | | | |
| | +----------------------------------------+ | |
| | | |
| +----------------------------------------------+ |
| |
| +- Segment _1 (optional) ----------------------+ |
| | | |
| +----------------------------------------------+ |
+----------------------------------------------------+
Reference
Lucene in Action Second Edition - July 2010 - Manning Publication