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Audit issues [message #20311]

Sat, 15 September 2007 14:04

dagr
Messages: 83
Registered: February 2006

Member

Lets say i put all users into vpss to secure HN.
How can i check for nonlegacy processes/open ports now ? The legacy processes inside vpss and in HN look identical .

[openvz@ws4-ca vps_dev]$ sudo lsof -ni :22                                      
COMMAND   PID USER   FD   TYPE   DEVICE SIZE NODE NAME                          
sshd     4309 root    3u  IPv4 11706901       TCP *:ssh (LISTEN)                
sshd     4875 root    3u  IPv4  2540319       TCP *:ssh (LISTEN)                
sshd     8888 root    3u  IPv4 52596488       TCP *:ssh (LISTEN)                
sshd    13142 root    3u  IPv4 50829731       TCP *:ssh (LISTEN)                
sshd    18998 root    3u  IPv4 23048176       TCP *:ssh (LISTEN)                
sshd    22560 root    3u  IPv4  8446568       TCP *:ssh (LISTEN)                
sshd    23212 root    3u  IPv4 52624431       TCP *:ssh (LISTEN)                
sshd    23231 root    3u  IPv4 52624458       TCP 192.168.10.30:ssh->192.168.100
.113:4092 (ESTABLISHED)                                                         
sshd    23236 dagr    3u  IPv4 52624458       TCP 192.168.10.30:ssh->192.168.100
.113:4092 (ESTABLISHED)                                                         
sshd    25431 root    3u  IPv4  8451518       TCP *:ssh (LISTEN)                
sshd    27287 root    3u  IPv4  8453252       TCP *:ssh (LISTEN)                
sshd    27417 root    3u  IPv4 11736494       TCP *:ssh (LISTEN)

[openvz@ws4-ca vps_dev]$ netstat -ltn  | grep 22                                
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN                                                                              
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LIST
EN

Also all ports are shown like open on 0.0.0.0 , though they actually restricted to ips of vps.

So - the question - how can i distinguish vps and HN processes / ports / etc (looking from HN) ?

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Re: Audit issues [message #20341 is a reply to message #20311]

Mon, 17 September 2007 06:44

vaverin
Messages: 708
Registered: September 2005

Senior Member

You can close ports on HN via iptables (and probably change default ports). Then you can look at the processes/ports inside VE by using "vzctl exec" command.

Also you can translate PID -> VEnum via /proc/<pid>/status file,

$ grep envID /proc/self/status
envID: 9027

I hope it helps you.

thank you,
Vasily Averin

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Re: Audit issues [message #20342 is a reply to message #20341]

Mon, 17 September 2007 06:55

vaverin
Messages: 708
Registered: September 2005

Senior Member

Hi again,

It looks like I've found more useful link for you:
http://wiki.openvz.org/Processes_scope_and_visibility

thank you,
Vasily Averin

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Re: Audit issues [message #20356 is a reply to message #20342]

Mon, 17 September 2007 09:14

dagr
Messages: 83
Registered: February 2006

Member

Quote:

Also you can translate PID -> VEnum via /proc/<pid>/status file,

$ grep envID /proc/self/status
envID: 9027

Thanks , very helpful .
main point you cant do "vzctl exec 0 ", so /proc envID is solution.

vzps also ok,saves time for writing script , but for ports i will need to write script anyway , getting pid via lsof and eventually VEID.

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