Open ports from source to destination


 
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# 1  
Old 01-16-2020
Open ports from source to destination

Is there a way to find out all the ports open between source IP & destination IP in any way ?
# 2  
Old 01-16-2020
If you have access to switches in LAN network or access to both hosts to examine configuration and traffic, yes.
Otherwise, you will not get advice here about 'hacking' tools or their usage, if question is related to remote stuff

Hope that helps
Regards
Peasant.
# 3  
Old 01-17-2020
Oh no, I am happy with my job, not into hacking. I have access to both hosts, need some command like netstat which will let me know the ports open from source to destination. I need to forward some application logs from source to destination.
# 4  
Old 01-17-2020
I use basic port scan tools; as all sys admins should do port scans from time-to-time to check open ports (basic IT security).

From a quick Goggle search:

Code:
8 Port Scanner Tools for Network Administrator
1 TCP Port Scanner.
2 Nmap.
3 Netcat.
4 Port Authority.
5 Advanced Port Scanner.
6 Network Scanner by MiTeC.
7 PortQryUI.
8 NetScanTools.

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# 5  
Old 01-17-2020
Hi
Maybe this will help?
Code:
ss -t -o state established

--- Post updated at 16:07 ---

Code:
ss -t -o state connected
ss -t -o state synchronized

These 3 Users Gave Thanks to nezabudka For This Post:
# 6  
Old 01-17-2020
I not sure that ss is the tool the OP is looking for.

ss is similar to netstat, giving information on the state of sockets.

However, when the OP asks:

Quote:
Is there a way to find out all the ports open between source IP & destination IP in any way ?
It's not clear to me the OP is looking for netstat-like information, which can be read from a host which we have access to ss and netstat (or even lsof) , but external to the hosts.

Let's see what the OP really wants Smilie
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# 7  
Old 01-17-2020
Check firewall-cmd or iptables -L (depending on linux release and type) rules for specific rules, containing IP addresses in questions.
This should help, if linux firewall is used.

If not, other advice given here (ss netstat nmap) should provide reasonable info.

Please, when asking such question in future, please specify your operating system and version.
This will help us help you.

Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
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