Hi all
Can somebody tell me which ports are needed to open on a firewall so HostMon is able to proceed it's test?
Currently we are not using any RMAs on the servers which should be tested by HostMon
Thanks for your comments
Best regards
Thorsten
HostMon behind firewall
We got this question everyday. Somehow a lot of people do not understand - in order to check standard Windows and Internet services HostMonitor should use standard ports assigned for these services.
This means everything depends on what exactly service you are checking.
E.g.
FTP protocol uses TCP ports 20 and 21
SMTP protocol uses TCP port 25
DNS protocol uses port 53
POP3 protocol uses port 110
IMAP protocl uses port 143
NTP protocol uses port 123
HTTP protocl uses port 80
HTTPS protocl uses port 443
LDAP protocol uses port 389
SNMP protocol uses port 161 (162 for SNMP Traps)
Sure, some specific servers can be configured to use non-standard TCP/UDP ports. If you don't know what ports are used by your servers, you should ask your network administrator.
HostMonitor calls network client installed on your system to perform the following tests:
- UNC
- Drive free space
- File/Filder availability
- Folder/file size
- Count files
- File integrity
- Text log
- Compare file, etc.
This means used ports and protocols depend on network client you are using.
E.g. NETBIOS over TCP uses ports 137-139, 445. If you are using different network client, please check the manual that comes with your network client.
HostMonitor uses Windows RPC for the following test methods:
- NT eventlog test
- Services test
- Process
- Dominant Process
- Performance counter test
- CPU usage
- WMI test
Windows RPC calls may use any port above 1024.
How to configure RPC dynamic port allocation to work with firewalls
http://support.microsoft.com/kb/154596
Another useful article from Microsoft: network port requirements for the Windows Server system
http://support.microsoft.com/kb/832017
On the other hand, firewall that passes thru NETBIOS, RPC, DCOM traffic does not have much sense. If you need to monitor remote network protected by firewall, we strongly recommend using RMA
http://www.ks-soft.net/hostmon.eng/rma-win/index.htm
Regards
Alex
This means everything depends on what exactly service you are checking.
E.g.
FTP protocol uses TCP ports 20 and 21
SMTP protocol uses TCP port 25
DNS protocol uses port 53
POP3 protocol uses port 110
IMAP protocl uses port 143
NTP protocol uses port 123
HTTP protocl uses port 80
HTTPS protocl uses port 443
LDAP protocol uses port 389
SNMP protocol uses port 161 (162 for SNMP Traps)
Sure, some specific servers can be configured to use non-standard TCP/UDP ports. If you don't know what ports are used by your servers, you should ask your network administrator.
HostMonitor calls network client installed on your system to perform the following tests:
- UNC
- Drive free space
- File/Filder availability
- Folder/file size
- Count files
- File integrity
- Text log
- Compare file, etc.
This means used ports and protocols depend on network client you are using.
E.g. NETBIOS over TCP uses ports 137-139, 445. If you are using different network client, please check the manual that comes with your network client.
HostMonitor uses Windows RPC for the following test methods:
- NT eventlog test
- Services test
- Process
- Dominant Process
- Performance counter test
- CPU usage
- WMI test
Windows RPC calls may use any port above 1024.
How to configure RPC dynamic port allocation to work with firewalls
http://support.microsoft.com/kb/154596
Another useful article from Microsoft: network port requirements for the Windows Server system
http://support.microsoft.com/kb/832017
On the other hand, firewall that passes thru NETBIOS, RPC, DCOM traffic does not have much sense. If you need to monitor remote network protected by firewall, we strongly recommend using RMA
http://www.ks-soft.net/hostmon.eng/rma-win/index.htm
Regards
Alex
