Legato Networker: How to backup a Remote Host

[BackupAdmin123]

Hi,

The company where I am working for does have two sites, which are separated from each other.
One site is for all users within the company and the other one is for retail related things.
It's possible to lookup servers/computers and stuff in Site2 but connected at Site2 it's not possible to lookup servers/computers in Site1.

We would like to backup three servers which are located in Site2 and add them as clients to our Backup Server in Site1.
Now we have to open some ports on the firewall in Site2, but can someone maybe tell me which ports to open, so that we can successfull install the client on Site2 to see our Backup server in Site1?

We first were thinking about configuring a storage node on those servers, but I think it will be much easier to configure them as normal backup clients on our Backup server, so I hope someone can tell me how we can achieve this.

We have an VLS6000-series that should be able to backup those clients in Site2.

Hope someone can help or put me in the right direction!

Many thanks!
Hans

 

[605]

The client service incoming ports are fixed to 7937 and 7938.

 

[BackupAdmin123]

Thanks!
These are the only ports that needs to be opened to get a successfull connection between backup server and client server? Probably some DNS changes and that should be it?

Many thanks for your quick reply!

 

[605]

These are the 2 listening (incoming) ports a NW client uses. There are more outgoing ports (depending on the workload) but those are not considered to be dangerous as they send data.

 

[a060463xyz]

You have to "limit" the port usage of the networker server :
nsrports -S 7937-7937+n.

n has to be calculated like the following :

If you have Nw 7.4 or later :
12 + (2* <number of diveces) + <number of Libraries)

If you have an earlier Version n is decreased by one.

A Client should habve at least for ports :
nsrports -S 7937-7941

a Storage Node needs 4 ports and additional 2 ports per defines device.

 

[BackupAdmin123]

Hi,

Thanks for this explanation, because I was reading something about several hundred ports needs to be opened on the firewall, but you're saying that in our situation we need less ports to be opened.

We have 19 tape-drives (16 on our backup server and 3 storage nodes) and 1 Virtual Library.

12 + 38 (2x19) + 1 = 51 ports?

We only have Networker 7.3.2 but we are planning to update our Networker version within the upcoming months.
If I ask our fire-wall specialist to open ports 7937 - 7988 then this will be enough to make a backup of this server?

Many thanks!

 

[a060463xyz]

I would use 52 ports because a vtl is a library too