MikroTik

Hi,

I am using 1:1 IP mapping to map a real IP subnet to a private subnet.

private public
10.30.30.1-127 <--> x.x.x.1-127

That works fine and without problems.
Usually, when a user has 10.30.30.40 as private IP, he is mapped to x.x.x.40.
That was my intention. But sometimes it happens that he gets x.x.x.41.


Is it possible to "force-map" 40 to 40, 45 to 45, 46 to 46 and so on?
or
Is there a log, that tells me when a certain private IP as mapped to a certain public IP?



KR

instead of Many-to-Many you can use One-to-One MAP, In that case you have to configure seperate rules for each mapping

are you using SAME or NETMAP action ?

Sam

ashish:
I thought about this solution, but adding 127 rules manually keept me from doing this so far.

changeip:
i am using "netmap" action. is that correct?

yes, NETMAP is the one you want. Can you post an export of your nat chain ?

/ip firewall nat export

(then just paste that rule here so we can see)

Sam

add action=netmap chain=dstnat comment="" disabled=no dst-address=85.x.x.1-85.x.x.127 \
to-addresses=10.30.30.1-10.30.30.127 to-ports=0-65535
add action=netmap chain=srcnat comment="" disabled=no src-address=10.30.30.1-10.30.30.127 \
to-addresses=85.x.x.1-85.x.x.127 to-ports=0-65535

(i have added some x-es in the post here for security)

you wish to map 128 ip to 128 client? i think you need to do 128 rules. if you do this config, the router would choose by itself and it's random

shilder, thats what netmap is for, 128 identical rules is a PIA.

Try this:

add action=netmap chain=dstnat comment="" disabled=no dst-address=85.x.x.0/25 \
to-addresses=10.30.30.0/25 to-ports=0-65535

Sam