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PIX 515E max allowed xlates

s.gilbrook
Level 1
Level 1

Can anybody tell me what the maximum number of (simaltaneous) inbound and outbound xlates is on a PIX 515E ?

We have a requirement to allow a group of internal hosts (1500+) outbound access to a specific IP host, this external host then has to create an inbound connection back to the originating host in order to establish the connection.

I am concerned that the 515E may experience performance issues with this number of outbound and inbound connections runnning simaltaneously.

I had originally planned to use PAT, until I found out the external host required an inbound connection to client !

Thanks in advance.

1 Reply 1

aashish.c
Level 4
Level 4

Hi,

on PIX after specifying NAT, there is an option to specify max_conn, if you sopecify 0 there then it mean unlimited connections can go through that pix.

on PIX, you can use PAT. With PAT you can use 64000 hosts to access the same IP. In this scenario you can use PAT :

you can give the command

global (outside) 1 interface

and make an access-list to permit that external hosts to come inside the network and apply that ACL to "in" direction of outside interface.

kindly update for further queries.

regards

aashish C

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