Hi,

Before switching to an hardened Linux with iptables, I'll try to ask yet
here for
a trouble with CP.
At now I didn't found answers in internet and on the CheckPoint website
there are some,
but I have to pay to read them and I dislike that very much.

By the way, there are other advantages in using Linux with iptables vs
CP besides
the price (Linux and iptables are free [either as a beer and as
speach]), the security
(Linux and iptables have the sources that I can inspect and also read if
I lack docs,
like in this case), the performances (iptables doesn't have limitations
like this one of
the connection table of CP)?

I manage a CP-FW-1 FP3 2 nodes with IPSO 3.6-FCS7 releng 1061
04.13.2003-022000 i386.
With the default parameters of the limit of 25000 connections, I get in
syslog many:

Jul 23 01:16:37 gnmccp001 [LOG_CRIT] kernel: FW-1: A new connection has
been detected but cannot be added to
Jul 23 01:16:37 gnmccp001 [LOG_CRIT] kernel: the connections table.
Jul 23 01:16:37 gnmccp001 [LOG_CRIT] kernel: The connection table may be
at full capacity.
Jul 23 01:16:37 gnmccp001 [LOG_CRIT] kernel: Please increase the
connection table limit.

At now I changed Policy > Global Properties > Statefull Inspection
reducing TCP session timeout from 7200 to 3600 and in
Gateway Cluster Properties - gnmccp > Capacity Optimization I increased
the concurrent connections from 25000 (default) to 30000; I seen that
the Memory pool size has grown from 10 MB to 12 MB and Maximum memory
pool size from 40 MB to 48MB.
The errors are disappeared from the syslog and then I checked the load
and the memory of the active node and it seems that's OK:

gnmccp001[admin]# uptime
 2:54PM  up 287 days, 10:23, 1 user, load averages: 0.61, 0.61, 0.57
gnmccp001[admin]# vmstat 10 10
 procs   memory         page                    disks   faults      cpu
 r b w   avm     fre    flt  re  pi  po  fr  sr w0 w1   in   sy  cs us
sy id
 0 0 0  406728   25948    2   0   0   0   8   3  0  2  159   23  22  3
27 70
 0 0 0  401336   25948    1   0   0   0   0   0  0  0 1237  321  16  0
1 98
 0 0 0  397616   25948    1   0   0   0   0   0  0  1 1207  461  16  0
2 98
 1 0 0  401500   25948    1   0   0   0   1   0  0  0 1239  400  17  0
2 98
 0 0 0  401500   25948    1   0   0   0   0   0  0  0 1218  300  15  0
1 99
 0 0 0  397616   25948    1   0   0   0   0   0  0  0 1359  308  15  0
3 97
 0 0 0  403008   25940    1   0   0   0  10   0  0  0 1255 2526  19  0
3 97
 0 0 0  403008   25940    1   0   0   0   0   0  0  0 1243  354  16  0
2 98
 0 0 0  403008   25940    1   0   0   0   0   0  0  1 1266  430  16  0
2 98
 0 0 0  401500   25940    1   0   0   0   1   0  0  0 1311  455  18  0
2 97
gnmccp001[admin]# swapinfo
Device      1K-blocks     Used    Avail Capacity  Type
/dev/wd0b     1048576   172672   875840    16%    Interleaved

There are some other or better thing that I can do and read to
understand such trouble?

Best regards,

Andrea Ferraris

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