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> You can see this problem if you run out of masq ports.  When the problem
> occurs, login to the masq box and rung "ipchains -M -L -n".  If I'm
> right, you will see a huge connection table, filled with masqueraded
> connections.  You should be able to identify the source (i.e. which
> masq'd client and which protocol [port] is being used).

David,

I haven't been able to repeat the outage, but the connection table looks
something like the following.  (Not sure why I couldn't display it
before.)  How many ports would be in use before running out of ports?

Does it cause a problem when ports hang around after they are no longer in
use?  For example the last 3 in this list hung around for a couple of
hours.  If so, what should I do about them?

[baker@localhost baker]$ /sbin/ipchains -M -L -n
IP masquerading entries
prot expire   source               destination          ports
UDP  00:03.42 192.168.0.30         168.253.48.19        1115 (61247) -> 53
TCP  117:39.16 192.168.0.30        207.87.13.16         1117 (61249) -> 80
TCP  117:31.57 192.168.0.30        207.87.13.16         1119 (61251) -> 80
TCP  117:36.89 192.168.0.30        207.87.13.16         1118 (61250) -> 80
ICMP 00:58.32 192.168.0.20         204.146.81.99        512 (61258) -> 8
ICMP 00:44.75 192.168.0.20         209.68.147.66        512 (61256) -> 8
UDP  02:07.40 192.168.0.20         168.253.48.19        1122 (61254) -> 53
UDP  02:21.39 192.168.0.20         168.253.48.19        1123 (61255) -> 53
UDP  01:31.83 192.168.0.20         192.168.0.255        137 (61252) -> 137
UDP  01:33.03 192.168.0.20         168.253.48.19        1120 (61253) -> 53
UDP  02:34.64 192.168.0.20         168.253.48.19        1124 (61257) -> 53
TCP  05:08.04 192.168.0.10         207.87.13.16         1085 (61147) -> 80
TCP  05:08.14 192.168.0.10         207.87.13.16         1087 (61149) -> 80
TCP  05:08.10 192.168.0.10         207.87.13.16         1086 (61148) -> 80

  Alan Baker

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