E.3 System V Release 4

E.3 System V Release 4

The TCP/IP configuration of SVR4 is similar to the previous two systems, but fewer options are available. In the file /etc/conf/pack.d/ip/space.c two constants can be defined, and the kernel must then be rebuilt and rebooted.

IPFORWARDING

The value of this constant initializes the kernel variable ipforwarding. If 0 (default), IP datagrams are not forwarded. If 1, forwarding is always enabled.

IPSENDREDIRECTS

The value of this constant initializes the kernel variable ipsendredirects. If 1 (default), the host will send ICMP redirects when forwarding IP datagrams. If 0, ICMP redirects are not sent.

Many of the variables that we've described in the previous two sections are defined in the kernel, but one must patch the kernel to modify them. For example, there is a variable named tcp_keepidle with a value of 14400.



TCP.IP Illustrated, Volume 1. The Protocols
TCP/IP Illustrated, Vol. 1: The Protocols (Addison-Wesley Professional Computing Series)
ISBN: 0201633469
EAN: 2147483647
Year: 1993
Pages: 378

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