FW3_OPT("tcp_syncookies", bool, defaults, tcp_syncookies),
FW3_OPT("tcp_ecn", bool, defaults, tcp_ecn),
- FW3_OPT("tcp_westwood", bool, defaults, tcp_westwood),
FW3_OPT("tcp_window_scaling", bool, defaults, tcp_window_scaling),
FW3_OPT("accept_redirects", bool, defaults, accept_redirects),
}
static void
-reset_policy(enum fw3_table table)
+set_default(const char *name, bool set)
+{
+ FILE *f;
+ char path[sizeof("/proc/sys/net/ipv4/tcp_window_scaling\0")];
+
+ snprintf(path, sizeof(path), "/proc/sys/net/ipv4/tcp_%s", name);
+
+ info(" * Set tcp_%s to %s", name, set ? "on" : "off", name);
+
+ if (!(f = fopen(path, "w")))
+ {
+ info(" ! Unable to write value: %s", strerror(errno));
+ return;
+ }
+
+ fprintf(f, "%u\n", set);
+ fclose(f);
+}
+
+void
+fw3_set_defaults(struct fw3_state *state)
+{
+ info("Setting sysctl values");
+
+ set_default("ecn", state->defaults.tcp_ecn);
+ set_default("syncookies", state->defaults.tcp_syncookies);
+ set_default("window_scaling", state->defaults.tcp_window_scaling);
+}
+
+static void
+reset_policy(enum fw3_table table, enum fw3_target policy)
{
if (table != FW3_TABLE_FILTER)
return;
- fw3_pr(":INPUT ACCEPT [0:0]\n");
- fw3_pr(":OUTPUT ACCEPT [0:0]\n");
- fw3_pr(":FORWARD ACCEPT [0:0]\n");
+ fw3_pr(":INPUT %s [0:0]\n", fw3_flag_names[policy]);
+ fw3_pr(":OUTPUT %s [0:0]\n", fw3_flag_names[policy]);
+ fw3_pr(":FORWARD %s [0:0]\n", fw3_flag_names[policy]);
}
void
fw3_flush_rules(enum fw3_table table, enum fw3_family family,
- bool pass2, struct fw3_state *state)
+ bool pass2, struct fw3_state *state, enum fw3_target policy)
{
struct fw3_defaults *d = &state->running_defaults;
uint16_t mask = ~0;
if (!pass2)
{
- reset_policy(table);
+ reset_policy(table, policy);
print_chains(table, family, "-D %s\n", d->flags & mask,
toplevel_rules, ARRAY_SIZE(toplevel_rules));
void
fw3_flush_all(enum fw3_table table)
{
- reset_policy(table);
+ reset_policy(table, FW3_TARGET_ACCEPT);
fw3_pr("-F\n");
fw3_pr("-X\n");