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-rw-r--r--extensions/libipt_DNAT.c4
-rw-r--r--extensions/libipt_SNAT.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/extensions/libipt_DNAT.c b/extensions/libipt_DNAT.c
index 94d04e8e..9e4f5253 100644
--- a/extensions/libipt_DNAT.c
+++ b/extensions/libipt_DNAT.c
@@ -73,7 +73,7 @@ parse_to(char *arg, int portok, struct ipt_natinfo *info)
range.flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
port = atoi(colon+1);
- if (port == 0 || port > 65535)
+ if (port <= 0 || port > 65535)
exit_error(PARAMETER_PROBLEM,
"Port `%s' not valid\n", colon+1);
@@ -91,7 +91,7 @@ parse_to(char *arg, int portok, struct ipt_natinfo *info)
int maxport;
maxport = atoi(dash + 1);
- if (maxport == 0 || maxport > 65535)
+ if (maxport <= 0 || maxport > 65535)
exit_error(PARAMETER_PROBLEM,
"Port `%s' not valid\n", dash+1);
if (maxport < port)
diff --git a/extensions/libipt_SNAT.c b/extensions/libipt_SNAT.c
index 7510f6e7..a893a47d 100644
--- a/extensions/libipt_SNAT.c
+++ b/extensions/libipt_SNAT.c
@@ -73,7 +73,7 @@ parse_to(char *arg, int portok, struct ipt_natinfo *info)
range.flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
port = atoi(colon+1);
- if (port == 0 || port > 65535)
+ if (port <= 0 || port > 65535)
exit_error(PARAMETER_PROBLEM,
"Port `%s' not valid\n", colon+1);
@@ -91,7 +91,7 @@ parse_to(char *arg, int portok, struct ipt_natinfo *info)
int maxport;
maxport = atoi(dash + 1);
- if (maxport == 0 || maxport > 65535)
+ if (maxport <= 0 || maxport > 65535)
exit_error(PARAMETER_PROBLEM,
"Port `%s' not valid\n", dash+1);
if (maxport < port)