diff options
Diffstat (limited to 'extensions')
-rw-r--r-- | extensions/libipt_DNAT.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/extensions/libipt_DNAT.c b/extensions/libipt_DNAT.c index d8efa586..96a6e6b5 100644 --- a/extensions/libipt_DNAT.c +++ b/extensions/libipt_DNAT.c @@ -65,7 +65,7 @@ static struct ipt_entry_target * parse_to(char *arg, int portok, struct ipt_natinfo *info) { struct ip_nat_range range; - char *colon, *dash; + char *colon, *dash, *error; struct in_addr *ip; memset(&range, 0, sizeof(range)); @@ -85,6 +85,11 @@ parse_to(char *arg, int portok, struct ipt_natinfo *info) exit_error(PARAMETER_PROBLEM, "Port `%s' not valid\n", colon+1); + error = strchr(colon+1, ':'); + if (error) + exit_error(PARAMETER_PROBLEM, + "Invalid port:port syntax - use dash\n"); + dash = strchr(colon, '-'); if (!dash) { range.min.tcp.port |